FR2262893A1 - - Google Patents

Info

Publication number: FR2262893A1
Authority: FR; France
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.): Granted

Application number

FR7505835A

Other languages

Other versions

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.)

ALLISON ACOUSTICS Inc

Original Assignee

ALLISON ACOUSTICS 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.)

1974-03-01

Filing date

1975-02-25

Publication date

1975-09-26

1975-02-25 Application filed by ALLISON ACOUSTICS Inc filed Critical ALLISON ACOUSTICS Inc

1975-09-26 Publication of FR2262893A1 publication Critical patent/FR2262893A1/fr

1982-10-01 Application granted granted Critical

1982-10-01 Publication of FR2262893B1 publication Critical patent/FR2262893B1/fr

Status Expired legal-status Critical Current

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
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
- 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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers

Landscapes

Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

FR7505835A 1974-03-01 1975-02-25 Expired FR2262893B1 (zh)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US44706574A	1974-03-01	1974-03-01

Publications (2)

Publication Number	Publication Date
FR2262893A1 true FR2262893A1 (zh)	1975-09-26
FR2262893B1 FR2262893B1 (zh)	1982-10-01

Family

ID=23774870

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7505835A Expired FR2262893B1 (zh)	1974-03-01	1975-02-25

Country Status (10)

Country	Link
JP (1)	JPS601798B2 (zh)
BE (1)	BE825962A (zh)
CA (1)	CA1012895A (zh)
CH (1)	CH591198A5 (zh)
DE (1)	DE2507377A1 (zh)
ES (1)	ES435177A1 (zh)
FR (1)	FR2262893B1 (zh)
GB (1)	GB1500199A (zh)
IT (1)	IT1030246B (zh)
NL (1)	NL7502223A (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS55144475U (zh) *	1979-04-02	1980-10-16
CN103796129A (zh) *	2012-11-05	2014-05-14	曾山	一种同轴线阵列音箱
CN104113800B (zh) *	2014-07-25	2018-07-27	无锡杰夫电声股份有限公司	具有高音补偿的哑铃式倒相音箱

1975
- 1975-02-20 DE DE19752507377 patent/DE2507377A1/de not_active Withdrawn
- 1975-02-24 CA CA220,644A patent/CA1012895A/en not_active Expired
- 1975-02-25 NL NL7502223A patent/NL7502223A/xx not_active Application Discontinuation
- 1975-02-25 FR FR7505835A patent/FR2262893B1/fr not_active Expired
- 1975-02-25 BE BE153723A patent/BE825962A/xx not_active IP Right Cessation
- 1975-02-27 GB GB823775A patent/GB1500199A/en not_active Expired
- 1975-02-28 ES ES435177A patent/ES435177A1/es not_active Expired
- 1975-02-28 JP JP2494775A patent/JPS601798B2/ja not_active Expired
- 1975-02-28 IT IT6752375A patent/IT1030246B/it active
- 1975-02-28 CH CH257575A patent/CH591198A5/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
IT1030246B (it)	1979-03-30
ES435177A1 (es)	1976-12-01
FR2262893B1 (zh)	1982-10-01
DE2507377A1 (de)	1975-09-04
JPS601798B2 (ja)	1985-01-17
JPS50122925A (zh)	1975-09-26
NL7502223A (nl)	1975-09-03
AU7827275A (en)	1976-08-19
CA1012895A (en)	1977-06-28
GB1500199A (en)	1978-02-08
BE825962A (fr)	1975-06-16
CH591198A5 (zh)	1977-09-15

Publication	Publication Date	Title
FR2272195B1 (zh)	1981-10-30
FR2264692A1 (zh)	1975-10-17
DK539974A (zh)	1976-04-16
FI752243A (zh)	1976-02-13
FR2262211B1 (zh)	1978-02-03
FI752860A (zh)	1976-04-16
DK81575A (zh)	1975-09-02
FR2262893B1 (zh)	1982-10-01
AU478138B2 (zh)	1976-06-03
FR2256802B1 (zh)	1978-09-29
AR198999Q (zh)	1974-07-31
AU1893276A (zh)	1977-01-20
CS169254B1 (zh)	1976-07-29
BG21427A1 (zh)	1976-07-20
BG20892A1 (zh)	1976-01-20
CH580869A5 (zh)	1976-10-15
BG21810A1 (zh)	1976-09-20
BG21805A1 (zh)	1976-09-20
BG21781A1 (zh)	1976-09-20
AU481877A (zh)	1975-10-02
AU481873A (zh)	1975-09-11
BG21432A1 (zh)	1976-07-20
BG20867A1 (zh)	1976-01-20
BG21426A1 (zh)	1976-07-20
BG21423A1 (zh)	1976-07-20

Legal Events

Date	Code	Title	Description
1991-12-27	ST	Notification of lapse