From 9ac02db9b1900f8c91d08d339b16dc9cadd20b06 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mikrut?= <mikrutrafal@protonmail.com>
Date: Mon, 13 Sep 2021 20:58:11 +0200
Subject: [PATCH] Initialize variabes in servers/audio

---
 core/math/audio_frame.h                       |  2 +-
 servers/audio/audio_driver_dummy.cpp          |  7 --
 servers/audio/audio_driver_dummy.h            | 16 ++--
 servers/audio/audio_filter_sw.cpp             | 13 +---
 servers/audio/audio_filter_sw.h               | 21 +++--
 servers/audio/audio_rb_resampler.cpp          | 11 ---
 servers/audio/audio_rb_resampler.h            | 20 ++---
 servers/audio/audio_stream.cpp                |  4 +-
 servers/audio/audio_stream.h                  | 12 +--
 .../audio/effects/audio_effect_amplify.cpp    |  4 +-
 servers/audio/effects/audio_effect_amplify.h  |  4 +-
 servers/audio/effects/audio_effect_chorus.cpp |  4 -
 servers/audio/effects/audio_effect_chorus.h   | 36 ++++-----
 .../audio/effects/audio_effect_compressor.cpp |  9 +--
 .../audio/effects/audio_effect_compressor.h   | 16 ++--
 servers/audio/effects/audio_effect_delay.cpp  | 19 +----
 servers/audio/effects/audio_effect_delay.h    | 32 ++++----
 .../audio/effects/audio_effect_distortion.cpp |  8 +-
 .../audio/effects/audio_effect_distortion.h   | 12 +--
 servers/audio/effects/audio_effect_filter.cpp |  4 -
 servers/audio/effects/audio_effect_filter.h   | 10 +--
 .../audio/effects/audio_effect_limiter.cpp    |  7 +-
 servers/audio/effects/audio_effect_limiter.h  | 10 +--
 servers/audio/effects/audio_effect_panner.cpp |  4 +-
 servers/audio/effects/audio_effect_panner.h   |  2 +-
 servers/audio/effects/audio_effect_phaser.cpp |  8 +-
 servers/audio/effects/audio_effect_phaser.h   | 19 ++---
 .../effects/audio_effect_pitch_shift.cpp      |  9 +--
 .../audio/effects/audio_effect_pitch_shift.h  | 19 ++---
 servers/audio/effects/audio_effect_record.cpp |  5 +-
 servers/audio/effects/audio_effect_record.h   | 13 ++--
 servers/audio/effects/audio_effect_reverb.cpp | 11 +--
 servers/audio/effects/audio_effect_reverb.h   | 16 ++--
 .../audio_effect_spectrum_analyzer.cpp        |  6 +-
 .../effects/audio_effect_spectrum_analyzer.h  | 18 ++---
 .../effects/audio_effect_stereo_enhance.cpp   |  6 +-
 .../effects/audio_effect_stereo_enhance.h     | 14 ++--
 .../audio/effects/audio_stream_generator.cpp  | 12 +--
 .../audio/effects/audio_stream_generator.h    | 12 +--
 servers/audio/effects/eq.cpp                  | 12 +--
 servers/audio/effects/eq.h                    | 12 +--
 servers/audio/effects/reverb.cpp              | 11 ---
 servers/audio/effects/reverb.h                | 34 ++++----
 servers/audio_server.cpp                      | 11 +--
 servers/audio_server.h                        | 78 ++++++++-----------
 45 files changed, 222 insertions(+), 391 deletions(-)

diff --git a/core/math/audio_frame.h b/core/math/audio_frame.h
index a5616b8d798f..6cee54259d33 100644
--- a/core/math/audio_frame.h
+++ b/core/math/audio_frame.h
@@ -52,7 +52,7 @@ static const float AUDIO_MIN_PEAK_DB = -200.0f; // linear2db(AUDIO_PEAK_OFFSET)
 
 struct AudioFrame {
 	//left and right samples
-	float l, r;
+	float l = 0, r = 0;
 
 	_ALWAYS_INLINE_ const float &operator[](int idx) const { return idx == 0 ? l : r; }
 	_ALWAYS_INLINE_ float &operator[](int idx) { return idx == 0 ? l : r; }
diff --git a/servers/audio/audio_driver_dummy.cpp b/servers/audio/audio_driver_dummy.cpp
index a28dcb101574..e33fb7c862a6 100644
--- a/servers/audio/audio_driver_dummy.cpp
+++ b/servers/audio/audio_driver_dummy.cpp
@@ -34,14 +34,7 @@
 #include "core/os/os.h"
 
 Error AudioDriverDummy::init() {
-	active = false;
-	thread_exited = false;
-	exit_thread = false;
-	samples_in = nullptr;
-
 	mix_rate = GLOBAL_GET("audio/driver/mix_rate");
-	speaker_mode = SPEAKER_MODE_STEREO;
-	channels = 2;
 
 	int latency = GLOBAL_GET("audio/driver/output_latency");
 	buffer_frames = closest_power_of_2(latency * mix_rate / 1000);
diff --git a/servers/audio/audio_driver_dummy.h b/servers/audio/audio_driver_dummy.h
index 7d84e7ffc87b..c7607c981b87 100644
--- a/servers/audio/audio_driver_dummy.h
+++ b/servers/audio/audio_driver_dummy.h
@@ -40,19 +40,19 @@ class AudioDriverDummy : public AudioDriver {
 	Thread thread;
 	Mutex mutex;
 
-	int32_t *samples_in;
+	int32_t *samples_in = nullptr;
 
 	static void thread_func(void *p_udata);
 
-	unsigned int buffer_frames;
-	unsigned int mix_rate;
-	SpeakerMode speaker_mode;
+	unsigned int buffer_frames = 0;
+	unsigned int mix_rate = 0;
+	SpeakerMode speaker_mode = SPEAKER_MODE_STEREO;
 
-	int channels;
+	int channels = 2;
 
-	bool active;
-	bool thread_exited;
-	mutable bool exit_thread;
+	bool active = false;
+	bool thread_exited = false;
+	mutable bool exit_thread = false;
 
 public:
 	const char *get_name() const {
diff --git a/servers/audio/audio_filter_sw.cpp b/servers/audio/audio_filter_sw.cpp
index bcfa4c4c3725..2d69071c876c 100644
--- a/servers/audio/audio_filter_sw.cpp
+++ b/servers/audio/audio_filter_sw.cpp
@@ -219,18 +219,9 @@ float AudioFilterSW::get_response(float p_freq, Coeffs *p_coeffs) {
 	return H;
 }
 
-AudioFilterSW::AudioFilterSW() {
-	sampling_rate = 44100;
-	resonance = 0.5;
-	cutoff = 5000;
-	gain = 1.0;
-	mode = LOWPASS;
-	stages = 1;
-}
+AudioFilterSW::AudioFilterSW() {}
 
