Implement review changes 1

react/features/base/config/reducer.js

     }
 };
 
+/**
+ * Options that enable stereo and HD audio if the {@code enableHdAudio} config option is set.
+ */
+const hdAudioOptions = {
+    disableAP: true,
+    enableNoAudioDetection: false,
+    enableNoisyMicDetection: false,
+    enableTalkWhileMuted: false,
+    opusMaxAverageBitrate: 510000,
+    stereo: true
+};
+
 ReducerRegistry.register('features/base/config', (state = _getInitialState(), action) => {
     switch (action.type) {
     case UPDATE_CONFIG:
     const newState = _.merge(
         {},
         config,
+        config.enableHdAudio ? hdAudioOptions : {},
         { error: undefined },
 
         // The config of _getInitialState() is meant to override the config

react/features/base/lib-jitsi-meet/actions.js

     return (dispatch: Dispatch<any>, getState: Function): void => {
         const state = getState();
         const config = state['features/base/config'];
-        const { enableHdAudio } = config;
 
         if (!config) {
             throw new Error('Cannot init lib-jitsi-meet without config');
         }
 
-        if (enableHdAudio) {
-            Object.assign(config, {
-                ...config,
-                channelCount: 2,
-                disableAP: true,
-                enableNoAudioDetection: false,
-                enableNoisyMicDetection: false,
-                enableTalkWhileMuted: false,
-                opusMaxAverageBitrate: 510000,
-                stereo: true
-            });
-        }
-
         dispatch({ type: LIB_WILL_INIT });
 
         try {