Signal processing device and signal processing method
AssigneeRealtek Semiconductor Corp.
InventorChieh-Min TSAI
Life of this patent
Estimating the term…
Abstract
A signal processing device includes an acoustic echo cancellation (AEC) circuit, a blocking matrix circuit, a controller, a subtractor, and a filter. The AEC circuit performs an AEC operation based on a far-end signal and a first input signal to generate a processed signal. The blocking matrix circuit suppresses a target signal component of the first input signal and a second input signal, to generate a reference signal. The controller generates a control coefficient based on the processed signal and the second input signal. The subtractor generates an output signal based on the filtered signal and the processed signal. The filter generates the filtered signal in response to the control coefficient, the reference signal, and the output signal.
Claims20
A signal processing device, comprising:
- an acoustic echo cancellation (AEC) circuit configured to perform an acoustic echo cancellation process based on a far-end signal and a first input signal, to generate a first processed signal;
- a blocking matrix circuit configured to suppress a target signal component of the first input signal and a second input signal, to generate a reference signal;
- a first controller configured to generate a first control coefficient based on the first processed signal and the second input signal;
- a subtractor configured to generate a first output signal based on the first processed signal and a filtered signal;
- and
- a filter configured to generate the filtered signal in response to the first control coefficient, the reference signal and the first output signal.
A signal processing device, comprising:
- an acoustic echo cancellation (AEC) circuit configured to perform an acoustic echo cancellation process based on a far-end signal and a first input signal, to generate a first processed signal;
- a first frequency converter circuit configured to generate the first input frequency domain signal corresponding to the first input signal;
- a second frequency converter circuit configured to generate the second input frequency domain signal corresponding to the second input signal;
- a first controller configured to generate a first control coefficient based on the first processed signal and the second input signal;
- a subtractor configured to generate a first output signal based on the first processed signal and a filtered signal;
- and
- a filter configured to generate the filtered signal in response to the first control coefficient, the reference signal and the first output signal.
A signal processing method, comprising:
- performing an acoustic echo cancellation (AEC) process based on a far-end signal and a first input signal, to generate a first processed signal;
- suppressing a target signal component of the first input signal and a second input signal, to generate a reference signal;
- generating a first control coefficient based on the first processed signal and the second input signal;
- generating a first output signal based on the first processed signal and a filtered signal;
- and
- generating the filtered signal in response to the first control coefficient, the reference signal and the first output signal.
Dependencies are inferred from the claim text.