Turn off touchtone/dtmf sounds when manually dialing in the app

I found this while trying to Google how to do this -- has this feature been added yet? I would like to see an option to turn down the volume for just the dialpad tone and/or make it a less aggressive noise, or at the very least be able to turn it off altogether -- it really starts to be aggravating having to move my headphone off my ear to avoid hearing the loud, sharp noise it makes every time I want to dial a number.

I would agree and it is needed