Acoustic keystroke transient canceler for communication terminals using semi-blind adaptive filter model

Abstract

Provided are methods and systems for acoustic keystroke transient cancellation / suppression for user communication devices using a semi-blind adaptive filter model. The methods and systems are designedto overcome existing problems in transient noise suppression by taking into account some less-defective signal as side information on the transients and also accounting for acoustic signal propagation, including the reverberation effects, using dynamic models. The methods and systems take advantage of a synchronous reference microphone embedded in the keyboard of the user device, and utilize an adaptive filtering approach exploiting the knowledge of this keybed microphone signal.

Description

Background technique [0001] In audio and / or video conferencing environments, it is common to encounter annoying keyboard typing noises, both simultaneously with speech and during "silent" pauses between speech. Typical scenarios are people on a conference call taking notes on their laptops while the meeting is in progress, or someone checking their e-mail during a voice call. When this type of noise is present in the audio data, it can be particularly annoying or annoying to the user. Contents of the invention [0002] This Summary introduces a selection of concepts in a simplified form to provide a basic understanding of some aspects of the disclosure. This summary is not an extensive overview of the disclosure and it is not intended to identify key or critical elements of the disclosure or to delineate the scope of the disclosure. This summary merely presents some concepts of the disclosure as a prelude to the detailed description presented below. [0003] The present d...

AI Technical Summary

Problems solved by technology

When this type of noise is present in the audio data, it can be particularly annoying or annoying to the user

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