I would want to remove it as I made a voice activated system to give commands to my phone while in costume inside a huge suit of armor. The phone then proceeds to say pre-recorded catchphrases through a speaker. Beeping before and after a command is recognized ruins the experience completely.
Since we have no way of removing the beep, for the reasons you stated, I proceeded to make the voice activation whistle based, using the Peak Analyser. 2 whistles do one thing, 3 whistles do another and 4 whistles enables voice recognition, for situations where I don't mind a beep, so I can change modes.
Not ideal, but limitations force one to be resourceful. Thanks Ashley :)