Sound field enlarging device and method

Details Sound field enlarging device and method Sound field enlarging device and method

1985-04-23

1987-02-10

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

369 87, H04R 500

Patent

active

046428127

ABSTRACT:
A method for performing sound field enlargement in a digital audio reproducing apparatus such as a compact disc player. A sum is calculated between each received pair of right-channel and left-channel data read from the disc, and the resulting sum data is stored in a random access memory. After a predetermined delay time, the sum data are read from the memory and multiplexed with the then-incoming right-channel and left-channel data. The resulting data stream is converted to respective right-channel, left-channel, and delayed-sum analog signals, which are then subjected to low-pass filtering. The filtered signals are processed in a conventional manner to yield outputs signals which, when reproduced, produce a perception of an enlarged sound field.

REFERENCES:
patent: 4118599 (1978-10-01), Iwahara et al.

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