Processing audio signals during a communication event

摘要

A method of processing audio signals during a communication session between a user device and a remote node, includes receiving a plurality of audio signals at audio input means at the user device including at least one primary audio signal and unwanted signals and receiving direction of arrival information of the audio signals at a noise suppression means. Known direction of arrival information representative of at least some of said unwanted signals is provided to the noise suppression means and the audio signals are processed at the noise suppression means to treat as noise, portions of the signal identified as unwanted dependent on a comparison between the direction of arrival information of the audio signals and the known direction of arrival information.

主权项

1. A method of processing audio signals during a communication session between a user device and a remote node, the method comprising:
receiving a plurality of audio signals at the user device, the plurality of audio signals including at least one primary audio signal and unwanted signals; receiving direction of arrival information of the audio signals at a noise reduction stage; querying the user device for stored known direction of arrival information stored from one or more prior communication sessions; providing to the noise reduction stage known direction of arrival information representative of at least some of said unwanted signals; estimating at least one principal direction from which the at least one primary audio signal is received at a beamformer at the user device; processing the plurality of audio signals to generate a single channel audio output signal comprising a sequence of frames, the noise reduction stage processing each of said frames in sequence; comparing the direction of arrival information for a principal signal component of the current frame being processed with the known direction of arrival information; determining whether the principal signal component of the current frame is an unwanted signal based on said comparison; and responsive to determining that the principal signal component of the current frame is an unwanted signal based on direction of arrival information, applying maximum attenuation to the entire current frame.