WO2014100573A2 - Dispositifs audio ayant une annulation de bruit d'actionneurs en polymère électroactif - Google Patents

Dispositifs audio ayant une annulation de bruit d'actionneurs en polymère électroactif Download PDF

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Publication number
WO2014100573A2
WO2014100573A2 PCT/US2013/076893 US2013076893W WO2014100573A2 WO 2014100573 A2 WO2014100573 A2 WO 2014100573A2 US 2013076893 W US2013076893 W US 2013076893W WO 2014100573 A2 WO2014100573 A2 WO 2014100573A2
Authority
WO
WIPO (PCT)
Prior art keywords
electroactive polymer
signal
electrical signal
phase
noise
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2013/076893
Other languages
English (en)
Other versions
WO2014100573A8 (fr
WO2014100573A3 (fr
Inventor
Roger N. Hitchcock
David W. HUMPHREYS
Arthur H. MUIR
Alireza Zarrabi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Covestro Deutschland AG
Original Assignee
Bayer MaterialScience AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Publication of WO2014100573A2 publication Critical patent/WO2014100573A2/fr
Publication of WO2014100573A8 publication Critical patent/WO2014100573A8/fr
Publication of WO2014100573A3 publication Critical patent/WO2014100573A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
    • A61F11/145—Protective devices for the ears external, e.g. earcaps or earmuffs electric, e.g. for active noise reduction
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3223—Materials, e.g. special compositions or gases
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/05—Noise reduction with a separate noise microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone

Definitions

  • Conventional acoustic headphones include a pah of ear cups intercoupled by a headband.
  • the ear cups include loudspeakers mounted within a housing portion of the ear cups and held in place close to a user's ears.
  • the headphones include electrical wires to connect the loudspeakers to an audio signal source such as an audio amplifier, radio, CD player, portable media player, computer, tablet, mobile device, or gaming console.
  • Some versions of conventional, headphones also include electronic circuits for signal conditioning and processing the acoustic signal received from the audio signal source. Versions of audio headphones that do not include a headband and. are specifically designed to be placed directly in the user's ear are also known as earphones or colloquially as earbuds.
  • Active noise-canceling headphones add an extra level of noise reduction by actively erasing lower-frequency sound waves. Noise-canceling headphones accomplish this by creating their own sound waves that imitate the incoming ambient noise sound waves except the headphone's sound waves are 180 degrees out of phase with the incoming ambient noise sound waves.
  • noise-canceling electronic circuitry placed in the ear cup to sense the input from the microphone and generate an electrical impression of the noise, noting the frequency and amplitude of the incoming wave. The electrical circuitry then creates a new wave that is 180 degrees out of phase with the waves associated with the noise.
  • a conventional diaphragm speaker that creates the anti- sound created by the noise-canceling circuitry is fed into the headphones' speakers along with the normal audio. The anti-sound erases the noise by destructive interference, but does not affect the desired sound waves in the normal audio.
  • a battery adds energy to the system to produce the noise-canceling effect.
  • a noise reduction system comprises a plurality of electroactive polymer transducers driven as described above and arranged to provide noise reduction in a volume of space where there is ambient background noise.
  • the individual transducers may be controlled individually, in multiple groups, or as a single group.
  • the noise reduction system may also include a plurality of microphones for better spatial optimization.
  • electroactive polymer modules 200 include the ability to generate low frequency vibrations inside the ear cup housings that can be felt substantially immediately by the user, hi addition, electroactive polymer modules 200 consume low power, and are well suited for customizable design and performance options.
  • the electroactive polymer module 200 is representative of those developed by Artificial Muscle, Inc., of Sunnyvale, CA, USA.
  • many of the design variables of the electroactive polymer module 200 may be fixed by the needs of module integrators while other variables (e.g., number of dielectric layers, operating voltage) may be constrained by cost. Because actuator geometry - the allocation of footprint to rigid supporting structure versus active dielectric - does not impact cost much, it may be a reasonable way to tailor performance of the electroactive polymer module 200 to an application where the module 200 is integrated with a headphone device, as shown in FIGS. 6-8.
  • the cap section will be sized to produce a perimeter of sufficient length to adequately distribute stress applied to the material.
  • the ratio of size of the cap to the diameter of the frame holding the eleciroactive polymer layers may vary.
  • the size of disc, square, etc. employed for the cap will be larger under higher stress/force application.
  • the relative truncation of the structure is of further importance to reduce volume the aggregate volume or space the transducer occupies in use, for a given amount of pre-stretch to the eleciroactive polymer layers.
  • the cap or diaphragm 642 element may serve as an active component (such as a valve seat, etc. in a given system).
  • Single-sided frustum transducers are within the contemplated scope of the present invention as well as double-sided structures.
  • single sided devices employ any of a spring interfacing with, the cap (e.g., a coil, a constant force or roll spring, leaf spring, etc.), air or fluid pressure, magnetic attraction, a weight (so that gravity provides preload to the system), or a combination of any of these means or others.
  • FIG, 26 illustrates a cross-sectional side view of a monolithic diaphragm device 1130 comprising a monolithic polymer 1131 before deflection in accordance with one embodiment of the present invention.
  • the polymer 1131 is attached to a frame 1132.
  • the frame 1132 includes apertures 1133A and 1133B that allow deflection of polymer portions 1131A and 1131B perpendicular to the area of the apertures 1133Aand 1133B, respecti vely.
  • the diaphragm device 1130 comprises electrodes 113 A and 1134B attached on either side of the portion 1131 A to provide a voltage difference across the portion 1131A.

