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Withdrawn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
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
Withdrawn legal-status Critical Current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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Reciprocating Pumps (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

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)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49706283A 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
EP3177037B1 (en) * 2015-12-04 2020-09-30 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 Filter arrangement for electro-acoustic converters
DE1437376A1 (en) * 1963-10-04 1968-10-24 Akg Akustische Kino Geraete Frictional resistance for microphones with changeable directional characteristics and / or changeable 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 Filter arrangement for electro-acoustic converters
DE1437376A1 (en) * 1963-10-04 1968-10-24 Akg Akustische Kino Geraete Frictional resistance for microphones with changeable directional characteristics and / or changeable 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

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE GB

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): DE GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860801

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HOUSE, WILLIAM NEAL