GAIN AND SPECTRAL SHAPE ADJUSTMENT IN AUDIO SIGNAL PROCESSING
First Claim
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1. A method for processing an audio signal, comprising:
- estimating an echo component of an audio signal detected at a near party communication device;
receiving an audio signal transmitted from a remote party communication device to the near party communication device; and
adjusting a characteristic of the received audio signal based on the echo component of the detected audio signal.
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Abstract
A signal processing system enhances communication. When an audio signal is detected, an echo component of the detected audio signal may be estimated. A near party communication device may receive an audio signal from a remote party communication device. A characteristic of the received audio signal may be adjusted based on the echo component of the detected audio signal.
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Citations
28 Claims
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1. A method for processing an audio signal, comprising:
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estimating an echo component of an audio signal detected at a near party communication device; receiving an audio signal transmitted from a remote party communication device to the near party communication device; and adjusting a characteristic of the received audio signal based on the echo component of the detected audio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for audio signal processing, comprising:
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receiving an audio signal at a near party communication device that was transmitted from a remote party communication device; estimating local background noise at the near party communication device; estimating local acoustic echo at the near party communication device; and adjusting a gain of the received audio signal based on the estimated local background noise and the estimated local acoustic echo. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A signal processing system, comprising:
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an echo compensation filter configured to filter an audio signal detected at a near party communication device and output an estimate of an echo component of the detected audio signal; and a signal adjustment unit coupled with the echo compensation filter and configured to receive an audio signal from a remote party communication device, where the signal adjustment unit is configured to adjust a characteristic of the received audio signal based on the echo component of the detected audio signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A signal processing system, comprising:
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a loudspeaker configured to output a loudspeaker signal; a microphone configured to convert sound into an operational signal; a noise reduction filter configured to filter the operational signal and output an estimate of noise; an echo compensation filter configured to filter the operational signal and output an estimate of echo; and a signal adjustment unit in communication with the noise reduction filter and the echo compensation filter, where the signal adjustment unit is configured to receive an audio signal from a remote party communication device and adjust a gain or spectral shape of the received audio signal based on the estimate of noise and the estimate of echo. - View Dependent Claims (27, 28)
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Specification