Speech enhancement system and method
First Claim
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1. A system, comprising:
- a speech enhancement processor configured to receive an input signal and output a processed signal; and
an encoder device coupled with the speech enhancement processor and configured to receive the processed signal from the speech enhancement processor, where the encoder device is configured to use a codebook to encode the processed signal for transmission over a communication channel;
where the speech enhancement processor is configured to modify one or more characteristics of the input signal based on the codebook associated with the encoder device to generate the processed signal.
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Abstract
A speech enhancement system improves speech conversion within an encoder and decoder. The system includes a first device that converts sound waves into operational signals. A second device selects a template that represents an expected signal model. The selected template models speech characteristics of the operational signals through a speech codebook that is further accessed in a communication channel.
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Citations
20 Claims
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1. A system, comprising:
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a speech enhancement processor configured to receive an input signal and output a processed signal; and an encoder device coupled with the speech enhancement processor and configured to receive the processed signal from the speech enhancement processor, where the encoder device is configured to use a codebook to encode the processed signal for transmission over a communication channel; where the speech enhancement processor is configured to modify one or more characteristics of the input signal based on the codebook associated with the encoder device to generate the processed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A speech enhancement system, comprising:
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a memory that retains a codebook of spectral shape templates used by an encoder device; a speech enhancement processor coupled with the memory and the encoder device, where the speech enhancement processor is configured to; receive an input signal; modify at least one spectral characteristic of the input signal based on at least one of the spectral shape templates to generate a processed signal; and output the processed signal to the encoder device that uses the codebook to encode the processed signal for transmission over a communication channel. - View Dependent Claims (14, 15)
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16. A speech enhancement method, comprising:
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receiving an input signal at a speech enhancement processor; accessing, by the speech enhancement processor, a memory that retains a codebook of spectral shape templates used by an encoder device; modifying, by the speech enhancement processor, at least one spectral characteristic of the input signal based on at least one of the spectral shape templates to generate a processed signal; and outputting the processed signal from the speech enhancement processor to the encoder device that uses the codebook to encode the processed signal for transmission over a communication channel. - View Dependent Claims (17, 18, 19, 20)
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Specification