-AudioFilterSW::Processor::Processor() {
-	set_filter(nullptr);
-}
+AudioFilterSW::Processor::Processor() {}
 
 void AudioFilterSW::Processor::set_filter(AudioFilterSW *p_filter, bool p_clear_history) {
 	if (p_clear_history) {
diff --git a/servers/audio/audio_filter_sw.h b/servers/audio/audio_filter_sw.h
index 540d6368e30d..3617d1ceeba6 100644
--- a/servers/audio/audio_filter_sw.h
+++ b/servers/audio/audio_filter_sw.h
@@ -36,11 +36,10 @@
 class AudioFilterSW {
 public:
 	struct Coeffs {
-		float a1, a2;
-		float b0, b1, b2;
+		float a1 = 0.0, a2 = 0.0;
+		float b0 = 0.0, b1 = 0.0, b2 = 0.0;
 
 		//bool operator==(const Coeffs &p_rv) { return (FLOATS_EQ(a1,p_rv.a1) && FLOATS_EQ(a2,p_rv.a2) && FLOATS_EQ(b1,p_rv.b1) && FLOATS_EQ(b2,p_rv.b2) && FLOATS_EQ(b0,p_rv.b0) ); }
-		Coeffs() { a1 = a2 = b0 = b1 = b2 = 0.0; }
 	};
 
 	enum Mode {
@@ -57,9 +56,9 @@ class AudioFilterSW {
 
 	class Processor { // simple filter processor
 
-		AudioFilterSW *filter;
+		AudioFilterSW *filter = nullptr;
 		Coeffs coeffs;
-		float ha1, ha2, hb1, hb2; //history
+		float ha1 = 0.0, ha2 = 0.0, hb1 = 0.0, hb2 = 0.0; //history
 		Coeffs incr_coeffs;
 
 	public:
@@ -73,12 +72,12 @@ class AudioFilterSW {
 	};
 
 private:
-	float cutoff;
-	float resonance;
-	float gain;
-	float sampling_rate;
-	int stages;
-	Mode mode;
+	float cutoff = 5000.0;
+	float resonance = 0.5;
+	float gain = 1.0;
+	float sampling_rate = 44100.0;
+	int stages = 1;
+	Mode mode = LOWPASS;
 
 public:
 	float get_response(float p_freq, Coeffs *p_coeffs);
diff --git a/servers/audio/audio_rb_resampler.cpp b/servers/audio/audio_rb_resampler.cpp
index 3c8a1469cdc0..a3e16fa1cdef 100644
--- a/servers/audio/audio_rb_resampler.cpp
+++ b/servers/audio/audio_rb_resampler.cpp
@@ -211,19 +211,8 @@ void AudioRBResampler::clear() {
 }
 
 AudioRBResampler::AudioRBResampler() {
-	rb = nullptr;
-	offset = 0;
-	read_buf = nullptr;
 	rb_read_pos.set(0);
 	rb_write_pos.set(0);
-
-	rb_bits = 0;
-	rb_len = 0;
-	rb_mask = 0;
-	read_buff_len = 0;
-	channels = 0;
-	src_mix_rate = 0;
-	target_mix_rate = 0;
 }
 
 AudioRBResampler::~AudioRBResampler() {
diff --git a/servers/audio/audio_rb_resampler.h b/servers/audio/audio_rb_resampler.h
index c0f981704b70..d248ed351031 100644
--- a/servers/audio/audio_rb_resampler.h
+++ b/servers/audio/audio_rb_resampler.h
@@ -37,26 +37,26 @@
 #include "servers/audio_server.h"
 
 struct AudioRBResampler {
-	uint32_t rb_bits;
-	uint32_t rb_len;
-	uint32_t rb_mask;
-	uint32_t read_buff_len;
-	uint32_t channels;
-	uint32_t src_mix_rate;
-	uint32_t target_mix_rate;
+	uint32_t rb_bits = 0;
+	uint32_t rb_len = 0;
+	uint32_t rb_mask = 0;
+	uint32_t read_buff_len = 0;
+	uint32_t channels = 0;
+	uint32_t src_mix_rate = 0;
+	uint32_t target_mix_rate = 0;
 
 	SafeNumeric<int> rb_read_pos;
 	SafeNumeric<int> rb_write_pos;
 
-	int32_t offset; //contains the fractional remainder of the resampler
+	int32_t offset = 0; //contains the fractional remainder of the resampler
 	enum {
 		MIX_FRAC_BITS = 13,
 		MIX_FRAC_LEN = (1 << MIX_FRAC_BITS),
 		MIX_FRAC_MASK = MIX_FRAC_LEN - 1,
 	};
 
-	float *read_buf;
-	float *rb;
+	float *read_buf = nullptr;
+	float *rb = nullptr;
 
 	template <int C>
 	uint32_t _resample(AudioFrame *p_dest, int p_todo, int32_t p_increment);
diff --git a/servers/audio/audio_stream.cpp b/servers/audio/audio_stream.cpp
index c098a97906a3..f27826084f19 100644
--- a/servers/audio/audio_stream.cpp
+++ b/servers/audio/audio_stream.cpp
@@ -421,9 +421,7 @@ void AudioStreamRandomPitch::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "random_pitch", PROPERTY_HINT_RANGE, "1,16,0.01"), "set_random_pitch", "get_random_pitch");
 }
 
-AudioStreamRandomPitch::AudioStreamRandomPitch() {
-	random_pitch = 1.1;
-}
+AudioStreamRandomPitch::AudioStreamRandomPitch() {}
 
 void AudioStreamPlaybackRandomPitch::start(float p_from_pos) {
 	playing = playback;
diff --git a/servers/audio/audio_stream.h b/servers/audio/audio_stream.h
index 12d4343f5cf8..ee51aa91ffb3 100644
--- a/servers/audio/audio_stream.h
+++ b/servers/audio/audio_stream.h
@@ -78,7 +78,7 @@ class AudioStreamPlaybackResampled : public AudioStreamPlayback {
 
 	AudioFrame internal_buffer[INTERNAL_BUFFER_LEN + CUBIC_INTERP_HISTORY];
 	unsigned int internal_buffer_end = -1;
-	uint64_t mix_offset;
+	uint64_t mix_offset = 0;
 
 protected:
 	void _begin_resample();
@@ -89,7 +89,7 @@ class AudioStreamPlaybackResampled : public AudioStreamPlayback {
 public:
 	virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
 
-	AudioStreamPlaybackResampled() { mix_offset = 0; }
+	AudioStreamPlaybackResampled() {}
 };
 
 class AudioStream : public Resource {
@@ -140,8 +140,8 @@ class AudioStreamPlaybackMicrophone : public AudioStreamPlaybackResampled {
 	GDCLASS(AudioStreamPlaybackMicrophone, AudioStreamPlaybackResampled);
 	friend class AudioStreamMicrophone;
 
-	bool active;
-	unsigned int input_ofs;
+	bool active = false;
+	unsigned int input_ofs = 0;
 
 	Ref<AudioStreamMicrophone> microphone;
 
