Broad spectrum instability detection and mitigation
AssigneeBose Corporation
InventorsDouglas George Morton, Emery M. Ku
Life of this patent
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Abstract
A method performed by an audio output device is provided for detecting instabilities and taking mitigating actions. Specifically, an A-weighted dBA level of a raw feedback signal exceeding a threshold level trigger, at least, muting the driver. The described methods apply to detecting instabilities across a broad frequency spectrum.
Claims20
An audio output device, comprising:
- an internal microphone, a driver, and an instability detector, the instability detector configured to:
- receive a feedback signal from the internal microphone of the audio output device;
- trigger muting of the driver based, at least in part, on a first number of instabilities detected over a first configured period of time;
- and
- after muting the driver, trigger a restart of the audio output device based on at least a second number of instabilities detected from the internal microphone over a second configured period of time or the triggering of the mute of the driver, wherein the second configured period of time is different than the first configured period of time, and the second number of instabilities is different than the first number of instabilities.
A method performed by an audio output device, the method comprising:
- receiving, with an instability detector, a feedback signal from an internal microphone of the audio output device;
- triggering a muting of a driver of the audio output device based, at least in part, on a first number of instabilities detected over a first configured period of time;
- and
- after the muting of the driver, triggering a restart of the audio output device based on at least a second number of instabilities detected over a second configured period of time or the triggering of the muting of the driver, wherein the second configured period of time is different than the first configured period of time, and the second number of instabilities is different than the first number of instabilities.
A non-transitory computer-readable medium comprising computer-executable instructions that, when executed by one or more processors of an audio output device, individually or collectively, cause the audio output device to perform a method, the method comprising:
- receiving, by the one or more processors, a feedback signal from a first internal microphone;
- triggering a muting of a driver of the audio output device based, at least in part, on a first number of instabilities detected over a first configured period of time;
- and
- after muting the driver, trigger a restart of the audio output device based on at least a second number of instabilities detected from the first internal microphone over a second configured period of time or the triggering of the mute of the driver, wherein the second configured period of time is different than the first configured period of time, and the second number of instabilities is different than the first number of instabilities.
Dependencies are inferred from the claim text.