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US 2018/0020281 A1Published application
In-the-ear automatic-noise-reduction devices, assemblies, components, and methods
OwnerMichael Jon Wurtz, Eric Sorenseninventors
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OwnerMichael Jon Wurtz, Eric Sorenseninventors
Estimating the term…
Automatic noise-reduction (ANR) headsets include circuitry that cancels or suppress undesired noises. Recent years have seen the emergence of in-the-ear (ITE) earphones that incorporate ANR technology; however, designing them to function well usually entails many design tradeoffs, such as using larger ear nozzles that are uncomfortable to obtain desired noise reduction or that require added structures to hold the earphones to a user ear. To avoid these tradeoffs, the present inventors devised, among other things, an exemplary ITE ANR earphone that places its error measurement microphone in the ear nozzle that connects the driver front acoustic volume to a user ear canal. This placement allows use of a narrower more comfortable ear nozzle without compromising noise reduction and without requiring added holding structures. Moreover, the narrower ear nozzle also lowers the likelihood that the ANR circuitry will become unstable and produce undesirable noise.
An in-the-ear ANR device assembly comprising:
The assembly of claim 3, further comprising a canal-conforming and sealing adapter tip removably mounted to the second end of the ear-insertion port.
The assembly of claim 11, wherein the housing includes back cavity vent for the back cavity and a front cavity vent for the front cavity;
An in-the-ear ANR device assembly comprising:
The assembly of claim 13, wherein the adapter tip comprises a polymeric foam or a silicone rubber.
A method of operating an ITE ANR earphone having an ear-insertion port, the method comprising:
Dependencies are inferred from the claim text.