Title:
パーソナルオーディオデバイスにおける適応雑音消去（ＡＮＣ）の有効性推定および補正
Document Type and Number:
Japanese Patent JP6564010
Kind Code:
B2
Abstract:
Techniques for estimating adaptive noise canceling (ANC) performance in a personal audio device, such as a wireless telephone, provide robustness of operation by triggering corrective action when ANC performance is low, and/or by saving a state of the ANC system when ANC performance is high. An anti-noise signal is generated from a reference microphone signal and is provided to an output transducer along with program audio. A measure of ANC gain is determined by computing a ratio of a first indication of magnitude of an error microphone signal that provides a measure of the ambient sounds and program audio heard by the listener including the effects of the anti-noise, to a second indication of magnitude of the error microphone signal without the effects of the anti-noise. The ratio can be determined for different frequency bands in order to determine whether particular adaptive filters are trained properly.
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Inventors:
Ninri
Antonio John Miller
John Dee. Hendricks
Gee Sue
Jeffrey Alderson
Mirani Ali Abdullah Zaday
Antonio John Miller
John Dee. Hendricks
Gee Sue
Jeffrey Alderson
Mirani Ali Abdullah Zaday
Application Number:
JP2017251648A
Publication Date:
August 21, 2019
Filing Date:
December 27, 2017
Export Citation:
Assignee:
Shirasu Logic, Inc.
International Classes:
G10K11/178
Domestic Patent References:
| JP6280199B2 | ||||
| JP2007093962A |
Foreign References:
| WO2012166386A2 | ||||
| US20100014685 |
Attorney, Agent or Firm:
Takeshi Oshio