@@ -175,7 +175,7 @@ class AudioStreamRandomPitch : public AudioStream {
 
 	Set<AudioStreamPlaybackRandomPitch *> playbacks;
 	Ref<AudioStream> audio_stream;
-	float random_pitch;
+	float random_pitch = 1.1;
 
 protected:
 	static void _bind_methods();
@@ -203,7 +203,7 @@ class AudioStreamPlaybackRandomPitch : public AudioStreamPlayback {
 	Ref<AudioStreamRandomPitch> random_pitch;
 	Ref<AudioStreamPlayback> playback;
 	Ref<AudioStreamPlayback> playing;
-	float pitch_scale;
+	float pitch_scale = 1.0;
 
 public:
 	virtual void start(float p_from_pos = 0.0) override;
diff --git a/servers/audio/effects/audio_effect_amplify.cpp b/servers/audio/effects/audio_effect_amplify.cpp
index 79788d334b75..1086c090bd8e 100644
--- a/servers/audio/effects/audio_effect_amplify.cpp
+++ b/servers/audio/effects/audio_effect_amplify.cpp
@@ -67,6 +67,4 @@ void AudioEffectAmplify::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volume_db", PROPERTY_HINT_RANGE, "-80,24,0.01"), "set_volume_db", "get_volume_db");
 }
 
-AudioEffectAmplify::AudioEffectAmplify() {
-	volume_db = 0;
-}
+AudioEffectAmplify::AudioEffectAmplify() {}
diff --git a/servers/audio/effects/audio_effect_amplify.h b/servers/audio/effects/audio_effect_amplify.h
index 9d3facc23035..48fced07593c 100644
--- a/servers/audio/effects/audio_effect_amplify.h
+++ b/servers/audio/effects/audio_effect_amplify.h
@@ -40,7 +40,7 @@ class AudioEffectAmplifyInstance : public AudioEffectInstance {
 	friend class AudioEffectAmplify;
 	Ref<AudioEffectAmplify> base;
 
-	float mix_volume_db;
+	float mix_volume_db = 0.0;
 
 public:
 	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
@@ -50,7 +50,7 @@ class AudioEffectAmplify : public AudioEffect {
 	GDCLASS(AudioEffectAmplify, AudioEffect);
 
 	friend class AudioEffectAmplifyInstance;
-	float volume_db;
+	float volume_db = 0.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_chorus.cpp b/servers/audio/effects/audio_effect_chorus.cpp
index 9af3ed30cc18..b9db3cdf52a8 100644
--- a/servers/audio/effects/audio_effect_chorus.cpp
+++ b/servers/audio/effects/audio_effect_chorus.cpp
@@ -343,7 +343,6 @@ void AudioEffectChorus::_bind_methods() {
 }
 
 AudioEffectChorus::AudioEffectChorus() {
-	voice_count = 2;
 	voice[0].delay = 15;
 	voice[1].delay = 20;
 	voice[0].rate = 0.8;
@@ -354,7 +353,4 @@ AudioEffectChorus::AudioEffectChorus() {
 	voice[1].cutoff = 8000;
 	voice[0].pan = -0.5;
 	voice[1].pan = 0.5;
-
-	wet = 0.5;
-	dry = 1.0;
 }
diff --git a/servers/audio/effects/audio_effect_chorus.h b/servers/audio/effects/audio_effect_chorus.h
index f81bebb0ae59..a266797ce0b4 100644
--- a/servers/audio/effects/audio_effect_chorus.h
+++ b/servers/audio/effects/audio_effect_chorus.h
@@ -41,11 +41,11 @@ class AudioEffectChorusInstance : public AudioEffectInstance {
 	Ref<AudioEffectChorus> base;
 
 	Vector<AudioFrame> audio_buffer;
-	unsigned int buffer_pos;
-	unsigned int buffer_mask;
+	unsigned int buffer_pos = 0;
+	unsigned int buffer_mask = 0;
 
-	AudioFrame filter_h[4];
-	uint64_t cycles[4];
+	AudioFrame filter_h[4] = {};
+	uint64_t cycles[4] = {};
 
 	void _process_chunk(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count);
 
@@ -72,28 +72,18 @@ class AudioEffectChorus : public AudioEffect {
 
 private:
 	struct Voice {
-		float delay;
-		float rate;
-		float depth;
-		float level;
-		float cutoff;
-		float pan;
-
-		Voice() {
-			delay = 12.0;
-			rate = 1;
-			depth = 0;
-			level = 0;
-			cutoff = MS_CUTOFF_MAX;
-			pan = 0;
-		}
-
+		float delay = 12.0;
+		float rate = 1.0;
+		float depth = 0.0;
+		float level = 0.0;
+		float cutoff = MS_CUTOFF_MAX;
+		float pan = 0.0;
 	} voice[MAX_VOICES];
 
-	int voice_count;
+	int voice_count = 2;
 
-	float wet;
-	float dry;
+	float wet = 0.5;
+	float dry = 1.0;
 
 protected:
 	void _validate_property(PropertyInfo &property) const override;
diff --git a/servers/audio/effects/audio_effect_compressor.cpp b/servers/audio/effects/audio_effect_compressor.cpp
index cfa2ae6f7937..c2f928ec3356 100644
--- a/servers/audio/effects/audio_effect_compressor.cpp
+++ b/servers/audio/effects/audio_effect_compressor.cpp
@@ -227,11 +227,4 @@ void AudioEffectCompressor::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::STRING_NAME, "sidechain", PROPERTY_HINT_ENUM), "set_sidechain", "get_sidechain");
 }
 
-AudioEffectCompressor::AudioEffectCompressor() {
-	threshold = 0;
-	ratio = 4;
-	gain = 0;
-	attack_us = 20;
-	release_ms = 250;
-	mix = 1;
-}
+AudioEffectCompressor::AudioEffectCompressor() {}
diff --git a/servers/audio/effects/audio_effect_compressor.h b/servers/audio/effects/audio_effect_compressor.h
index dae4618a648f..26027989bbd8 100644
--- a/servers/audio/effects/audio_effect_compressor.h
+++ b/servers/audio/effects/audio_effect_compressor.h
@@ -40,8 +40,8 @@ class AudioEffectCompressorInstance : public AudioEffectInstance {
 	friend class AudioEffectCompressor;
 	Ref<AudioEffectCompressor> base;
 
-	float rundb, averatio, runratio, runmax, maxover, gr_meter;
-	int current_channel;
+	float rundb = 0.0, averatio = 0.0, runratio = 0.0, runmax = 0.0, maxover = 0.0, gr_meter = 0.0;
+	int current_channel = 0;
 
 public:
 	void set_current_channel(int p_channel) { current_channel = p_channel; }
@@ -52,12 +52,12 @@ class AudioEffectCompressor : public AudioEffect {
 	GDCLASS(AudioEffectCompressor, AudioEffect);
 
 	friend class AudioEffectCompressorInstance;
-	float threshold;
-	float ratio;
-	float gain;
-	float attack_us;
-	float release_ms;
-	float mix;
+	float threshold = 0.0;
+	float ratio = 4.0;
+	float gain = 0.0;
+	float attack_us = 20.0;
+	float release_ms = 250.0;
+	float mix = 1.0;
 	StringName sidechain;
 
 protected:
diff --git a/servers/audio/effects/audio_effect_delay.cpp b/servers/audio/effects/audio_effect_delay.cpp
index 07475e1ed402..4fa6804e58e1 100644
--- a/servers/audio/effects/audio_effect_delay.cpp
+++ b/servers/audio/effects/audio_effect_delay.cpp
@@ -305,21 +305,4 @@ void AudioEffectDelay::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "feedback/lowpass", PROPERTY_HINT_RANGE, "1,16000,1"), "set_feedback_lowpass", "get_feedback_lowpass");
 }
 
