Headset noise-based pulsed attenuation

摘要

A headset having a talk-through microphones incorporates an audio circuit that compresses a signal representing sounds detected by the talk-through microphones in response to the audio circuit detecting the onset of a peak (positive and/or negative) in the signal that exceeds a predetermined voltage level (positive and/or negative voltage level, perhaps a predetermined magnitude of voltage from a zero 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 degree of compression possibly being a compression to or near a zero amplitude (perhaps to or near a zero voltage level) and the duration of the compression possibly being controlled by a timing circuit set to a predetermined period of time that may be retriggerable while amidst the predetermined period of time.

主权项

1. A method of controlling sounds acoustically output by an acoustic driver disposed within a casing of an earpiece of a headset, the method comprising:
compressing a signal representing sounds detected by a microphone of the headset that is acoustically coupled to the environment external to the casing 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, and reducing a gain of the signal in response to detecting speech sounds of a user of the headset detected by a noise-canceling communications microphone that is disposed on the headset towards the vicinity of the user's mouth.