How do I disable the google voice typing/voice search 'ding' sound?

Whenever I open google voice typing, it plays a rising ding sound, then a falling ding sound when it stops. This is very annoying to me. I have a rooted stock S5 on Lollipop. I searched for the sound file but couldn't locate it, it may be wrapped up in the apk file. Is there a way to stop this irritating sound? If I install the Xposed Framework, will that help? Edit: Someone has suggested turning the media volume down to zero. This will work, but is not appropriate for me, as I am using the language learning app duolingo while I am using voice typing. So I need the app to send out audio via the media channel, simultaneously with using voice typing. Coming at it from another angle, I have asked if there is an alternative application which meets my requirements. **edit** **Using app settings 1.15, you can mute voice typing by muting the Google app in Marshmallow (and maybe above). However, voice typing now mutes other audio ( regardless of its configuration on app settings) so I asked a question about it here** https://android.stackexchange.com/questions/193881/how-do-i-stop-voice-typing-from-muting-pausing-other-playing-media