| US 7,490,036 B2 | ||
| Adaptive equalizer for a coded speech signal | ||
| Mark A. Jasiuk, Chicago, Ill. (US); and Tenkasi V. Ramabadran, Naperville, Ill. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Oct. 20, 2005, as Appl. No. 11/254,823. | ||
| Prior Publication US 2007/0094016 A1, Apr. 26, 2007 | ||
| Int. Cl. G10L 19/04 (2006.01) | ||
| U.S. Cl. 704—219 [704/220; 704/221] | 23 Claims |
| 1. A speech communication system, comprising:
a speech decoder that receives a set of coded parameters representative of the desired signal characteristics without explicit
quantization and transmission of information about an equalizer response and inputting quantized, and uses the set of coded
parameters and the inputting quantized spectral coefficients to generate reconstructed speech,
said speech decoder comprising an equalizer that
computes equalizer response including a matching set of speech coder parameters from the reconstructed speech that match speech
coder parameters that were quantized by a speech encoder before the speech encoder transmitted the set of coded parameters
representative of the desired signal characteristics to the speech decoder,
undoes the set of characteristics corresponding to the computed set of speech coder parameters, and
imposes the set of characteristics corresponding to the coded set of speech coder parameters,
thereby producing equalized reconstructed speech.
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