Voice activity detection (VAD) devices and methods for use with noise suppression systems
First Claim
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1. A system for denoising acoustic signals, comprising:
- a denoising subsystem including at least one receiver coupled to provide acoustic signals of an environment to components of the denoising subsystem;
a voice detection subsystem coupled to the denoising subsystem, the voice detection subsystem receiving voice activity signals that include information of human voicing activity, wherein components of the voice detection subsystem automatically generate control signals using information of the voice activity signals, wherein components of the denoising subsystem automatically select at least one denoising method appropriate to data of at least one frequency subband of the acoustic signals using the control signals; and
wherein components of the denoising subsystem process the acoustic signals using the selected denoising method to generate denoised acoustic signals.
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Abstract
Voice Activity Detection (VAD) devices, systems and methods are described for use with signal processing systems to denoise acoustic signals. Components of a signal processing system and/or VAD system receive acoustic signals and voice activity signals. Control signals are automatically generated from data of the voice activity signals. Components of the signal processing system and/or VAD system use the control signals to automatically select a denoising method appropriate to data of frequency subbands of the acoustic signals. The selected denoising method is applied to the acoustic signals to generate denoised acoustic signals.
221 Citations
18 Claims
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1. A system for denoising acoustic signals, comprising:
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a denoising subsystem including at least one receiver coupled to provide acoustic signals of an environment to components of the denoising subsystem;
a voice detection subsystem coupled to the denoising subsystem, the voice detection subsystem receiving voice activity signals that include information of human voicing activity, wherein components of the voice detection subsystem automatically generate control signals using information of the voice activity signals, wherein components of the denoising subsystem automatically select at least one denoising method appropriate to data of at least one frequency subband of the acoustic signals using the control signals; and
wherein components of the denoising subsystem process the acoustic signals using the selected denoising method to generate denoised acoustic signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for denoising acoustic signals, comprising:
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receiving acoustic signals and voice activity signals;
automatically generating control signals from data of the voice activity signals;
automatically selecting at least one denoising method appropriate to data of at least one frequency subband of the acoustic signals using the control signals; and
applying the selected denoising method and generating the denoised acoustic signals. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for removing noise from acoustic signals, comprising:
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receiving acoustic signals;
receiving information associated with human voicing activity;
generating at least one control signal for use in controlling removal of noise from the acoustic signals;
in response to the control signal, automatically generating at least one transfer function for use in processing the acoustic signals in at least one frequency subband;
applying the generated transfer function to the acoustic signals; and
removing noise from the acoustic signals. - View Dependent Claims (15, 16, 17, 18)
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Specification