Sound image enhancement apparatus

Details Sound image enhancement apparatus Sound image enhancement apparatus

1995-06-06

1997-08-12

Kuntz, Curtis

Electrical audio signal processing systems and devices

Binaural and stereophonic

381 63, H04R 500

Patent

active

056573910

ABSTRACT:
A sound image enhancement apparatus for reproducing two-channel stereo signals with speakers, includes for each channel a first phase shifter and a second phase shifter for introducing different amounts of phase shift to the signals. These phase shifters may be connected in parallel or in series. This arrangement enables virtual speakers to be located at the back of a listener. An inexpensive DSP is usable, and the number of processing steps is reduced to about one third of the number when an FIR filter is used. Moreover, it is possible to reproduce reverberation sounds from the front, back and sides, thereby simulating sound fields at a live performance.

REFERENCES:
patent: 5067157 (1991-11-01), Ishida et al.
patent: 5119420 (1992-06-01), Kato et al.
patent: 5121433 (1992-06-01), Kendall et al.
patent: 5305386 (1994-04-01), Yamato

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