Bose Corporation

Lei Cheng

Ole Mattis Nielsen

Andrew D Munro

Brandon Lee Olmos

David J Warkentin

Michael Patrick O'Connell

Ellen I Searl

Emery M Ku

Andrew D Dominijanni

Joseph Jankovsky

Cedrik Bacon

Ryan C Struzik

Mark Andrew Hayner

Benjamin G K Peterson

Daniel M Gauger, Jr

Eric Matthew Wallace

Jahn Dmitri Eichfeld

Shawn J Prevoir

Ray Scott Wakeland

John Allen Rule

Christopher A Pare

Agota F Fehervari

Travis Lee Hein

Siamak Farahbakhsh

Michael J Daley

Anand Parthasarathi

Matthew Ryan Hicks

Yashar Motedayen Aval

Nicholas John Joseph

Zarif Farhana Mohd Aris

Ninad Ravindra Gadre

Shaun Ente

Shaun Douglas Ente

Peter Mcphillips Moriarty

Matthew M Mckee

Jr Daniel M Gauger

Michael P O'CONNELL

Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a diaphragm having a surface area configured to radiate acoustic energy; a suspension coupled to the diaphragm, wherein the suspension is non-planar in a resting position; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the support structure of approximately 6.0 millimeters (mm) or less, wherein the surface area of the diaphragm is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the support structure; and wherein the suspension between an inner side wall of the support structure and the diaphragm has a rounded shape in the resting position.

Highly compliant miniature transducer

A headphone includes an earphone that includes an earcup, an ear cushion, and a driver plate assembly. The driver plate assembly is supported in the earcup and includes a driver plate, a driver mounted along a rear surface of the driver plate, an opening that is provided in the driver plate to allow acoustic energy to pass from the driver into a user's ear canal, a ring that is arranged substantially coaxially with the opening, and an acoustic mesh. The ring defines a planar surface on which the acoustic mesh is mounted.

Headphones

Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, a method for processing audio signals includes receiving a noise reduction signal configured to modify an audio signal and generate a noise reduced audio signal, the noise reduction signal having a nominal loop gain; and generating an adjusted noise reduction signal in response to a detected adverse low frequency event, the adjusted noise reduction signal having a modulated loop gain configured to reduce artifacts in the noise reduced audio signal.

Wearable active noise reduction (ANR) device having low frequency feedback loop modulation

An active noise reduction earbud includes a housing and a first feedforward microphone disposed in the housing. A first sound inlet opening extends through the housing and is configured to conduct external sound to the first feedforward microphone. The first sound inlet opening is configured to sit within a concha cavum of a user's ear and faces toward an auricle of the user's ear when the earbud is worn.

Active noise reduction earbud

The present disclosure provides hearing assistance devices and methods of generating a resonance within hearing assistance devices that use moving coil drivers, e.g., electro-dynamic coil drivers. As small moving coil drivers are typically inefficient within the voice band of frequencies, e.g., above 1 kHz, the hearing assistance devices described herein utilize the resonance of a mass within the hearing assistance device and a compliance of air within the housing of the hearing assistance device or within portions of the acoustic driver housing to aid in amplification of select frequencies within the voice band of human speech, e.g., between 2.5 kHz and 6 kHz. By using the assistance of the resonance created, the moving coil driver utilized does not need to operate as efficiently within the range of resonance frequencies.

Hearing assistance devices and methods of generating a resonance within a hearing assistance device

Various implementations include audio devices and methods for noise reduction control in wearable audio devices and/or vehicle audio systems. Certain implementations include a non-occluding wearable audio device having: at least one electro-acoustic transducer; at least one microphone; and a control system coupled with the at least one electro-acoustic transducer and the at least one microphone, the control system programmed to: adjust an active noise reduction (ANR) setting for audio output to the at least one electro-acoustic transducer in response to detecting use of the non-occluding wearable audio device in a vehicle.

Active noise reduction control for non-occluding wearable audio devices

Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cone having a surface area configured to radiate acoustic energy; a suspension coupled to the cone; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the cone of approximately 6.0 millimeters (mm) or less, wherein the surface area of the cone is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the cone.

Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, an ANR system for a wearable audio device includes: a fixed filter that receives a signal from a feedback microphone and outputs a noise reduction signal, where the fixed filter is configured to provide ANR with a nominal loop gain; and a tunable filter that outputs an adjusted noise reduction signal by modulating the nominal loop gain in response to low frequency noise being detected in the noise reduction signal, where modulating the nominal loop gain includes reducing low frequency ANR performance.

Various aspects include a wearable audio device having active noise reduction (ANR), where the ANR device includes: a feedback microphone; an electroacoustic transducer; and a feedback compensator configured to output a noise reduction signal to the electroacoustic transducer in response to a feedback signal from the feedback microphone, wherein the feedback compensator includes a tunable filter that modulates a loop gain in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, wherein the tunable filter is configured to maintain a substantially similar loop gain shape near a low frequency cross-over as the low frequency cross-over changes during loop gain modulation.

An active noise reduction earbud and method. The earbud includes a housing comprising an outlet portion that defines a sound outlet, wherein the outlet portion is configured to be located in or proximate the external auditory meatus of a user's ear, a first feedforward microphone configured to develop a first input signal, and a first sound inlet opening in the housing and configured to conduct external sound to be sensed by the first feedforward microphone, wherein the first sound inlet opening is proximate the outlet portion.

An earpiece includes an acoustic mass element, and an acoustic resistance element that is arranged acoustically in parallel with the acoustic mass element. The acoustic mass element and the acoustic resistance element are arranged to couple a user's ear canal to an external environment when worn.

Earpieces and related articles and devices

The disclosure is related to compositions including viscoelastic materials. The compositions are suitable for use in earpieces such as in-ear earpieces.

Earpieces employing viscoelastic materials

An earphone includes an earphone assembly and first and second electro-acoustic transducers. The earphone assembly includes an earphone body with an inner surface, an acoustic opening and a cavity defined inside the body by the inner surface and the acoustic opening. The earphone body further includes an acoustic impedance branch, such as a waveguide, that reduces a magnitude of a resonance at a first resonance frequency for an occluded ear canal defined by the cavity of the earphone assembly and an ear canal of a user when the earphone is at least partially inserted into the ear canal. The first electro-acoustic transducer is disposed at the inner surface of the earphone body and is configured to generate a first acoustic signal. The second electro-acoustic transducer is disposed along a length of the acoustic impedance branch and is configured to generate a second acoustic signal.

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Wellesley, MA, United States of America

Lei Cheng