Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Patent
1997-08-11
1999-12-21
Lee, Ping
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
H04R 500
Patent
active
06005946&
ABSTRACT:
The reproduction of mono audio signals leads to an unpleasant sound impression because of the lack of any spatial character. It is therefore desirable to produce a two-channel signal electrically from the single-channel input signal. Some of the known single-band methods are very costly and provide only an inadequate impression of a spatial character. In the case of the invention, a plurality of signals of different types are first of all formed from the mono input signal by filtering, and virtual single-band stereo signals are then generated separately for each of these signals of different types. These stereo signals are subsequently combined to form two output signals.
REFERENCES:
patent: 4555795 (1985-11-01), Bedini
patent: 5235646 (1993-08-01), Wilde et al.
patent: 5301236 (1994-04-01), Iizuka et al.
patent: 5369224 (1994-11-01), Miyata
Journal of the Audio Engineering Society, "An Artificial Stereophonic Effect Obtained from a Single Audio Signal", Apr. 1958, vol. 6, No. 2.
Schmidt Jurgen
Varga Imre
Akiyama Kuniyuki
Deutsche Thomson-Brandt GmbH
Emanuel Peter M.
Lee Ping
Tripoli Joseph S.
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