-AudioEffectDelay::AudioEffectDelay() {
-	tap_1_active = true;
-	tap_1_delay_ms = 250;
-	tap_1_level = -6;
-	tap_1_pan = 0.2;
-
-	tap_2_active = true;
-	tap_2_delay_ms = 500;
-	tap_2_level = -12;
-	tap_2_pan = -0.4;
-
-	feedback_active = false;
-	feedback_delay_ms = 340;
-	feedback_level = -6;
-	feedback_lowpass = 16000;
-
-	dry = 1.0;
-}
+AudioEffectDelay::AudioEffectDelay() {}
diff --git a/servers/audio/effects/audio_effect_delay.h b/servers/audio/effects/audio_effect_delay.h
index 50a2233e5fb3..6fc57b068f78 100644
--- a/servers/audio/effects/audio_effect_delay.h
+++ b/servers/audio/effects/audio_effect_delay.h
@@ -42,13 +42,13 @@ class AudioEffectDelayInstance : public AudioEffectInstance {
 
 	Vector<AudioFrame> ring_buffer;
 
-	unsigned int ring_buffer_pos;
-	unsigned int ring_buffer_mask;
+	unsigned int ring_buffer_pos = 0;
+	unsigned int ring_buffer_mask = 0;
 
 	/* feedback buffer */
 	Vector<AudioFrame> feedback_buffer;
 
-	unsigned int feedback_buffer_pos;
+	unsigned int feedback_buffer_pos = 0;
 
 	AudioFrame h;
 	void _process_chunk(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count);
@@ -66,22 +66,22 @@ class AudioEffectDelay : public AudioEffect {
 		MAX_TAPS = 2
 	};
 
-	float dry;
+	float dry = 1.0;
 
-	bool tap_1_active;
-	float tap_1_delay_ms;
-	float tap_1_level;
-	float tap_1_pan;
+	bool tap_1_active = true;
+	float tap_1_delay_ms = 250.0;
+	float tap_1_level = -6.0;
+	float tap_1_pan = 0.2;
 
-	bool tap_2_active;
-	float tap_2_delay_ms;
-	float tap_2_level;
-	float tap_2_pan;
+	bool tap_2_active = true;
+	float tap_2_delay_ms = 500.0;
+	float tap_2_level = -12.0;
+	float tap_2_pan = -0.4;
 
-	bool feedback_active;
-	float feedback_delay_ms;
-	float feedback_level;
-	float feedback_lowpass;
+	bool feedback_active = false;
+	float feedback_delay_ms = 340.0;
+	float feedback_level = -6.0;
+	float feedback_lowpass = 16000.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_distortion.cpp b/servers/audio/effects/audio_effect_distortion.cpp
index 188b7a330147..67c205ae99ed 100644
--- a/servers/audio/effects/audio_effect_distortion.cpp
+++ b/servers/audio/effects/audio_effect_distortion.cpp
@@ -172,10 +172,4 @@ void AudioEffectDistortion::_bind_methods() {
 	BIND_ENUM_CONSTANT(MODE_WAVESHAPE);
 }
 
-AudioEffectDistortion::AudioEffectDistortion() {
-	mode = MODE_CLIP;
-	pre_gain = 0;
-	post_gain = 0;
-	keep_hf_hz = 16000;
-	drive = 0;
-}
+AudioEffectDistortion::AudioEffectDistortion() {}
diff --git a/servers/audio/effects/audio_effect_distortion.h b/servers/audio/effects/audio_effect_distortion.h
index 3a762f8cf64d..b0829955a138 100644
--- a/servers/audio/effects/audio_effect_distortion.h
+++ b/servers/audio/effects/audio_effect_distortion.h
@@ -39,7 +39,7 @@ class AudioEffectDistortionInstance : public AudioEffectInstance {
 	GDCLASS(AudioEffectDistortionInstance, AudioEffectInstance);
 	friend class AudioEffectDistortion;
 	Ref<AudioEffectDistortion> base;
-	float h[2];
+	float h[2] = {};
 
 public:
 	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
@@ -58,11 +58,11 @@ class AudioEffectDistortion : public AudioEffect {
 	};
 
 	friend class AudioEffectDistortionInstance;
-	Mode mode;
-	float pre_gain;
-	float post_gain;
-	float keep_hf_hz;
-	float drive;
+	Mode mode = MODE_CLIP;
+	float pre_gain = 0.0;
+	float post_gain = 0.0;
+	float keep_hf_hz = 16000.0;
+	float drive = 0.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_filter.cpp b/servers/audio/effects/audio_effect_filter.cpp
index 1db8b1f1b5b1..9b88bb35631b 100644
--- a/servers/audio/effects/audio_effect_filter.cpp
+++ b/servers/audio/effects/audio_effect_filter.cpp
@@ -166,8 +166,4 @@ void AudioEffectFilter::_bind_methods() {
 
 AudioEffectFilter::AudioEffectFilter(AudioFilterSW::Mode p_mode) {
 	mode = p_mode;
-	cutoff = 2000;
-	resonance = 0.5;
-	gain = 1.0;
-	db = FILTER_6DB;
 }
diff --git a/servers/audio/effects/audio_effect_filter.h b/servers/audio/effects/audio_effect_filter.h
index 1fa3df1570ee..211143474158 100644
--- a/servers/audio/effects/audio_effect_filter.h
+++ b/servers/audio/effects/audio_effect_filter.h
@@ -66,11 +66,11 @@ class AudioEffectFilter : public AudioEffect {
 	};
 	friend class AudioEffectFilterInstance;
 
-	AudioFilterSW::Mode mode;
-	float cutoff;
-	float resonance;
-	float gain;
-	FilterDB db;
+	AudioFilterSW::Mode mode = AudioFilterSW::Mode::BANDLIMIT;
+	float cutoff = 2000.0;
+	float resonance = 0.5;
+	float gain = 1.0;
+	FilterDB db = FILTER_6DB;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_limiter.cpp b/servers/audio/effects/audio_effect_limiter.cpp
index 280411641bb0..4b7e2502e132 100644
--- a/servers/audio/effects/audio_effect_limiter.cpp
+++ b/servers/audio/effects/audio_effect_limiter.cpp
@@ -126,9 +126,4 @@ void AudioEffectLimiter::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "soft_clip_ratio", PROPERTY_HINT_RANGE, "3,20,0.1"), "set_soft_clip_ratio", "get_soft_clip_ratio");
 }
 
-AudioEffectLimiter::AudioEffectLimiter() {
-	threshold = 0;
-	ceiling = -0.1;
-	soft_clip = 2;
-	soft_clip_ratio = 10;
-}
+AudioEffectLimiter::AudioEffectLimiter() {}
diff --git a/servers/audio/effects/audio_effect_limiter.h b/servers/audio/effects/audio_effect_limiter.h
index d5def670a480..c230ad26e182 100644
--- a/servers/audio/effects/audio_effect_limiter.h
+++ b/servers/audio/effects/audio_effect_limiter.h
@@ -40,7 +40,7 @@ class AudioEffectLimiterInstance : public AudioEffectInstance {
 	friend class AudioEffectLimiter;
 	Ref<AudioEffectLimiter> base;
 
