Volume

[RegencySoftware]

Is there anyway to just the volume of just the text to speech so that it works independent of other sounds that are being play (such as during an MP3 playing)

[mhoennig]

Your issue is now over a year old, but I have the same problem. Looking at the source, the fix looks pretty easy, but I have never built a Cordova plugin - and no iOS nor any experience, not even to mention Windows Phone.

For Android in TTS.java (line 192 in current HEAD), this code:

HashMap<String, String> ttsParams = new HashMap<String, String>();
ttsParams.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, callbackContext.getCallbackId());

Needed to be extended by copying the 'volume' parameter (KEY_PARAM_VOLUME). For iOS it should be around where 'rate' is set in CDVTTS.m line 55. The API has also a volume parameter, according to the docs.

[mhoennig]

I've forked the repo and applied my idea from above: see commit in my cordova-plugin-tts fork It works! For 50% loundness you need to set volumen to about 0.2 by my perception. No idea how that will be on iOS or WP, maybe a good solution needs to apply some shaping of the factor to make it behave as similar as possible in a Cordova app.

To apply it to your project, you can use: cordova plugin add https://github.com/mhoennig/cordova-plugin-tts

Anybody out there who could do it for iOS and WP?