feat: add support for MP3 bitrates and hint boost (#363)

packages/google-cloud-speech/protos/google/cloud/speech/v1p1beta1/cloud_speech.proto

@@ -200,6 +200,11 @@ message RecognitionConfig {
     // is replaced with a single byte containing the block length. Only Speex
     // wideband is supported. `sample_rate_hertz` must be 16000.
     SPEEX_WITH_HEADER_BYTE = 7;
+
+    // MP3 audio. Support all standard MP3 bitrates (which range from 32-320
+    // kbps). When using this encoding, `sample_rate_hertz` can be optionally
+    // unset if not known.
+    MP3 = 8;
   }
 
   // Encoding of audio data sent in all `RecognitionAudio` messages.
@@ -511,6 +516,16 @@ message SpeechContext {
   // to add additional words to the vocabulary of the recognizer. See
   // [usage limits](/speech-to-text/quotas#content).
   repeated string phrases = 1;
+
+  // Hint Boost. Positive value will increase the probability that a specific
+  // phrase will be recognized over other similar sounding phrases. The higher
+  // the boost, the higher the chance of false positive recognition as well.
+  // Negative boost values would correspond to anti-biasing. Anti-biasing is not
+  // enabled, so negative boost will simply be ignored. Though `boost` can
+  // accept a wide range of positive values, most use cases are best served with
+  // values between 0 and 20. We recommend using a binary search approach to
+  // finding the optimal value for your use case.
+  float boost = 4;
 }
 
 // Contains audio data in the encoding specified in the `RecognitionConfig`.

packages/google-cloud-speech/src/v1p1beta1/doc/google/cloud/speech/v1p1beta1/doc_cloud_speech.js

@@ -398,7 +398,14 @@ const RecognitionConfig = {
      * is replaced with a single byte containing the block length. Only Speex
      * wideband is supported. `sample_rate_hertz` must be 16000.
      */
-    SPEEX_WITH_HEADER_BYTE: 7
+    SPEEX_WITH_HEADER_BYTE: 7,
+
+    /**
+     * MP3 audio. Support all standard MP3 bitrates (which range from 32-320
+     * kbps). When using this encoding, `sample_rate_hertz` can be optionally
+     * unset if not known.
+     */
+    MP3: 8
   }
 };
 
@@ -631,6 +638,16 @@ const RecognitionMetadata = {
  *   to add additional words to the vocabulary of the recognizer. See
  *   [usage limits](https://cloud.google.com/speech-to-text/quotas#content).
  *
+ * @property {number} boost
+ *   Hint Boost. Positive value will increase the probability that a specific
+ *   phrase will be recognized over other similar sounding phrases. The higher
+ *   the boost, the higher the chance of false positive recognition as well.
+ *   Negative boost values would correspond to anti-biasing. Anti-biasing is not
+ *   enabled, so negative boost will simply be ignored. Though `boost` can
+ *   accept a wide range of positive values, most use cases are best served with
+ *   values between 0 and 20. We recommend using a binary search approach to
+ *   finding the optimal value for your use case.
+ *
  * @typedef SpeechContext
  * @memberof google.cloud.speech.v1p1beta1
  * @see [google.cloud.speech.v1p1beta1.SpeechContext definition in proto format]{@link https://github.com/googleapis/googleapis/blob/master/google/cloud/speech/v1p1beta1/cloud_speech.proto}

packages/google-cloud-speech/synth.metadata

@@ -1,5 +1,5 @@
 {
-  "updateTime": "2019-05-21T11:25:25.116275Z",
+  "updateTime": "2019-05-23T11:22:43.094942Z",
   "sources": [
     {
       "generator": {
@@ -12,8 +12,8 @@
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "32a10f69e2c9ce15bba13ab1ff928bacebb25160",
-        "internalRef": "249058354"
+        "sha": "f792303254ea54442d03ca470ffb38930bda7806",
+        "internalRef": "249516437"
       }
     },
     {