Headset noise-based pulsed attenuation
AssigneeBose Corporation
InventorPaul G. Yamkovoy
Life of this patent
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Abstract
A headset having a talk-through microphones incorporates an audio circuit that disconnects or compresses a signal representing sounds detected by the talk-through microphones in response to the audio circuit detecting the onset of a peak in the signal that exceeds a predetermined voltage level, and that does so with a rate of change in voltage level that exceeds a predetermined rate of change in voltage level. The duration of the disconnection or compression may be controlled by a timing circuit set to a predetermined period of time that may be retriggerable while amidst the predetermined period of time.
Claims22
A method of controlling sounds acoustically output by an acoustic driver disposed within a casing of an earpiece of a headset, the method comprising:
- monitoring a signal representing sounds detected by a microphone of the headset that is acoustically coupled to the environment external to the casing;
- detecting an onset of a peak in the signal that exceeds a predetermined voltage level and that has a rate of change in voltage level that exceeds a predetermined rate of change;
- and
- operating a switch to disconnect the signal from an input of an amplifier, thereby preventing the peak from being conveyed to the amplifier.
A headset comprising:
- a first earpiece comprising:
- a first casing;
- and
- a first acoustic driver disposed therein;
- a first microphone carried by structure of the headset and acoustically coupled to an environment external to the first casing;
- and
- an audio circuit coupled to the first acoustic driver and the first microphone, the audio circuit receiving a signal representing sounds detected by the first microphone and providing an output to the first acoustic driver,
- the audio circuit comprising a switch and an amplifier;
- wherein the audio circuit is configured to operate the switch to disconnect the signal from the amplifier in response to detecting an onset of a peak in the signal that exceeds a predetermined voltage level and that has a rate of change in voltage level that exceeds a predetermined rate of change, thereby preventing the peak from being conveyed to the amplifier.
A method of controlling sounds acoustically output by an acoustic driver disposed within a casing of an earpiece of a headset, the method comprising:
- monitoring a signal representing sounds detected by a microphone of the headset that is acoustically coupled to the environment external to the casing;
- detecting an onset of a peak in the signal that exceeds a predetermined voltage level and that has a rate of change in voltage level that exceeds a predetermined rate of change;
- and
- compressing the signal for a predetermined period of time, thereby preventing the peak from being conveyed to an input of an amplifier.
A headset comprising:
- a first earpiece comprising:
- a first casing;
- and
- a first acoustic driver disposed therein;
- a first microphone carried by structure of the communications headset and acoustically coupled to an environment external to the first casing;
- and
- an audio circuit coupled to the first acoustic driver and the first microphone, the audio circuit receiving a signal representing sounds detected by the first microphone and providing an output to the first acoustic driver,
- the audio circuit comprising a switch and an amplifier;
- wherein the audio circuit is configured to compress the signal for a predetermined period of time in response to detecting an onset of a peak in the signal that exceeds a predetermined voltage level and that has a rate of change in voltage level that exceeds a predetermined rate of change, thereby preventing the peak from being conveyed to the amplifier.
Dependencies are inferred from the claim text.