Audio input and output

[smartmirrorcse]

Please only submit reproducible issues.

If you're not sure if it's a real bug or if it's just you, please open a topic on the forum: https://forum.magicmirror.builders/category/15/bug-hunt
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[smartmirrorcse]

Hi . I am almost done with my Smart mirror project but I have issue with the audio input and output.
I'am using ras pi 3 onboard 3.5mm jack for audio output and usb microphone as audio in.
both are working individually absolutely fine but when I record something using usb microphone I am unable to get the output on the 3.5 mm microphones.
so I would really appreciate some help as soon as possible.I have a demonstration of the project within few days.

[sdetweil]

sorry, don't understand...

 I am unable to get the output on the 3.5 mm **microphones**

do you mean speakers?

if you use

arecord somefile.wav 

to record from the usb mic
then

aplay somefile.wav
could play to the output device (called default)..  

do you get system sounds from the analog device port? 

note the cable matters and powered speakers
https://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model-b-3-5mm-audiovideo-jack/

and look at raspi-config
https://raspberrypi.stackexchange.com/questions/61298/force-sound-over-3-5mm-jack-and-video-over-hdmi/61304#61304

[smartmirrorcse]

By 3.5mm i mean earphones which can be plugged on to 3.5mm port of ras pi 3.
Here's my .asoundrc file :-
cm.!default{
type asym
playback.pcm{
type hw
card 0
}
capture.pcm{
type plug
slave.pcm "hw:1, 0"
}
}

ctl.!default{
type hw
card 0
}
The command for audio input through usb microphone is :-
1.For recording
pi@raspberrypi:~ $ arecord --format=S16_LE --duration=5 --rate=16000 --file-type=raw out.raw
2.For playing the recorded data
pi@raspberrypi:~ $ aplay --format=S16_LE --rate=16000 out.raw

so now my issue is when I play the recorded data there is no output in earphones which is connected to 3.5 mm jack of ras pi 3.
But when I play youtube in pi I am able to get the sound output in earphones.

This when I record:-
pi@raspberrypi:~ $ arecord --format=S16_LE --duration=5 --rate=16000 --file-type=raw out.raw
Recording raw data 'out.raw' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono

This is when I play:-
pi@raspberrypi:~ $ aplay --format=S16_LE --rate=16000 out.raw
Playing raw data 'out.raw' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
It says playing but no output what so ever.

[sdetweil]

do aplay -l (lowercase L) to list the output devices.. make sure your .asoundrc file is right

should be able to specify device too on aplay commandline -D xx:yy

[smartmirrorcse]

sudo aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 7/7
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0

sudo arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

would you please eloborate the solution.

[sdetweil]

see this topic.. links to PI config
https://forum.magicmirror.builders/topic/10285/no-sound-from-my-rpi-3-b?page=1

[smartmirrorcse]

Hi could I get your email please.
Because nothing is working out for me.

[smartmirrorcse]

HI I have started over with new Os.
pi@raspberrypi:~/MagicMirror/modules/MMM-Hotword $ npm install
npm WARN deprecated [email protected]: This module moved to @hapi/hawk. Please make sure to switch over as this distribution is no longer supported and may contain bugs and critical security issues.
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This module moved to @hapi/sntp. Please make sure to switch over as this distribution is no longer supported and may contain bugs and critical security issues.

[email protected] install /home/pi/MagicMirror/modules/MMM-Hotword/node_modules/snowboy
node-pre-gyp install --fallback-to-build

[snowboy] Success: "/home/pi/MagicMirror/modules/MMM-Hotword/node_modules/snowboy/lib/node/binding/Release/node-v57-linux-arm/snowboy.node" is installed via remote
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN [email protected] No repository field.

added 216 packages from 133 contributors and audited 565 packages in 213.194s
found 11 vulnerabilities (8 moderate, 3 high)
run npm audit fix to fix them, or npm audit for details

Is this ok can I proceed.

[sdetweil]

come find me on discord and I will give you my email there..

as for hotword, it depends, if u start MagicMirror does it work or fail?

[smartmirrorcse]

I am not familiar with discord.
well I had a other query as well .
pi@raspberrypi:~/MagicMirror/modules/MMM-AssistantMk2 $ ./node_modules/.bin/electron-rebuild
⠧ Building module: grpc, Completed: 0

This build is taking quite long.

[sdetweil]

Yes. One took 30 minutes for me

[smartmirrorcse]

so should I wait for it to complete.

[sdetweil]

Yes

[MichMich]

Please refer to http://forum.magicmirror.builders for support and troubleshooting.

I'm closing this issue for now. If you feel this issue should remain open, please let me know.