Patent ID: 6259935
Filing Date: 2001-07-10
Classification: G08B,H04M,H04R

Abstract:
An electro-mechanical-acoustic transducing device, comprising:An electro-mechanical-acoustic transducer having at least one resonance frequency;a signal supplying unit for receiving an input electric signal having a predetermined frequency band including the at least one resonance frequency and for supplying the input electric signal to the electro-mechanical-acoustic transducer, the electro-mechanical-acoustic transducer converting an electric signal having the at least one resonance frequency included in the predetermined frequency band into at least one of vibration and sound; anda frequency detector for detecting the at least one resonance frequency of the electro-mechanical-acoustic transducer and for generating a feedback electric signal having the detected at least one resonance frequency,wherein the signal supplying unit further receives the feedback electric signal from the frequency detector and supplies the input electric signal and the feedback electric signal to the electro-mechanical-acoustic transducer.