Pulse or digital communications – Equalizers – Automatic
Patent
1995-09-13
1997-07-01
Chin, Stephen
Pulse or digital communications
Equalizers
Automatic
375349, 375350, 370290, 370291, 370488, 379410, 379411, 36472419, H03H 730
Patent
active
056445962
ABSTRACT:
A method and apparatus for performing subband adaptive filtering is proposed. A signal is prefiltered by a set of complementary filters to provide corresponding subbands of the input signal. The subbands of the signal are then provided to adaptive filters that filter the subbands separately. The individually filtered subbands are then summed. In an exemplary implementation an echo canceller is presented which employs the subband filtering method and apparatus.
REFERENCES:
patent: 4956838 (1990-09-01), Gilloire et al.
patent: 5136577 (1992-08-01), Amano et al.
patent: 5272695 (1993-12-01), Makino et al.
patent: 5305307 (1994-04-01), Chu
patent: 5329587 (1994-07-01), Morgan et al.
Fumio Amano and Hector Perez, A New Subband Echo Canceler Structure, Jul. 1991, IEEE, pp. 3585-3588.
Steven L. Gay and Richard J. Mammone, Fast Converging Subband Acoustic Echo Cancellation Using Rap on the WE.RTM. DSP16A, Feb. 1990, IEEE, pp. 1141-1144.
Andre Gilloire et al., Adaptive Filtering in Sub-Bands, Sep. 1988, IEEE, pp. 1572-1575.
Andre Gilloire, Experiments with Sub-Band Acoustic Echo Cancellers for Teleconferencing, 1987, IEEE, pp. 2141-2144.
Chin Stephen
English Sean
Golden Linli L.
Le Amanda T.
Miller Russell B.
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