GB201200973D0 - Low frequency acoustic source - Google Patents

Low frequency acoustic source

Info

Publication number
GB201200973D0
GB201200973D0 GB201200973A GB201200973A GB201200973D0 GB 201200973 D0 GB201200973 D0 GB 201200973D0 GB 201200973 A GB201200973 A GB 201200973A GB 201200973 A GB201200973 A GB 201200973A GB 201200973 D0 GB201200973 D0 GB 201200973D0
Authority
GB
United Kingdom
Prior art keywords
acoustically
sealable
test volume
low frequency
input
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.)
Withdrawn
Application number
GB201200973A
Other versions
GB2492429A (en
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.)
Cirrus Logic International UK Ltd
Original Assignee
Wolfson Microelectronics PLC
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 Wolfson Microelectronics PLC filed Critical Wolfson Microelectronics PLC
Priority to GB201200973A priority Critical patent/GB2492429A/en
Publication of GB201200973D0 publication Critical patent/GB201200973D0/en
Priority to PCT/GB2012/051536 priority patent/WO2013001316A1/en
Publication of GB2492429A publication Critical patent/GB2492429A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/004—Monitoring arrangements; Testing arrangements for microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The acoustic test apparatus comprises an input 90 for receiving electrical signals; first and second acoustically sealable enclosures 44, 48; an acoustically sealable test volume 46, located between the first and second acoustically sealed enclosures; a first electroacoustic transducer 50 is mounted between the first acoustically sealable enclosure 44 and the acoustically sealable test volume 46; and a second electroacoustic transducer 60 is mounted between the second acoustically sealable enclosure 48 and the acoustically sealable test volume 46. The input is connected to the first and second electroacoustic transducers such that an electrical signal from the input causes each of the first and second electroacoustic transducers to generate variations in sound pressure in the test volume, and wherein said variations in sound pressure generated by the first and second electroacoustic transducers are in phase with each other.
GB201200973A 2011-06-30 2012-01-20 Low frequency acoustic source for acoustic testing Withdrawn GB2492429A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB201200973A GB2492429A (en) 2012-01-20 2012-01-20 Low frequency acoustic source for acoustic testing
PCT/GB2012/051536 WO2013001316A1 (en) 2011-06-30 2012-06-29 Test arrangement for microphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201200973A GB2492429A (en) 2012-01-20 2012-01-20 Low frequency acoustic source for acoustic testing

Publications (2)

Publication Number Publication Date
GB201200973D0 true GB201200973D0 (en) 2012-03-07
GB2492429A GB2492429A (en) 2013-01-02

Family

ID=45840741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201200973A Withdrawn GB2492429A (en) 2011-06-30 2012-01-20 Low frequency acoustic source for acoustic testing

Country Status (1)

Country Link
GB (1) GB2492429A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107036773A (en) * 2015-07-28 2017-08-11 苏州井利电子股份有限公司 A kind of horn vibration test placement tool
CN105979462A (en) * 2015-11-16 2016-09-28 乐视致新电子科技（天津）有限公司 Test processing method and device based on microphone
CN110099348A (en) * 2018-01-29 2019-08-06 京元电子股份有限公司 Has the microphone element test holder structure of more acoustical generators

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5226326A (en) * 1991-05-31 1993-07-13 Environmental Stress Screening Corp. Vibration chamber
CA2276693A1 (en) * 1999-06-28 2000-12-28 Frederic Laville Vibration testing system and method using acoustical waves
US6484580B2 (en) * 2000-03-15 2002-11-26 Ball Aerospace & Technologies Corp. In situ testing of a satellite or other object prior to development

Also Published As

Publication number Publication date
GB2492429A (en) 2013-01-02

Similar Documents

Publication Publication Date Title
GB2519475A (en) Systems and methods for a vibrating input device
MX2022003326A (en) Acoustic output device.
GB201208852D0 (en) Vibratory panel devices and methods for controlling vibratory panel devices
GB2551916A (en) Microphone unit comprising integrated speech analysis
WO2014144112A3 (en) Acoustic transducers
GB201116847D0 (en) Processing audio signals
GB2511441A (en) Electronically orbited speaker system
MX2017012806A (en) Differential sound reproduction.
CN107980225A8 (en) Use the device and method of drive signal drive the speaker array
WO2013166567A8 (en) Method for the transmission of data between devices over sound waves
WO2012055413A3 (en) Ultrasonic flow meter with zero impedance measuring electronics
IN2012DE00206A (en)
GB201200973D0 (en) Low frequency acoustic source
WO2013109368A3 (en) Pad-type device case providing enhanced audio functionality and output
GB2506978A8 (en) Acoustic transducer
GB2482204B (en) Loudspeaker
CN203968340U (en) A kind of flat panel loudspeaker
CN204498348U (en) A kind of sound equipment
CN204465835U (en) Hyperline type list speakers low frequencies audio amplifier
CN104080025A (en) Loudspeaker system and low frequency control method of loudspeaker system
US9420364B2 (en) Display device with sound generation regions having different areas
WO2015112608A3 (en) Tone generation
GB2487812A (en) A sounder for mobile apparatus
JP2011072780A5 (en)
EP2913644A3 (en) Portable device for measuring the acoustic reflectivity coefficient in situ

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)