Landscapes

  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Otolaryngology (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Psychology (AREA)
  • Biophysics (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Headphones And Earphones (AREA)

Abstract

La présente invention porte sur un système d'annulation de bruit et un procédé pour écouteur sur l'oreille. Le système et le procédé fournissent un microphone configuré pour détecter un premier signal acoustique généré par une source externe à l'écouteur et pour produire un premier signal électrique correspondant au premier signal acoustique, le premier signal électrique ayant une amplitude, une fréquence et une phase représentatives du premier signal acoustique. Un actionneur en polymère électroactif est électriquement couplé au microphone et configuré pour recevoir un second signal électrique ayant une amplitude et une fréquence sensiblement égales à l'amplitude et à la fréquence du premier signal électrique et une phase qui est hors de phase à 180 degrés avec le premier signal électrique. L'actionneur en polymère électroactif est configuré pour se déplacer en réponse au second signal électrique et produire un second signal acoustique ayant une amplitude et une fréquence sensiblement égales au premier signal acoustique et une phase qui est hors de phase à environ 180 degrés avec le premier signal acoustique.
PCT/US2013/076893 2012-12-21 2013-12-20 Dispositifs audio ayant une annulation de bruit d'actionneurs en polymère électroactif Ceased WO2014100573A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261740614P 2012-12-21 2012-12-21
US61/740,614 2012-12-21

Publications (3)

Publication Number Publication Date
WO2014100573A2 true WO2014100573A2 (fr) 2014-06-26
WO2014100573A8 WO2014100573A8 (fr) 2014-07-17
WO2014100573A3 WO2014100573A3 (fr) 2014-08-14

Family

ID=49956447

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PCT/US2013/076893 Ceased WO2014100573A2 (fr) 2012-12-21 2013-12-20 Dispositifs audio ayant une annulation de bruit d'actionneurs en polymère électroactif

Country Status (2)

Country Link
TW (1) TW201443872A (fr)
WO (1) WO2014100573A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016099993A1 (fr) * 2014-12-15 2016-06-23 Honeywell International Inc. Oreillette de réduction du bruit active avec réseau de haut-parleurs
US9679551B1 (en) 2016-04-08 2017-06-13 Baltic Latvian Universal Electronics, Llc Noise reduction headphone with two differently configured speakers
FR3052621A1 (fr) * 2016-06-13 2017-12-15 Elno Dispositif acoustique de type casque
US10206031B2 (en) 2015-04-09 2019-02-12 Dolby Laboratories Licensing Corporation Switching to a second audio interface between a computer apparatus and an audio apparatus
CN109996497A (zh) * 2016-11-22 2019-07-09 皇家飞利浦有限公司 超声设备和用于在这样的设备中使用的声学部件
FR3105550A1 (fr) * 2019-12-18 2021-06-25 Christian Koenig Dispositif d'amelioration de la qualite de perception d'une image sonore dans un local non traite acoustiquement
US11195506B2 (en) 2018-12-03 2021-12-07 Toyota Motor Engineering & Manufacturing North America, Inc. Sound-modulating windows

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7306650B2 (ja) * 2019-05-20 2023-07-11 日東電工株式会社 アクティブノイズコントロールシステム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3502594B2 (ja) * 2000-05-24 2004-03-02 松下電器産業株式会社 車輌用能動騒音低減装置
US7521847B2 (en) * 2005-03-21 2009-04-21 Artificial Muscle, Inc. High-performance electroactive polymer transducers
JP2008141380A (ja) * 2006-11-30 2008-06-19 Hyper Drive Corp 電場応答性高分子を用いた振動素子
EP2666072A4 (fr) * 2011-01-18 2017-02-22 Parker-Hannifin Corp Appareil, système et procédé pour actionneur sans cadre
CA2839339A1 (fr) * 2011-06-16 2012-12-20 Bayer Intellectual Property Gmbh Dispositifs audio ayant des actionneurs en polymere electroactif

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016099993A1 (fr) * 2014-12-15 2016-06-23 Honeywell International Inc. Oreillette de réduction du bruit active avec réseau de haut-parleurs
US9786261B2 (en) 2014-12-15 2017-10-10 Honeywell International Inc. Active noise reduction earcup with speaker array
US10206031B2 (en) 2015-04-09 2019-02-12 Dolby Laboratories Licensing Corporation Switching to a second audio interface between a computer apparatus and an audio apparatus
US9679551B1 (en) 2016-04-08 2017-06-13 Baltic Latvian Universal Electronics, Llc Noise reduction headphone with two differently configured speakers
FR3052621A1 (fr) * 2016-06-13 2017-12-15 Elno Dispositif acoustique de type casque
CN109996497A (zh) * 2016-11-22 2019-07-09 皇家飞利浦有限公司 超声设备和用于在这样的设备中使用的声学部件
US11195506B2 (en) 2018-12-03 2021-12-07 Toyota Motor Engineering & Manufacturing North America, Inc. Sound-modulating windows
FR3105550A1 (fr) * 2019-12-18 2021-06-25 Christian Koenig Dispositif d'amelioration de la qualite de perception d'une image sonore dans un local non traite acoustiquement

Also Published As

Publication number Publication date
WO2014100573A8 (fr) 2014-07-17
TW201443872A (zh) 2014-11-16
WO2014100573A3 (fr) 2014-08-14

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