Decoder for variable-number of channel presentation of multidime

Details Decoder for variable-number of channel presentation of multidime Decoder for variable-number of channel presentation of multidime

1993-12-28

1995-03-21

MacDonald, Allen R.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

395 239, 395 21, 381 36, 381 37, G10L 500

Patent

active

054004330

ABSTRACT:
The invention relates to the reproduction of high-fidelity multi-dimensional sound fields intended for human hearing. More particularly, the invention relates to the decoding of signals representing such sound fields delivered by one or more delivery channels, but played back over a number of presentation channels which may differ from the number of delivery channels. In one embodiment, a subband decoder combines spectral information in the frequency domain prior to inverse filtering, thereby incurring implementation costs roughly proportional to the number of presentation channels rather than to the number of delivery channels.

REFERENCES:
patent: 5274740 (1993-12-01), Davis et al.

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