Feat/ambient sounds (#678)

* initial support for coaching mode in conference

* wip

* wip

* add support for answer verb

* wip

* wip

* wip

* wip

* wip

* updates to rename option to dub

* wip

* wip

* wip

* update verb-specs

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* add option to boost audio signal in main channel

* wip

* wip

* wip

* wip

* wip

* wip

* for now, bypass use of streaming apis when generating tts audio for dub tracks

* add nested dub to dial

* wip

* add support for filler noise

* kill filler noise when gather killed

* wip

* wip

* while using sayOnTrack, we have to enclose the say command in double quotes

* disableTtsStreaming = false

* allow transcribe of b leg only on dial verb

* dub.say can either be text or object like say verb with text and synthesizer

* remove loop for sayOnTrack

* update speech-utils

* fixes for testing transcribe verb and support for dub and boostAudioSignal in lcc commands

* add dial.boostAudioSignal

* fix bug where session-level recognizer settings incorrectly overwrite verb-level settings

* update verb specs

* update dial to support array of dub verbs

* fix bug setting gain

* lint

* wip

* update speech-utils

* use new endpoint methods for mod_dub

---------

Co-authored-by: Dave Horton <daveh@beachdognet.com>

lib/tasks/config.js

@@ -1,9 +1,11 @@
 const Task = require('./task');
 const {TaskName, TaskPreconditions} = require('../utils/constants');
+const parseDecibels = require('../utils/parse-decibels');
 
 class TaskConfig extends Task {
   constructor(logger, opts) {
     super(logger, opts);
+
     [
       'synthesizer',
       'recognizer',
@@ -11,7 +13,9 @@ class TaskConfig extends Task {
       'record',
       'listen',
       'transcribe',
-      'actionHookDelayAction'
+      'fillerNoise',
+      'actionHookDelayAction',
+      'boostAudioSignal'
     ].forEach((k) => this[k] = this.data[k] || {});
 
     if ('notifyEvents' in this.data) {
@@ -50,6 +54,7 @@ class TaskConfig extends Task {
       this.record?.action ||
       this.listen?.url ||
       this.data.amd ||
+      'boostAudioSignal' in this.data ||
       this.transcribe?.enable) ?
       TaskPreconditions.Endpoint :
       TaskPreconditions.None;
@@ -64,6 +69,8 @@ class TaskConfig extends Task {
   get hasRecording() { return Object.keys(this.record).length; }
   get hasListen() { return Object.keys(this.listen).length; }
   get hasTranscribe() { return Object.keys(this.transcribe).length; }
+  get hasDub() { return Object.keys(this.dub).length; }
+  get hasFillerNoise() { return Object.keys(this.fillerNoise).length; }
 
   get summary() {
     const phrase = [];
@@ -89,9 +96,11 @@ class TaskConfig extends Task {
     if (this.hasTranscribe) {
       phrase.push(this.transcribe.enable ? `transcribe ${this.transcribe.transcriptionHook}` : 'stop transcribe');
     }
+    if (this.hasFillerNoise) phrase.push(`fillerNoise ${this.fillerNoise.enable ? 'on' : 'off'}`);
     if (this.data.amd) phrase.push('enable amd');
     if (this.notifyEvents) phrase.push(`event notification ${this.notifyEvents ? 'on' : 'off'}`);
     if (this.onHoldMusic) phrase.push(`onHoldMusic: ${this.onHoldMusic}`);
+    if ('boostAudioSignal' in this.data) phrase.push(`setGain ${this.data.boostAudioSignal}`);
     return `${this.name}{${phrase.join(',')}}`;
   }
 
@@ -261,6 +270,24 @@ class TaskConfig extends Task {
     if (this.data.sipRequestWithinDialogHook) {
       cs.sipRequestWithinDialogHook = this.data.sipRequestWithinDialogHook;
     }
+
+    if ('boostAudioSignal' in this.data) {
+      const db = parseDecibels(this.data.boostAudioSignal);
+      this.logger.info(`Config: boosting audio signal by ${db} dB`);
+      const args = [ep.uuid, 'setGain', db];
+      ep.api('uuid_dub', args).catch((err) => {
+        this.logger.error(err, 'Error boosting audio signal');
+      });
+    }
+
+    if (this.hasFillerNoise) {
+      const {enable, ...opts} = this.fillerNoise;
+      this.logger.info({fillerNoise: this.fillerNoise}, 'Config: fillerNoise');
+      if (!enable) cs.disableFillerNoise();
+      else {
+        cs.enableFillerNoise(opts);
+      }
+    }
   }
 
   async kill(cs) {