-	float mix_volume_db;
+	float mix_volume_db = 0.0;
 
 public:
 	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
@@ -50,10 +50,10 @@ class AudioEffectLimiter : public AudioEffect {
 	GDCLASS(AudioEffectLimiter, AudioEffect);
 
 	friend class AudioEffectLimiterInstance;
-	float threshold;
-	float ceiling;
-	float soft_clip;
-	float soft_clip_ratio;
+	float threshold = 0.0;
+	float ceiling = -0.1;
+	float soft_clip = 2.0;
+	float soft_clip_ratio = 10.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_panner.cpp b/servers/audio/effects/audio_effect_panner.cpp
index e2062609b9de..a88970f1d0d8 100644
--- a/servers/audio/effects/audio_effect_panner.cpp
+++ b/servers/audio/effects/audio_effect_panner.cpp
@@ -62,6 +62,4 @@ void AudioEffectPanner::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "pan", PROPERTY_HINT_RANGE, "-1,1,0.01"), "set_pan", "get_pan");
 }
 
-AudioEffectPanner::AudioEffectPanner() {
-	pan = 0;
-}
+AudioEffectPanner::AudioEffectPanner() {}
diff --git a/servers/audio/effects/audio_effect_panner.h b/servers/audio/effects/audio_effect_panner.h
index d75bcaeb955f..19ff869a8b9c 100644
--- a/servers/audio/effects/audio_effect_panner.h
+++ b/servers/audio/effects/audio_effect_panner.h
@@ -48,7 +48,7 @@ class AudioEffectPanner : public AudioEffect {
 	GDCLASS(AudioEffectPanner, AudioEffect);
 
 	friend class AudioEffectPannerInstance;
-	float pan;
+	float pan = 0.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_phaser.cpp b/servers/audio/effects/audio_effect_phaser.cpp
index c76692eed765..721e25d81e1e 100644
--- a/servers/audio/effects/audio_effect_phaser.cpp
+++ b/servers/audio/effects/audio_effect_phaser.cpp
@@ -151,10 +151,4 @@ void AudioEffectPhaser::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "depth", PROPERTY_HINT_RANGE, "0.1,4,0.1"), "set_depth", "get_depth");
 }
 
-AudioEffectPhaser::AudioEffectPhaser() {
-	range_min = 440;
-	range_max = 1600;
-	rate = 0.5;
-	feedback = 0.7;
-	depth = 1;
-}
+AudioEffectPhaser::AudioEffectPhaser() {}
diff --git a/servers/audio/effects/audio_effect_phaser.h b/servers/audio/effects/audio_effect_phaser.h
index 2a0ed6480585..4e93f64c8ebd 100644
--- a/servers/audio/effects/audio_effect_phaser.h
+++ b/servers/audio/effects/audio_effect_phaser.h
@@ -40,11 +40,11 @@ class AudioEffectPhaserInstance : public AudioEffectInstance {
 	friend class AudioEffectPhaser;
 	Ref<AudioEffectPhaser> base;
 
-	float phase;
+	float phase = 0.0;
 	AudioFrame h;
 
 	class AllpassDelay {
-		float a, h;
+		float a = 0.0, h = 0.0;
 
 	public:
 		_ALWAYS_INLINE_ void delay(float d) {
@@ -56,11 +56,6 @@ class AudioEffectPhaserInstance : public AudioEffectInstance {
 			h = y * a + s;
 			return y;
 		}
-
-		AllpassDelay() {
-			a = 0;
-			h = 0;
-		}
 	};
 
 	AllpassDelay allpass[2][6];
@@ -73,11 +68,11 @@ class AudioEffectPhaser : public AudioEffect {
 	GDCLASS(AudioEffectPhaser, AudioEffect);
 
 	friend class AudioEffectPhaserInstance;
-	float range_min;
-	float range_max;
-	float rate;
-	float feedback;
-	float depth;
+	float range_min = 440.0;
+	float range_max = 1600.0;
+	float rate = 0.5;
+	float feedback = 0.7;
+	float depth = 1.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_pitch_shift.cpp b/servers/audio/effects/audio_effect_pitch_shift.cpp
index d6c396e0a573..2b32a8fa161d 100644
--- a/servers/audio/effects/audio_effect_pitch_shift.cpp
+++ b/servers/audio/effects/audio_effect_pitch_shift.cpp
@@ -357,11 +357,4 @@ void AudioEffectPitchShift::_bind_methods() {
 	BIND_ENUM_CONSTANT(FFT_SIZE_MAX);
 }
 
-AudioEffectPitchShift::AudioEffectPitchShift() {
-	pitch_scale = 1.0;
-	oversampling = 4;
-	fft_size = FFT_SIZE_2048;
-	wet = 0.0;
-	dry = 0.0;
-	filter = false;
-}
+AudioEffectPitchShift::AudioEffectPitchShift() {}
diff --git a/servers/audio/effects/audio_effect_pitch_shift.h b/servers/audio/effects/audio_effect_pitch_shift.h
index 3ed096cd944e..aa6df928e8aa 100644
--- a/servers/audio/effects/audio_effect_pitch_shift.h
+++ b/servers/audio/effects/audio_effect_pitch_shift.h
@@ -48,7 +48,7 @@ class SMBPitchShift {
 	float gAnaMagn[MAX_FRAME_LENGTH];
 	float gSynFreq[MAX_FRAME_LENGTH];
 	float gSynMagn[MAX_FRAME_LENGTH];
-	long gRover;
+	long gRover = 0;
 
 	void smbFft(float *fftBuffer, long fftFrameSize, long sign);
 
@@ -56,7 +56,6 @@ class SMBPitchShift {
 	void PitchShift(float pitchShift, long numSampsToProcess, long fftFrameSize, long osamp, float sampleRate, float *indata, float *outdata, int stride);
 
 	SMBPitchShift() {
-		gRover = 0;
 		memset(gInFIFO, 0, MAX_FRAME_LENGTH * sizeof(float));
 		memset(gOutFIFO, 0, MAX_FRAME_LENGTH * sizeof(float));
 		memset(gFFTworksp, 0, 2 * MAX_FRAME_LENGTH * sizeof(float));
@@ -65,6 +64,8 @@ class SMBPitchShift {
 		memset(gOutputAccum, 0, 2 * MAX_FRAME_LENGTH * sizeof(float));
 		memset(gAnaFreq, 0, MAX_FRAME_LENGTH * sizeof(float));
 		memset(gAnaMagn, 0, MAX_FRAME_LENGTH * sizeof(float));
+		memset(gSynFreq, 0, MAX_FRAME_LENGTH * sizeof(float));
+		memset(gSynMagn, 0, MAX_FRAME_LENGTH * sizeof(float));
 	}
 };
 
@@ -75,7 +76,7 @@ class AudioEffectPitchShiftInstance : public AudioEffectInstance {
 	friend class AudioEffectPitchShift;
 	Ref<AudioEffectPitchShift> base;
 
-	int fft_size;
+	int fft_size = 0;
 	SMBPitchShift shift_l;
 	SMBPitchShift shift_r;
 
