Digital analyzing and synthesizing filter bank with maximum samp

Details Digital analyzing and synthesizing filter bank with maximum samp Digital analyzing and synthesizing filter bank with maximum samp

1986-03-24

1988-08-23

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 738

Patent

active

047665629

ABSTRACT:
A digital analyzing and synthesizing filter bank in which a digital polyphase network in the analyzing filter bank provides sampling rate reduction by dividing an input signal into M complex sub-band signals, and the sub-band signals are subjected to a further staggered sampling rate reduction of the real and imaginary components thereof. This achieves maximum sampling reduction while permitting aliasing distortions to be compensated in the synthesizing filter bank.

REFERENCES:
patent: 4589130 (1986-05-01), Galand
patent: 4622680 (1986-11-01), Zinser
patent: 4623980 (1986-11-01), Vary
patent: 4691292 (1987-09-01), Rothweiler
Esteban et al., "HQMF: Halfband Quadrature Mirror Filters", Proceedings of the 1981 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 81, pp. 220-223.
Bellanger et al., "Digital Filtering by Polyphase Network: Application to Sample-Rate Alteration and Filter Banks", IEEE Trans. on Acoustics, Speech, and Signal Processing, vol. ASSP-24, No. 2, Apr. 1976, pp. 109-114.

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