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1. WO2020118006 - EARPHONE HAVING ACOUSTIC IMPEDANCE BRANCH FOR DAMPED EAR CANAL RESONANCE AND ACOUSTIC SIGNAL COUPLING

Publication Number WO/2020/118006
Publication Date 11.06.2020
International Application No. PCT/US2019/064595
International Filing Date 05.12.2019
IPC
H04R 1/28 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 1/10 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
10Earpieces; Attachments therefor
H04R 1/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
26Spatial arrangement of separate transducers responsive to two or more frequency ranges
CPC
G10K 11/17823
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1781characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
17821characterised by the analysis of the input signals only
17823Reference signals, e.g. ambient acoustic environment
G10K 11/17861
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1785Methods, e.g. algorithms; Devices
17861using additional means for damping sound, e.g. using sound absorbing panels
G10K 11/17881
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1787General system configurations
17879using both a reference signal and an error signal
17881the reference signal being an acoustic signal, e.g. recorded with a microphone
G10K 2210/1081
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
2210Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
10Applications
108Communication systems, e.g. where useful sound is kept and noise is cancelled
1081Earphones, e.g. for telephones, ear protectors or headsets
G10K 2210/3044
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
2210Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
30Means
301Computational
3044Phase shift, e.g. complex envelope processing
G10K 2210/3224
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
2210Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
30Means
321Physical
3224Passive absorbers
Applicants
  • BOSE CORPORATION [US]/[US]
Inventors
  • DOMINIJANNI, Andrew D.
  • STRUZIK, Ryan C.
  • CHENG, Lei
Agents
  • ANDREASEN, David A.
Priority Data
16/210,78405.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EARPHONE HAVING ACOUSTIC IMPEDANCE BRANCH FOR DAMPED EAR CANAL RESONANCE AND ACOUSTIC SIGNAL COUPLING
(FR) ÉCOUTEUR AYANT UNE BRANCHE D'IMPÉDANCE ACOUSTIQUE POUR RÉSONANCE DE CANAL AUDITIF AMORTI ET COUPLAGE DE SIGNAL ACOUSTIQUE
Abstract
(EN)
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.
(FR)
La présente invention concerne un écouteur comprenant un ensemble écouteur et des premier et second transducteurs électroacoustiques. L'ensemble écouteur comprend un corps d'écouteur ayant une surface interne, une ouverture acoustique et une cavité définie à l'intérieur du corps par la surface interne et l'ouverture acoustique. Le corps d'écouteur comprend en outre une branche d'impédance acoustique, telle qu'un guide d'ondes, qui réduit une amplitude d'une résonance à une première fréquence de résonance pour un canal auriculaire occlus défini par la cavité de l'ensemble écouteur et un conduit auditif d'un utilisateur lorsque l'écouteur est au moins partiellement inséré dans le conduit auditif. Le premier transducteur électro-acoustique est disposé au niveau de la surface interne du corps d'écouteur et est configuré pour générer un premier signal acoustique. Le second transducteur électroacoustique est disposé le long d'une longueur de la branche d'impédance acoustique et est configuré pour générer un second signal acoustique.
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