FR2498404B3 - - Google Patents

Info

Publication number: FR2498404B3
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.): Expired

Application number

FR8101006A

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.)

Individual

Original Assignee

Individual

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.)

1981-01-20

Filing date

1981-01-20

Publication date

1984-08-03

1981-01-20 Application filed by Individual filed Critical Individual

1981-01-20 Priority to FR8101006A priority Critical patent/FR2498404A1/en

1982-07-23 Publication of FR2498404A1 publication Critical patent/FR2498404A1/en

1984-08-03 Application granted granted Critical

1984-08-03 Publication of FR2498404B3 publication Critical patent/FR2498404B3/fr

Status Granted 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
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

FR8101006A 1981-01-20 1981-01-20 Electroacoustic transducer drive assembly - has element attached to loudspeaker to form conical chamber contg. moulded phase corrector Granted FR2498404A1 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
FR8101006A FR2498404A1 (en)	1981-01-20	1981-01-20	Electroacoustic transducer drive assembly - has element attached to loudspeaker to form conical chamber contg. moulded phase corrector

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR8101006A FR2498404A1 (en)	1981-01-20	1981-01-20	Electroacoustic transducer drive assembly - has element attached to loudspeaker to form conical chamber contg. moulded phase corrector

Publications (2)

Publication Number	Publication Date
FR2498404A1 FR2498404A1 (en)	1982-07-23
FR2498404B3 true FR2498404B3 (en)	1984-08-03

Family

ID=9254335

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8101006A Granted FR2498404A1 (en)	1981-01-20	1981-01-20	Electroacoustic transducer drive assembly - has element attached to loudspeaker to form conical chamber contg. moulded phase corrector

Country Status (1)

Country	Link
FR (1)	FR2498404A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2714788A1 (en) *	1993-12-31	1995-07-07	Sono Light Diffusion	White noise emitter esp. for detection and analysis of pulmonary noise

1981
- 1981-01-20 FR FR8101006A patent/FR2498404A1/en active Granted

Also Published As

Publication number	Publication date
FR2498404A1 (en)	1982-07-23

Publication	Publication Date	Title
FR2498484B1 (en)	1984-12-28
FR2498522B1 (en)	1985-04-26
FR2501868B1 (en)	1985-03-15
FR2498389B1 (en)	1984-11-09
FR2498839B1 (en)	1984-11-09
DE3279121D1 (en)	1988-11-24
FR2497551B3 (en)	1983-10-28
FR2500752B1 (en)	1984-12-28
FR2498636B1 (en)	1984-05-04
DE3120569C2 (en)	1983-12-15
FR2501124B1 (en)	1985-02-08
FR2515845B3 (en)	1984-09-14
FR2498838B3 (en)	1984-09-28
FR2499627B3 (en)	1984-10-12
FR2498431B1 (en)	1984-01-27
CH659185B (en)	1987-01-15
FR2498038B1 (en)	1984-06-29
CH655643B (en)	1986-05-15
FR2499774B1 (en)	1983-04-15
FR2498120B1 (en)	1983-08-05
FR2500970B1 (en)	1984-08-10
FR2499634B3 (en)	1983-11-18
FR2497741B3 (en)	1983-10-21
CH655649B (en)	1986-05-15
FR2498786B1 (en)	1984-07-06

Legal Events

Date	Code	Title	Description
1986-11-21	ST	Notification of lapse