Low bit rate transform coder, decoder, and encoder/decoder for h

Details Low bit rate transform coder, decoder, and encoder/decoder for h Low bit rate transform coder, decoder, and encoder/decoder for h

1991-11-04

1993-07-20

Macdonald, Allen R.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 35, 381 36, 381 37, G01L 500

Patent

active

052300382

ABSTRACT:
A transform encoder, a transform decoder, and a transform encoder/decoder system utilize complex pre- and post-transform multiplication of input signal samples to implement concurrent application of a modified Discrete Cosine Transform and a modified Discrete Sine Transform according to the Evenly-Stacked Time Domain Aliasing Cancellation technique against two channels of input signal samples, and to reduce the computational complexity of a digital filter bank of a modified Discrete Cosine Transform.

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Narasimha and Peterson, "On the Computation of the Discrete Cosine Transform," IEEE Trans. Communications, COM-26, Jun., 1978, pp. 943-936.

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