support noise isolation

lib/utils/background-task-manager.js

@@ -49,6 +49,9 @@ class BackgroundTaskManager extends Emitter {
       case 'ttsStream':
         task = await this._initTtsStream(opts);
         break;
+      case 'noiseIsolation':
+        task = await this._initNoiseIsolation(opts);
+        break;
       default:
         break;
     }
@@ -194,6 +197,25 @@ class BackgroundTaskManager extends Emitter {
     return task;
   }
 
+  // Initiate Noise Isolation
+  async _initNoiseIsolation(opts) {
+    let task;
+    try {
+      const t = normalizeJambones(this.logger, [opts]);
+      task = makeTask(this.logger, t[0]);
+      const resources = await this.cs._evaluatePreconditions(task);
+      const {span, ctx} = this.rootSpan.startChildSpan(`background-noiseIsolation:${task.summary}`);
+      task.span = span;
+      task.ctx = ctx;
+      task.exec(this.cs, resources)
+        .then(this._taskCompleted.bind(this, 'noiseIsolation', task))
+        .catch(this._taskError.bind(this, 'noiseIsolation', task));
+    } catch (err) {
+      this.logger.info(err, 'BackgroundTaskManager:_initNoiseIsolation - Error creating noiseIsolation task');
+    }
+    return task;
+  }
+
   _taskCompleted(type, task) {
     this.logger.debug({type, task}, `BackgroundTaskManager:_taskCompleted: task completed, sticky: ${task.sticky}`);
     task.removeAllListeners();

lib/utils/constants.json

@@ -31,7 +31,8 @@
     "SayLegacy": "say:legacy",
     "Stream": "stream",
     "Tag": "tag",
-    "Transcribe": "transcribe"
+    "Transcribe": "transcribe",
+    "NoiseIsolation": "noiseIsolation"
   },
   "AllowedSipRecVerbs": ["answer", "config", "gather", "transcribe", "listen", "tag", "hangup", "sip:decline"],
   "AllowedConfirmSessionVerbs": ["config", "gather", "plays", "say", "tag"],