EP0127247A3 - Tunable response transducer - Google Patents

Tunable response transducer Download PDF

Info

Publication number
EP0127247A3
EP0127247A3 EP84300273A EP84300273A EP0127247A3 EP 0127247 A3 EP0127247 A3 EP 0127247A3 EP 84300273 A EP84300273 A EP 84300273A EP 84300273 A EP84300273 A EP 84300273A EP 0127247 A3 EP0127247 A3 EP 0127247A3
Authority
EP
European Patent Office
Prior art keywords
diaphragm
opening
transducer
response
frame
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Withdrawn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
EP84300273A
Other languages
German (de)
French (fr)
Other versions
EP0127247A2 (en
Inventor
William Neal House
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.)
Harman International Industries Inc
Original Assignee
Harman International Industries Inc
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
Priority to US49706283A priority Critical
Priority to US497062 priority
Application filed by Harman International Industries Inc filed Critical Harman International Industries Inc
Publication of EP0127247A2 publication Critical patent/EP0127247A2/en
Publication of EP0127247A3 publication Critical patent/EP0127247A3/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00Transducers of moving-armature or moving-core type
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only

Abstract

A tunable response transducer (20) includes a frame (22) providing an opening (24) covered by a diaphragm and a motor (50, 52, 54) coupled to the diaphragm to cause motion of the diaphragm in response to motor action. A cavity (66) defined behind the diaphragm is vented through a second opening (26) provided in the frame. Venting through the sec­ ond opening is controlled by a valve mechanism (40, 42, 44, 46) which is adjustable to vary selectively the damping of the frequency response characteristic of the transducer in the region of its principal resonant frequency.
EP84300273A 1983-05-23 1984-01-17 Tunable response transducer Withdrawn EP0127247A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US49706283A true 1983-05-23 1983-05-23
US497062 1983-05-23

Publications (2)

Publication Number Publication Date
EP0127247A2 EP0127247A2 (en) 1984-12-05
EP0127247A3 true EP0127247A3 (en) 1986-02-05

Family

ID=23975307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84300273A Withdrawn EP0127247A3 (en) 1983-05-23 1984-01-17 Tunable response transducer

Country Status (2)

Country Link
EP (1) EP0127247A3 (en)
JP (1) JPS59216397A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5166984A (en) * 1991-11-06 1992-11-24 Hsiao Yu Teng Loudspeaker
US20170164115A1 (en) * 2015-12-04 2017-06-08 Sonion Nederland B.V. Balanced armature receiver with bi-stable balanced armature

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1646628A (en) * 1927-10-25 James g
GB670868A (en) * 1950-05-11 1952-04-23 Machiel De Vries A filter for sound vibrations and a microphone and telephone provided therewith
DE1076182B (en) * 1957-02-21 1960-02-25 F & H Schumann G M B H A filter assembly for electro-acoustic transducer
DE1437376A1 (en) * 1963-10-04 1968-10-24 Akg Akustische Kino Geraete Frictional resistance for microphones having a variable directional characteristic and / or variable frequency response
FR2201603A1 (en) * 1972-09-29 1974-04-26 Ericsson Telefon Ab L M
DE2547925A1 (en) * 1974-11-13 1976-05-20 Komatsu Nakamura Headphone
US3999020A (en) * 1975-10-29 1976-12-21 Koss Corporation Transducer with variable frequency response
GB2014017A (en) * 1977-12-29 1979-08-15 Seiko Instr & Electronics Electro-magnetic acoustic transducer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1646628A (en) * 1927-10-25 James g
GB670868A (en) * 1950-05-11 1952-04-23 Machiel De Vries A filter for sound vibrations and a microphone and telephone provided therewith
DE1076182B (en) * 1957-02-21 1960-02-25 F & H Schumann G M B H A filter assembly for electro-acoustic transducer
DE1437376A1 (en) * 1963-10-04 1968-10-24 Akg Akustische Kino Geraete Frictional resistance for microphones having a variable directional characteristic and / or variable frequency response
FR2201603A1 (en) * 1972-09-29 1974-04-26 Ericsson Telefon Ab L M
DE2547925A1 (en) * 1974-11-13 1976-05-20 Komatsu Nakamura Headphone
US3999020A (en) * 1975-10-29 1976-12-21 Koss Corporation Transducer with variable frequency response
GB2014017A (en) * 1977-12-29 1979-08-15 Seiko Instr & Electronics Electro-magnetic acoustic transducer

Also Published As

Publication number Publication date
EP0127247A2 (en) 1984-12-05
JPS59216397A (en) 1984-12-06

Similar Documents

Publication Publication Date Title
EP0455203A2 (en) Dual outlet passage hearing aid transducer
DE3274945D1 (en) Electro-acoustic transducer with piezo-electric polymer
GB2232321B (en) An electro-acoustic transducer
MY131305A (en) Adaptive noise reduction circuit for a sound reproduction system
JPS57138423A (en) Engine mount device filled with fluid
WO1997000592A3 (en) Headset with user adjustable frequency response
CA2193331A1 (en) Microphone systems of reduced in situ acceleration sensitivity
EP0130400A3 (en) Microphone
WO1996006338A3 (en) Differential pressure transmitter
JPS62288741A (en) Mounting device for power unit
AU561327B2 (en) Bellowed electroacoustic transducer
AU7751281A (en) Diaphragm pump with squeezing action
GB8825174D0 (en) Electroacoustic transducer of the so-called electret type & method of making such transducer
WO2001099389A3 (en) Omnidirectional ultrasonic communication system
EP0710826A3 (en) High pressure sensor structure and method
EP0759606A3 (en) Active adaptive selective control system
JPS6162369A (en) Actuator using piezoelectric element
JPH0199400A (en) Method for adjusting frequency response characteristic of signal transmission and device therefor
DE3276599D1 (en) Speech processing system
GB2041699B (en) Diaphragm arrangement for electro-acoustic transducers
US3222463A (en) Sound transducer for dictating equipment
EP0373816A3 (en) Electroacoustic transducer apparatus
CA2041477A1 (en) Active acoustic attenuation system with overall modeling
CA2170025A1 (en) Active Control System for Noise Shaping
DE3139915A1 (en) Air-damped rubber mount

Legal Events

Date Code Title Description
AK Designated contracting states:

Designated state(s): DE GB

AK Designated contracting states:

Designated state(s): DE GB

18D Deemed to be withdrawn

Effective date: 19860801

RIN1 Inventor (correction)

Inventor name: HOUSE, WILLIAM NEAL