@@ -98,12 +99,12 @@ class AudioEffectPitchShift : public AudioEffect {
 		FFT_SIZE_MAX
 	};
 
-	float pitch_scale;
-	int oversampling;
-	FFTSize fft_size;
-	float wet;
-	float dry;
-	bool filter;
+	float pitch_scale = 1.0;
+	int oversampling = 4;
+	FFTSize fft_size = FFT_SIZE_2048;
+	float wet = 0.0;
+	float dry = 0.0;
+	bool filter = false;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_record.cpp b/servers/audio/effects/audio_effect_record.cpp
index f71679d30f73..1aec39d2097f 100644
--- a/servers/audio/effects/audio_effect_record.cpp
+++ b/servers/audio/effects/audio_effect_record.cpp
@@ -291,7 +291,4 @@ void AudioEffectRecord::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "format", PROPERTY_HINT_ENUM, "8-Bit,16-Bit,IMA-ADPCM"), "set_format", "get_format");
 }
 
-AudioEffectRecord::AudioEffectRecord() {
-	format = AudioStreamSample::FORMAT_16_BITS;
-	recording_active = false;
-}
+AudioEffectRecord::AudioEffectRecord() {}
diff --git a/servers/audio/effects/audio_effect_record.h b/servers/audio/effects/audio_effect_record.h
index 1a89821f8005..8e6cc1938e25 100644
--- a/servers/audio/effects/audio_effect_record.h
+++ b/servers/audio/effects/audio_effect_record.h
@@ -47,16 +47,16 @@ class AudioEffectRecordInstance : public AudioEffectInstance {
 	friend class AudioEffectRecord;
 	Ref<AudioEffectRecord> base;
 
-	bool is_recording;
+	bool is_recording = false;
 	Thread io_thread;
 	bool thread_active = false;
 
 	Vector<AudioFrame> ring_buffer;
 	Vector<float> recording_data;
 
-	unsigned int ring_buffer_pos;
-	unsigned int ring_buffer_mask;
-	unsigned int ring_buffer_read_pos;
+	unsigned int ring_buffer_pos = 0;
+	unsigned int ring_buffer_mask = 0;
+	unsigned int ring_buffer_read_pos = 0;
 
 	void _io_thread_process();
 	void _io_store_buffer();
@@ -84,10 +84,9 @@ class AudioEffectRecord : public AudioEffect {
 		IO_BUFFER_SIZE_MS = 1500
 	};
 
-	bool recording_active;
+	bool recording_active = false;
 	Ref<AudioEffectRecordInstance> current_instance;
-
-	AudioStreamSample::Format format;
+	AudioStreamSample::Format format = AudioStreamSample::FORMAT_16_BITS;
 
 	void ensure_thread_stopped();
 
diff --git a/servers/audio/effects/audio_effect_reverb.cpp b/servers/audio/effects/audio_effect_reverb.cpp
index 819f9067739c..daaffacb39e6 100644
--- a/servers/audio/effects/audio_effect_reverb.cpp
+++ b/servers/audio/effects/audio_effect_reverb.cpp
@@ -187,13 +187,4 @@ void AudioEffectReverb::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "wet", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_wet", "get_wet");
 }
 
-AudioEffectReverb::AudioEffectReverb() {
-	predelay = 150;
-	predelay_fb = 0.4;
-	hpf = 0;
-	room_size = 0.8;
-	damping = 0.5;
-	spread = 1.0;
-	dry = 1.0;
-	wet = 0.5;
-}
+AudioEffectReverb::AudioEffectReverb() {}
diff --git a/servers/audio/effects/audio_effect_reverb.h b/servers/audio/effects/audio_effect_reverb.h
index d01d1120bd0e..b5963f6f0707 100644
--- a/servers/audio/effects/audio_effect_reverb.h
+++ b/servers/audio/effects/audio_effect_reverb.h
@@ -58,14 +58,14 @@ class AudioEffectReverb : public AudioEffect {
 
 	friend class AudioEffectReverbInstance;
 
-	float predelay;
-	float predelay_fb;
-	float hpf;
-	float room_size;
-	float damping;
-	float spread;
-	float dry;
-	float wet;
+	float predelay = 150.0;
+	float predelay_fb = 0.4;
+	float hpf = 0.0;
+	float room_size = 0.8;
+	float damping = 0.5;
+	float spread = 1.0;
+	float dry = 1.0;
+	float wet = 0.5;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_spectrum_analyzer.cpp b/servers/audio/effects/audio_effect_spectrum_analyzer.cpp
index 6f9e7ac67da4..8fc4b1351c95 100644
--- a/servers/audio/effects/audio_effect_spectrum_analyzer.cpp
+++ b/servers/audio/effects/audio_effect_spectrum_analyzer.cpp
@@ -276,8 +276,4 @@ void AudioEffectSpectrumAnalyzer::_bind_methods() {
 	BIND_ENUM_CONSTANT(FFT_SIZE_MAX);
 }
 
-AudioEffectSpectrumAnalyzer::AudioEffectSpectrumAnalyzer() {
-	buffer_length = 2;
-	tapback_pos = 0.01;
-	fft_size = FFT_SIZE_1024;
-}
+AudioEffectSpectrumAnalyzer::AudioEffectSpectrumAnalyzer() {}
diff --git a/servers/audio/effects/audio_effect_spectrum_analyzer.h b/servers/audio/effects/audio_effect_spectrum_analyzer.h
index 3c5ae4a5e8ed..e3bb64ec78c6 100644
--- a/servers/audio/effects/audio_effect_spectrum_analyzer.h
+++ b/servers/audio/effects/audio_effect_spectrum_analyzer.h
@@ -50,12 +50,12 @@ class AudioEffectSpectrumAnalyzerInstance : public AudioEffectInstance {
 
 	Vector<Vector<AudioFrame>> fft_history;
 	Vector<float> temporal_fft;
-	int temporal_fft_pos;
-	int fft_size;
-	int fft_count;
-	int fft_pos;
-	float mix_rate;
-	uint64_t last_fft_time;
+	int temporal_fft_pos = 0;
+	int fft_size = 0;
+	int fft_count = 0;
+	int fft_pos = 0;
+	float mix_rate = 0.0;
+	uint64_t last_fft_time = 0;
 
 protected:
 	static void _bind_methods();
@@ -82,9 +82,9 @@ class AudioEffectSpectrumAnalyzer : public AudioEffect {
 
 public:
 	friend class AudioEffectSpectrumAnalyzerInstance;
-	float buffer_length;
-	float tapback_pos;
-	FFTSize fft_size;
+	float buffer_length = 2.0;
+	float tapback_pos = 0.01;
+	FFTSize fft_size = FFT_SIZE_1024;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_effect_stereo_enhance.cpp b/servers/audio/effects/audio_effect_stereo_enhance.cpp
index 3a016b06b84d..b02f366bb3a2 100644
--- a/servers/audio/effects/audio_effect_stereo_enhance.cpp
+++ b/servers/audio/effects/audio_effect_stereo_enhance.cpp
@@ -141,8 +141,4 @@ void AudioEffectStereoEnhance::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "surround", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_surround", "get_surround");
 }
 
