Method and apparatus for multi-sensory speech enhancement
First Claim
1. A method of determining an estimate for a noise-reduced value representing a portion of a noise-reduced speech signal, the method comprising:
- generating an alternative sensor signal using an alternative sensor other than an air conduction microphone;
converting the alternative sensor signal into at least one alternative sensor vector; and
adding a correction vector to the alternative sensor vector to form the estimate for the noise-reduced value.
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Accused Products
Abstract
A method and system use an alternative sensor signal received from a sensor other than an air conduction microphone to estimate a clean speech value. The estimation uses either the alternative sensor signal alone, or in conjunction with the air conduction microphone signal. The clean speech value is estimated without using a model trained from noisy training data collected from an air conduction microphone. Under one embodiment, correction vectors are added to a vector formed from the alternative sensor signal in order to form a filter, which is applied to the air conductive microphone signal to produce the clean speech estimate. In other embodiments, the pitch of a speech signal is determined from the alternative sensor signal and is used to decompose an air conduction microphone signal. The decomposed signal is then used to determine a clean signal estimate.
367 Citations
29 Claims
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1. A method of determining an estimate for a noise-reduced value representing a portion of a noise-reduced speech signal, the method comprising:
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generating an alternative sensor signal using an alternative sensor other than an air conduction microphone;
converting the alternative sensor signal into at least one alternative sensor vector; and
adding a correction vector to the alternative sensor vector to form the estimate for the noise-reduced value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of determining an estimate of a clean speech value, the method comprising:
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receiving an alternative sensor signal from a sensor other than an air conduction microphone;
receiving an air conduction microphone signal from an air conduction microphone;
identifying a pitch for a speech signal based on the alternative sensor signal;
using the pitch to decompose the air conduction microphone signal into a harmonic component and a residual component; and
using the harmonic component and the residual component to estimate the clean speech value. - View Dependent Claims (13)
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14. A computer-readable medium having computer-executable instructions for performing steps comprising:
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receiving an alternative sensor signal from an alternative sensor that is not an air conduction microphone; and
using the alternative sensor signal to estimate a clean speech value without using a model trained from noisy training data collected from an air conduction microphone. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification