ATE16879T1 - ELECTROACOUSTIC SIGNALS. - Google Patents

ELECTROACOUSTIC SIGNALS.

Info

Publication number
ATE16879T1
ATE16879T1 AT83300910T AT83300910T ATE16879T1 AT E16879 T1 ATE16879 T1 AT E16879T1 AT 83300910 T AT83300910 T AT 83300910T AT 83300910 T AT83300910 T AT 83300910T AT E16879 T1 ATE16879 T1 AT E16879T1
Authority
AT
Austria
Prior art keywords
housing
aperture
intensity
change
shutter plate
Prior art date
Application number
AT83300910T
Other languages
German (de)
Inventor
Keith John Vickers
Allan George Carr
Original Assignee
Gen Electric Co 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 Gen Electric Co Plc filed Critical Gen Electric Co Plc
Application granted granted Critical
Publication of ATE16879T1 publication Critical patent/ATE16879T1/en

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
    • 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 

Abstract

An electro-acoustic transducer (2) mounted in a housing (5, 6) in which a volume control is provided by an aperture (7) in the front of the housing (5) and a rotatable shutter plate (11) which is mounted on the front of the housing (5) and which has a plurality of smaller apertures (14). The smaller apertures (14) are positioned in such a way that linear movement of the shutter plate (11) causes a logarithmic change in the exposure of the aperture (7) in the front of the housing (5) to give a logarithmic change in the intensity of the sound output such that the linear movement causes an apparent linear change in the intensity of sound as heard by a human ear.
AT83300910T 1982-02-26 1983-02-22 ELECTROACOUSTIC SIGNALS. ATE16879T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8205748 1982-02-26
EP83300910A EP0087908B1 (en) 1982-02-26 1983-02-22 Electro-acoustic calling devices

Publications (1)

Publication Number Publication Date
ATE16879T1 true ATE16879T1 (en) 1985-12-15

Family

ID=10528646

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83300910T ATE16879T1 (en) 1982-02-26 1983-02-22 ELECTROACOUSTIC SIGNALS.

Country Status (15)

Country Link
EP (1) EP0087908B1 (en)
JP (1) JPS58159099A (en)
AT (1) ATE16879T1 (en)
AU (1) AU549945B2 (en)
CA (1) CA1215163A (en)
DE (1) DE3361370D1 (en)
DK (1) DK78383A (en)
GB (1) GB2115648B (en)
HK (1) HK79485A (en)
IL (1) IL67935A (en)
KE (1) KE3554A (en)
MY (1) MY8600266A (en)
NZ (1) NZ203265A (en)
ZA (1) ZA831054B (en)
ZW (1) ZW5283A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168875A (en) * 1984-12-19 1986-06-25 Philips Electronic Associated Electroacoustic calling device
AT400910B (en) * 1994-06-16 1996-04-25 Akg Akustische Kino Geraete ACOUSTIC RESISTANCE, ESPECIALLY FOR ELECTROACOUSTIC TRANSDUCERS
US6124992A (en) * 1995-02-08 2000-09-26 Seagate Technology Llc System and method for reconstructing a signal wave in a partial response read channel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1884724A (en) * 1923-06-19 1932-10-25 Western Electric Co Sound box for phonic diaphragms
US3826333A (en) * 1973-03-21 1974-07-30 J Buckwalter Baffle for a sound producing device
FR2273335B1 (en) * 1974-05-31 1979-05-25 Klaxon Sa
GB2082018B (en) * 1980-07-31 1983-10-12 Standard Telephones Cables Ltd Telephone sounder

Also Published As

Publication number Publication date
GB2115648B (en) 1985-03-13
AU549945B2 (en) 1986-02-20
JPS58159099A (en) 1983-09-21
ZA831054B (en) 1984-03-28
DK78383D0 (en) 1983-02-22
IL67935A0 (en) 1983-06-15
EP0087908A1 (en) 1983-09-07
CA1215163A (en) 1986-12-09
DE3361370D1 (en) 1986-01-16
GB2115648A (en) 1983-09-07
IL67935A (en) 1986-04-29
AU1149283A (en) 1983-09-01
MY8600266A (en) 1986-12-31
NZ203265A (en) 1985-04-30
KE3554A (en) 1985-08-30
ZW5283A1 (en) 1983-05-11
DK78383A (en) 1983-08-27
GB8305038D0 (en) 1983-03-30
HK79485A (en) 1985-10-25
EP0087908B1 (en) 1985-12-04

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