Signal Generator is a FREE Droid audio signal generator ... or could be used as a portable Tinnitus Tone Generator!
Description Easy to use audio signal generator that creates white- and pink noise as well as sine waves.Test the bandwidth of your phone's speaker (or your ears...), create true uncorrelated noise.
Make sure to check out our Spectral View, RTA and other apps in the Market.
Use as a Tinnitus Tone Generator:
If you suffer from Tinnitus ( ringing in the ears ), you may find Signal Generator can significantly help with your symptoms. Signal Generator cannot cure your tinnitus, however it can be extremely beneficial as a realtime masking solution.
https://play.google.com/store/apps/details?id=radonsoft.net.signalgen&hl=en