Method and apparatus for spatially enhancing stereo and monophon

Details Method and apparatus for spatially enhancing stereo and monophon Method and apparatus for spatially enhancing stereo and monophon

1997-05-08

1999-03-16

Loomis, Paul

Electrical audio signal processing systems and devices

Binaural and stereophonic

H04R 500

Patent

active

058839623

ABSTRACT:
A method and apparatus is disclosed which spatially enhances stereo signals without sacrificing compatibility with monophonic receivers. In accordance with one embodiment of the present invention, a stereo enhancement system is implemented using only two op-amps and two capacitors and may be switched between a spacial enhancement mode and a bypass mode. In other embodiments, simplified stereo enhancement systems are realized by constructing one of the output channels as the sum of the other output channel and the input channels. In other embodiments, a pseudo-stereo signal is synthesized and spatially enhanced according to stereo speaker crosstalk cancellation principles. In yet other embodiments, the respective spacial enhancements of monophonic signals and stereo signals are integrally combined into a single system capable of blending, in a continuous manner, the enhancement effects of both.

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