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New Acoustic Feedback System
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English
Abstract
The acoustic feedback (AFB) system is to detect the acoustic signals radiated from a loudspeaker with a microphone, and feed them back to the previous stage of the amplifier. However, there were many problems to put it into practical use.
A new AFB system has been developed, where the above problems are solved by setting the microphone at the optimum position and adopting a new feedback method. This was achieved by reviewing the loudspeaker performance from a new point of view. Thus, a wide-range feedback and the improvement in the speaker response have been obtained. Also, the problems of oscillation have been solved.
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Authors
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Citation
Ohki, S., Konno, F., and Ishihara, S., "New Acoustic Feedback System," SAE Technical Paper 950184, 1995, https://doi.org/10.4271/950184.Also In
References
- Sakamoto, N. Speaker and Speaker System Nikkan Kogyo Shinbun 1967
- Nishimaki, M. Electroacoustic Oscillation Corona 1978
- Ichikawa, K. Theory and Exercise of Automatic Control Sangyo Tosho 1976