10079026 is referenced by 1 patents and cites 3 patents.

A method may include determining a desired speech estimate originating from a speech acceptance direction range while reducing a level of interfering noise, determining an interfering noise estimate originating from a noise rejection direction range while reducing a level of desired speech, calculating a ratio of the desired speech estimate to the interfering noise estimate, dynamically computing a set of thresholds based on the speech acceptance direction range, noise rejection direction range, a background noise level, and a noise type, estimating a power spectral density of background noise arriving from the noise rejection direction range, calculating a frequency-dependent gain function based on the power spectral density of background noise and thresholds, and applying the frequency-dependent gain function to at least one microphone signal generated by the plurality of microphones to reduce noise arriving from the noise rejection direction while preserving desired speech arriving from the speech acceptance direction.

Title
Spatially-controlled noise reduction for headsets with variable microphone array orientation
Application Number
15/827160
Publication Number
10079026 (B1)
Application Date
November 30, 2017
Publication Date
September 18, 2018
Inventor
Samuel P Ebenezer
Tempe
AZ, US
Agent
Jackson Walker L
Assignee
Cirrus Logic
TX, US
IPC
H04R 25/00
G10K 11/175
G10L 25/78
H04R 1/10
G10L 21/0208
H04B 15/00
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