-AudioEffectStereoEnhance::AudioEffectStereoEnhance() {
-	pan_pullout = 1;
-	time_pullout = 0;
-	surround = 0;
-}
+AudioEffectStereoEnhance::AudioEffectStereoEnhance() {}
diff --git a/servers/audio/effects/audio_effect_stereo_enhance.h b/servers/audio/effects/audio_effect_stereo_enhance.h
index e0f9d79a9488..7e24a7e36dc0 100644
--- a/servers/audio/effects/audio_effect_stereo_enhance.h
+++ b/servers/audio/effects/audio_effect_stereo_enhance.h
@@ -44,9 +44,9 @@ class AudioEffectStereoEnhanceInstance : public AudioEffectInstance {
 		MAX_DELAY_MS = 50
 	};
 
-	float *delay_ringbuff;
-	unsigned int ringbuff_pos;
-	unsigned int ringbuff_mask;
+	float *delay_ringbuff = nullptr;
+	unsigned int ringbuff_pos = 0;
+	unsigned int ringbuff_mask = 0;
 
 public:
 	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
@@ -58,11 +58,11 @@ class AudioEffectStereoEnhance : public AudioEffect {
 	GDCLASS(AudioEffectStereoEnhance, AudioEffect);
 
 	friend class AudioEffectStereoEnhanceInstance;
-	float volume_db;
+	float volume_db = 0.0;
 
-	float pan_pullout;
-	float time_pullout;
-	float surround;
+	float pan_pullout = 1.0;
+	float time_pullout = 0.0;
+	float surround = 0.0;
 
 protected:
 	static void _bind_methods();
diff --git a/servers/audio/effects/audio_stream_generator.cpp b/servers/audio/effects/audio_stream_generator.cpp
index 447acf53a499..58686a42a736 100644
--- a/servers/audio/effects/audio_stream_generator.cpp
+++ b/servers/audio/effects/audio_stream_generator.cpp
@@ -79,10 +79,7 @@ void AudioStreamGenerator::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "buffer_length", PROPERTY_HINT_RANGE, "0.01,10,0.01"), "set_buffer_length", "get_buffer_length");
 }
 
-AudioStreamGenerator::AudioStreamGenerator() {
-	mix_rate = 44100;
-	buffer_len = 0.5;
-}
+AudioStreamGenerator::AudioStreamGenerator() {}
 
 ////////////////
 
@@ -205,9 +202,4 @@ void AudioStreamGeneratorPlayback::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("clear_buffer"), &AudioStreamGeneratorPlayback::clear_buffer);
 }
 
-AudioStreamGeneratorPlayback::AudioStreamGeneratorPlayback() {
-	generator = nullptr;
-	skips = 0;
-	active = false;
-	mixed = 0;
-}
+AudioStreamGeneratorPlayback::AudioStreamGeneratorPlayback() {}
diff --git a/servers/audio/effects/audio_stream_generator.h b/servers/audio/effects/audio_stream_generator.h
index 918589f6d0b3..8ba60ca6e6b4 100644
--- a/servers/audio/effects/audio_stream_generator.h
+++ b/servers/audio/effects/audio_stream_generator.h
@@ -37,8 +37,8 @@
 class AudioStreamGenerator : public AudioStream {
 	GDCLASS(AudioStreamGenerator, AudioStream);
 
-	float mix_rate;
-	float buffer_len;
+	float mix_rate = 44100.0;
+	float buffer_len = 0.5;
 
 protected:
 	static void _bind_methods();
@@ -62,10 +62,10 @@ class AudioStreamGeneratorPlayback : public AudioStreamPlaybackResampled {
 	GDCLASS(AudioStreamGeneratorPlayback, AudioStreamPlaybackResampled);
 	friend class AudioStreamGenerator;
 	RingBuffer<AudioFrame> buffer;
-	int skips;
-	bool active;
-	float mixed;
-	AudioStreamGenerator *generator;
+	int skips = 0;
+	bool active = false;
+	float mixed = 0.0;
+	AudioStreamGenerator *generator = nullptr;
 
 protected:
 	virtual int _mix_internal(AudioFrame *p_buffer, int p_frames) override;
diff --git a/servers/audio/effects/eq.cpp b/servers/audio/effects/eq.cpp
index e0c3eb6d3aa8..a125759eb82c 100644
--- a/servers/audio/effects/eq.cpp
+++ b/servers/audio/effects/eq.cpp
@@ -63,10 +63,7 @@ static int solve_quadratic(double a, double b, double c, double *r1, double *r2)
 	}
 }
 
-EQ::BandProcess::BandProcess() {
-	c1 = c2 = c3 = history.a1 = history.a2 = history.a3 = 0;
-	history.b1 = history.b2 = history.b3 = 0;
-}
+EQ::BandProcess::BandProcess() {}
 
 void EQ::recalculate_band_coefficients() {
 #define BAND_LOG(m_f) (log((m_f)) / log(2.))
@@ -195,9 +192,6 @@ EQ::BandProcess EQ::get_band_processor(int p_band) const {
 	return band_proc;
 }
 
-EQ::EQ() {
-	mix_rate = 44100;
-}
+EQ::EQ() {}
 
-EQ::~EQ() {
-}
+EQ::~EQ() {}
diff --git a/servers/audio/effects/eq.h b/servers/audio/effects/eq.h
index afd5bf53345b..8e601ddd9943 100644
--- a/servers/audio/effects/eq.h
+++ b/servers/audio/effects/eq.h
@@ -52,10 +52,10 @@ class EQ {
 
 	class BandProcess {
 		friend class EQ;
-		float c1, c2, c3;
+		float c1 = 0.0, c2 = 0.0, c3 = 0.0;
 		struct History {
-			float a1, a2, a3;
-			float b1, b2, b3;
+			float a1 = 0.0, a2 = 0.0, a3 = 0.0;
+			float b1 = 0.0, b2 = 0.0, b3 = 0.0;
 
 		} history;
 
@@ -67,13 +67,13 @@ class EQ {
 
 private:
 	struct Band {
-		float freq;
-		float c1, c2, c3;
+		float freq = 0.0;
+		float c1 = 0.0, c2 = 0.0, c3 = 0.0;
 	};
 
 	Vector<Band> band;
 
-	float mix_rate;
+	float mix_rate = 44100.0;
 
 	void recalculate_band_coefficients();
 
diff --git a/servers/audio/effects/reverb.cpp b/servers/audio/effects/reverb.cpp
index 1d97de52059c..4259e923e9e9 100644
--- a/servers/audio/effects/reverb.cpp
+++ b/servers/audio/effects/reverb.cpp
@@ -320,17 +320,6 @@ void Reverb::clear_buffers() {
 }
 
