Method and apparatus for adaptive echo and noise control
AssigneeMotorola, Inc.
InventorJianhua Pan
Life of this patent
Estimating the term…
Abstract
A method and apparatus for adaptive echo and noise control. A signal can be received at an input to a communication or electronic device. Background noise in the signal can be determined. The order of noise suppression and echo cancellation can be adaptively determined based on the background noise in the signal. Adaptively determining the order of noise suppression and echo cancellation can be performed by comparing the background noise to at least one threshold, performing echo cancellation prior to noise suppression on the signal if the background noise is below the at least one threshold, and performing noise suppression prior to echo cancellation on the signal if the background noise is above the at least one threshold.
Claims20
A method for echo and noise control in a communication device, comprising:
- receiving a signal at an input to the communication device;
- determining background noise in the signal;
- and
- adaptively determining an order of noise suppression and echo cancellation based on the background noise in the signal.
An electronic device, comprising:
- an audio input configured to receive a received signal;
- an audio output configured to output an output signal;
- a transceiver configured to transmit a transmitted signal;
- and
- an adaptive echo and noise control system coupled to the audio input, the audio output, and the transceiver, the adaptive echo and noise control system including
- an echo canceller;
- and
- a noise suppressor,
- wherein the adaptive echo and noise control system is configured to adaptively determine an order of echo cancellation and noise suppression based on an amount of noise in the received signal to generate a desired signal, and
- wherein the adaptive echo and noise control system is further configured to send the desired signal to the transceiver.
A method for echo cancellation and noise suppression in a mobile communication device, comprising:
- receiving an acoustic signal at an input to the mobile communication device, the acoustic signal including a speech component, an echo component, and a noise component;
- obtaining the noise component in the acoustic signal;
- comparing the noise component to at least one threshold;
- configuring the order of echo cancellation and noise suppression to perform echo cancellation prior to noise suppression on the acoustic signal if the noise component is below the at least one threshold to obtain a desired signal;
- configuring the order of echo cancellation and noise suppression to perform noise suppression prior to echo cancellation on the acoustic signal if the noise component is above the at least one threshold to obtain a desired signal;
- and
- transmitting the desired signal.
Dependencies are inferred from the claim text.