Phase-Out
Download

Phase-Out Ranking & Summary

Phase-Out Tags

Phase-Out Description

Tinnitus, or ringing in the ears, affects 32% of the general population. An effective treatment for tinnitus using destructive interference has been developed and proven effective.A sound wave can be cancelled by meeting a reciprocal wave (180° opposite) of the same pitch and volume. Using this law of physics, Columbia and Bell Labs scientists, Dr. Daniel Choy and Ivan Kaminow, created a successful treatment for tinnitus, or ringing in the ears. It is in use in the U.S., Europe and Asia and is called the Padden-Choy procedure. The procedure uses a phase-shifted signal that fades away tinnitus symptoms. A patient determines the pitch (frequency) and volume (loudness) of his/her tinnitus. This wave is sequentially shifted out of phase and played back through headphones for 30 minutes.FDA approval was granted in July, 2003.

Phase-Out Related Software