Adaptive equalizer for a coded speech signal

Details Adaptive equalizer for a coded speech signal Adaptive equalizer for a coded speech signal

2005-10-20

2009-02-10

Han, Qi (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S220000, C704S221000

Reexamination Certificate

active

07490036

ABSTRACT:
A speech communication system provides a speech encoder that generates a set of coded parameters representative of the desired speech signal characteristics. The speech communication system also provides a speech decoder that receives the set of coded parameters to generate reconstructed speech. The speech decoder includes an equalizer that computes a matching set of parameters from the reconstructed speech generated by the speech decoder, undoes the set of characteristics corresponding to the computed set of parameters, and imposes the set of characteristics corresponding to the coded set of parameters, thereby producing equalized reconstructed speech.

REFERENCES:
patent: 6611798 (2003-08-01), Bruhn et al.
patent: 6668161 (2003-12-01), Boros et al.
patent: 2004/0172241 (2004-09-01), Mahe et al.
patent: 2005/0137863 (2005-06-01), Jasiuk et al.
patent: 2006/0045281 (2006-03-01), Korneluk et al.
patent: 1 141 946 (2004-04-01), None
Ramachandran, Ravi P. et al.: “Pitch Prediction Filters in Speech Coding”, IEE Transaction of Acoustics, Speech and Signal Processing, vol. 37, No. 4, Apr. 1989, pp. 467-478.
Atal, Bishnu S.: “Predictive Coding of Speech at Low Bit Rates”, IEEE Transactions on Communications, vol. COM-30, No. 4, Apr. 1982, pp. 600-614.
Chen, Juin-Hwey et al.: “Real-Time Vector APC Speech Coding at 4800BPS with Adaptive Postfiltering”, CH2396-0/87/0000-2185, © 1987 IEEE, 51.3.1, pp. 2185-2188.
ETSI EN 300 726 v8.0.1 (Nov. 2000), European Standard (Telecommunications series), Digital cellular telecommunications system (Phase 2+); Enhanced Full Rate (EFR) speech transcoding; (GSM 06.60 version 8.0.1 Release 1999), GSM, Global System For Mobile Communications, pp. 1-43.
3GPP2 C.S0052-A, Version 1.0, Date: Apr. 22, 2005, 3G: 3rdGeneration Partnership Project 2 “3GPP2”, “Source-Controlled Variable-Rate Multimode Wideband Speech Codec(VMR-WB), Service Options 62 and 63 for Spread Spectrum Systems”, pp. 1-164.

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