This would be a form-fitting device located across your chest that would vibrate to give your singing voice a lovely vibrato sound.
This would benefit people who have "flat" singing voices.
A sensor attached to your arms could control the rate and amplitude of vibration. Raising the arms would increase the speed, lowering the arms would reduce the effect. This natural-looking control scheme would allow the Vibro Chest to remain stealthy. Maybe it could be turned on or off by bowing.-- AntiQuark, Mar 13 2007 Can't you just use your electric toothbrush? I mean, it's right next to you!-- DrCurry, Mar 14 2007 random, halfbakery