 Reverb::Reverb() {
-	params.room_size = 0.8;
-	params.damp = 0.5;
-	params.dry = 1.0;
-	params.wet = 0.0;
-	params.mix_rate = 44100;
-	params.extra_spread_base = 0;
-	params.extra_spread = 1.0;
-	params.predelay = 150;
-	params.predelay_fb = 0.4;
-	params.hpf = 0;
-
 	input_buffer = memnew_arr(float, INPUT_BUFFER_MAX_SIZE);
 
 	configure_buffers();
diff --git a/servers/audio/effects/reverb.h b/servers/audio/effects/reverb.h
index e7ce55098d1a..529b69664ddd 100644
--- a/servers/audio/effects/reverb.h
+++ b/servers/audio/effects/reverb.h
@@ -58,9 +58,9 @@ class Reverb {
 	struct Comb {
 		int size = 0;
 		float *buffer = nullptr;
-		float feedback = 0;
-		float damp = 0; //lowpass
-		float damp_h = 0; //history
+		float feedback = 0.0;
+		float damp = 0.0; //lowpass
+		float damp_h = 0.0; //history
 		int pos = 0;
 		int extra_spread_frames = 0;
 
@@ -77,24 +77,24 @@ class Reverb {
 
 	Comb comb[MAX_COMBS];
 	AllPass allpass[MAX_ALLPASS];
-	float *input_buffer;
+	float *input_buffer = nullptr;
 	float *echo_buffer = nullptr;
-	int echo_buffer_size;
-	int echo_buffer_pos;
+	int echo_buffer_size = 0;
+	int echo_buffer_pos = 0;
 
-	float hpf_h1, hpf_h2 = 0;
+	float hpf_h1 = 0.0, hpf_h2 = 0.0;
 
 	struct Parameters {
-		float room_size;
-		float damp;
-		float wet;
-		float dry;
-		float mix_rate;
-		float extra_spread_base;
-		float extra_spread;
-		float predelay;
-		float predelay_fb;
-		float hpf;
+		float room_size = 0.8;
+		float damp = 0.5;
+		float wet = 0.0;
+		float dry = 1.0;
+		float mix_rate = 44100.0;
+		float extra_spread_base = 0.0;
+		float extra_spread = 1.0;
+		float predelay = 150.0;
+		float predelay_fb = 0.4;
+		float hpf = 0.0;
 	} params;
 
 	void configure_buffers();
diff --git a/servers/audio_server.cpp b/servers/audio_server.cpp
index 758ce766c39f..941bd151b720 100644
--- a/servers/audio_server.cpp
+++ b/servers/audio_server.cpp
@@ -164,16 +164,7 @@ Array AudioDriver::capture_get_device_list() {
 	return list;
 }
 
-AudioDriver::AudioDriver() {
-	_last_mix_time = 0;
-	_last_mix_frames = 0;
-	input_position = 0;
-	input_size = 0;
-
-#ifdef DEBUG_ENABLED
-	prof_time = 0;
-#endif
-}
+AudioDriver::AudioDriver() {}
 
 AudioDriverDummy AudioDriverManager::dummy_driver;
 AudioDriver *AudioDriverManager::drivers[MAX_DRIVERS] = {
diff --git a/servers/audio_server.h b/servers/audio_server.h
index a60d4ae4c4bd..030543ac085c 100644
--- a/servers/audio_server.h
+++ b/servers/audio_server.h
@@ -48,18 +48,18 @@ class AudioStreamPlayback;
 
 class AudioDriver {
 	static AudioDriver *singleton;
-	uint64_t _last_mix_time;
-	uint64_t _last_mix_frames;
+	uint64_t _last_mix_time = 0;
+	uint64_t _last_mix_frames = 0;
 
 #ifdef DEBUG_ENABLED
-	uint64_t prof_ticks;
-	uint64_t prof_time;
+	uint64_t prof_ticks = 0;
+	uint64_t prof_time = 0;
 #endif
 
 protected:
 	Vector<int32_t> input_buffer;
-	unsigned int input_position;
-	unsigned int input_size;
+	unsigned int input_position = 0;
+	unsigned int input_size = 0;
 
 	void audio_server_process(int p_frames, int32_t *p_buffer, bool p_update_mix_time = true);
 	void update_mix_time(int p_frames);
@@ -169,44 +169,41 @@ class AudioServer : public Object {
 	typedef void (*AudioCallback)(void *p_userdata);
 
 private:
-	uint64_t mix_time;
-	int mix_size;
+	uint64_t mix_time = 0;
+	int mix_size = 0;
 
-	uint32_t buffer_size;
-	uint64_t mix_count;
-	uint64_t mix_frames;
+	uint32_t buffer_size = 0;
+	uint64_t mix_count = 0;
+	uint64_t mix_frames = 0;
 #ifdef DEBUG_ENABLED
-	uint64_t prof_time;
+	uint64_t prof_time = 0;
 #endif
 
-	float channel_disable_threshold_db;
-	uint32_t channel_disable_frames;
+	float channel_disable_threshold_db = 0.0;
+	uint32_t channel_disable_frames = 0;
 
-	int channel_count;
-	int to_mix;
+	int channel_count = 0;
+	int to_mix = 0;
 
-	float playback_speed_scale;
+	float playback_speed_scale = 1.0;
 
 	struct Bus {
 		StringName name;
-		bool solo;
-		bool mute;
-		bool bypass;
+		bool solo = false;
+		bool mute = false;
+		bool bypass = false;
 
-		bool soloed;
+		bool soloed = false;
 
 		//Each channel is a stereo pair.
 		struct Channel {
-			bool used;
-			bool active;
+			bool used = false;
+			bool active = false;
 			AudioFrame peak_volume;
 			Vector<AudioFrame> buffer;
 			Vector<Ref<AudioEffectInstance>> effect_instances;
-			uint64_t last_mix_with_audio;
+			uint64_t last_mix_with_audio = 0;
 			Channel() {
-				last_mix_with_audio = 0;
-				used = false;
-				active = false;
 				peak_volume = AudioFrame(AUDIO_MIN_PEAK_DB, AUDIO_MIN_PEAK_DB);
 			}
 		};
@@ -215,16 +212,16 @@ class AudioServer : public Object {
 
 		struct Effect {
 			Ref<AudioEffect> effect;
-			bool enabled;
+			bool enabled = false;
 #ifdef DEBUG_ENABLED
-			uint64_t prof_time;
+			uint64_t prof_time = 0;
 #endif
 		};
 
 		Vector<Effect> effects;
-		float volume_db;
+		float volume_db = 0.0;
 		StringName send;
-		int index_cache;
+		int index_cache = 0;
 	};
 
 	struct AudioStreamPlaybackBusDetails {
@@ -284,7 +281,7 @@ class AudioServer : public Object {
 
 	struct CallbackItem {
 		AudioCallback callback;
-		void *userdata;
+		void *userdata = nullptr;
 	};
 
 	SafeList<CallbackItem *> update_callback_list;
@@ -442,26 +439,19 @@ class AudioBusLayout : public Resource {
 
 	struct Bus {
 		StringName name;
-		bool solo;
-		bool mute;
-		bool bypass;
+		bool solo = false;
+		bool mute = false;
+		bool bypass = false;
 
 		struct Effect {
 			Ref<AudioEffect> effect;
-			bool enabled;
+			bool enabled = false;
 		};
 
 		Vector<Effect> effects;
 
-		float volume_db;
+		float volume_db = 0.0;
 		StringName send;
-
-		Bus() {
-			solo = false;
-			mute = false;
-			bypass = false;
-			volume_db = 0;
-		}
 	};
 
 	Vector<Bus> buses;