-
1.
公开(公告)号:US20240038211A1
公开(公告)日:2024-02-01
申请号:US17875364
申请日:2022-07-27
Inventor: John Bryan-Merrett , Mert Salahi , Wilbur Lawrence , Samuel P. Ebenezer , Rachid Kerkoud
IPC: G10K11/178
CPC classification number: G10K11/17885 , G10K11/17853 , G10K11/17881
Abstract: An adaptive noise-canceling system generates an anti-noise signal with a filter that has a response controlled by a set of coefficients selected from a collection of coefficient sets. The adaptive noise-canceling system includes an acoustic output transducer for reproducing a signal containing the anti-noise signal, a first microphone for measuring ambient noise at a first location to produce a first noise measurement signal, a second microphone for measuring the ambient noise at a second location to generate a second noise measurement signal, and an analysis subsystem for analyzing the first noise measurement signal and the second noise measurement signal. The adaptive noise-canceling system also includes a controller that selects the set of coefficients from the collection of coefficient sets according to a phase difference between the first noise measurement signal and the second noise measurement signal as determined by the analysis subsystem.
-
公开(公告)号:US11948546B2
公开(公告)日:2024-04-02
申请号:US17858771
申请日:2022-07-06
Inventor: Samuel P. Ebenezer , Rachid Kerkoud
IPC: G10K11/178 , H04R1/10
CPC classification number: G10K11/17854 , G10K11/17823 , G10K11/17825 , G10K11/17881 , H04R1/1083 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3044 , H04R2460/01
Abstract: An adaptive noise-canceling system generates an anti-noise signal from a noise reference signal with a feed-forward filter that filters the noise reference signal to produce the anti-noise signal. The feed-forward filter has a first response controlled by a set of first coefficients. The adaptive noise-canceling system includes a measurement subsystem for measuring a characteristic of an acoustic environment of the adaptive noise-canceling system, a classifier for classifying the characteristic of the acoustic environment by analyzing an output of the measurement subsystem, and a controller that provides the set of first coefficients to the feed-forward filter in conformity with an output of the classifier. The controller may include a look-up table for providing sets of values of the first coefficients to the feed-forward filter in conformity with an indication provided from the classifier and corresponding to a classification of the characteristic of the acoustic environment of the adaptive noise-canceling system.
-
3.
公开(公告)号:US20240013765A1
公开(公告)日:2024-01-11
申请号:US17858771
申请日:2022-07-06
Inventor: Samuel P. Ebenezer , Rachid Kerkoud
IPC: G10K11/178 , H04R1/10
CPC classification number: G10K11/17854 , G10K11/17823 , H04R1/1083 , G10K11/17881 , G10K11/17825 , G10K2210/3044 , G10K2210/3027 , G10K2210/3028 , G10K2210/1081 , H04R2460/01 , G10K2210/3026
Abstract: An adaptive noise-canceling system generates an anti-noise signal from a noise reference signal with a feed-forward filter that filters the noise reference signal to produce the anti-noise signal. The feed-forward filter has a first response controlled by a set of first coefficients. The adaptive noise-canceling system includes a measurement subsystem for measuring a characteristic of an acoustic environment of the adaptive noise-canceling system, a classifier for classifying the characteristic of the acoustic environment by analyzing an output of the measurement subsystem, and a controller that provides the set of first coefficients to the feed-forward filter in conformity with an output of the classifier. The controller may include a look-up table for providing sets of values of the first coefficients to the feed-forward filter in conformity with an indication provided from the classifier and corresponding to a classification of the characteristic of the acoustic environment of the adaptive noise-canceling system.
-
公开(公告)号:US10297267B2
公开(公告)日:2019-05-21
申请号:US15595168
申请日:2017-05-15
Inventor: Samuel P. Ebenezer , Rachid Kerkoud
IPC: H04R3/00 , G10L21/0264 , H04R1/40 , G10L19/005 , G10L21/0208 , H04R1/10 , G10L25/78 , G10L21/0216
Abstract: In accordance with embodiments of the present disclosure, a method for voice processing in an audio device having an array of a plurality of microphones wherein the array is capable of having a plurality of positional orientations relative to a user of the array, is provided. The method may include periodically computing a plurality of normalized cross-correlation functions, each cross-correlation function corresponding to a possible orientation of the array with respect to a desired source of speech, determining an orientation of the array relative to the desired source based on the plurality of normalized cross-correlation functions, detecting changes in the orientation based on the plurality of normalized cross-correlation functions, and responsive to a change in the orientation, dynamically modifying voice processing parameters of the audio device such that speech from the desired source is preserved while reducing interfering sounds.
-
-
-