H - Electricity – 04 – R
Patent
H - Electricity
04
R
179/2
H04R 3/04 (2006.01) G10L 19/02 (2006.01) H04B 1/66 (2006.01)
Patent
CA 1184128
Abstract: In a speech communication system, an input speech signal is partitioned into a plurality of subband portions. Responsive to each subband portion, a signal of lesser bandwidth representative of the subband portion is generated by dividing the instantaneous phase of the subband by an integer k where k=2, for example, the center frequency and bandwidth of each subband is halved. The lesser bandwidth subband portion representative signals are combined to form a compressed bandwidth signal representative of the input speech signal. A replica of the input speech signal is formed by partitioning the compressed bandwidth signal into subband portions thereof; converting each compressed signal subband portion into a signal representative of a subband of the input speech signal; and combining the converted subband representative signals into a single speech signal replica.
385507
Kirby Eades Gale Baker
Western Electric Company Incorporated
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