CH491575A - Microphone for hearing aids - Google Patents

Microphone for hearing aids

Info

Publication number: CH491575A
Authority: CH; Switzerland
Prior art keywords: microphone; hearing aids; hearing; aids
Prior art date: 1967-06-05

Application number

CH671468A

Other languages

German (de)

Inventor

Hassler Otto

Wittkowski Johannes

Original Assignee

Willco Gmbh

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.)

1967-06-05

Filing date

1968-05-06

Publication date

1970-05-31

1968-05-06 Application filed by Willco Gmbh filed Critical Willco Gmbh

1970-05-31 Publication of CH491575A publication Critical patent/CH491575A/en

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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

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)
Piezo-Electric Transducers For Audible Bands (AREA)
Details Of Audible-Bandwidth Transducers (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

CH671468A 1967-06-05 1968-05-06 Microphone for hearing aids CH491575A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DEW44116A DE1277347B (en)	1967-06-05	1967-06-05	Microphone for hearing aids

Publications (1)

Publication Number	Publication Date
CH491575A true CH491575A (en)	1970-05-31

Family

ID=7603933

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH671468A CH491575A (en)	1967-06-05	1968-05-06	Microphone for hearing aids

Country Status (9)

Country	Link
US (1)	US3662124A (en)
AT (1)	AT309551B (en)
BE (1)	BE716073A (en)
CH (1)	CH491575A (en)
DE (1)	DE1277347B (en)
ES (1)	ES353937A1 (en)
FR (1)	FR1568515A (en)
GB (1)	GB1180865A (en)
NL (1)	NL6807102A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1278009A (en) *	1970-10-22	1972-06-14	Standard Telephones Cables Ltd	Microphone
US3749853A (en) *	1972-05-18	1973-07-31	Zenith Radio Corp	Hearing aid with directional microphone system
NL7306005A (en) *	1973-05-01	1974-11-05
US3963881A (en) *	1973-05-29	1976-06-15	Thermo Electron Corporation	Unidirectional condenser microphone
US4903249A (en) *	1988-03-24	1990-02-20	Nelson Industries	Rigid foraminous microphone probe for acoustic measurement in turbulent flow
US6031922A (en) *	1995-12-27	2000-02-29	Tibbetts Industries, Inc.	Microphone systems of reduced in situ acceleration sensitivity
US7881486B1 (en) *	1996-12-31	2011-02-01	Etymotic Research, Inc.	Directional microphone assembly
US5878147A (en)	1996-12-31	1999-03-02	Etymotic Research, Inc.	Directional microphone assembly
US6151399A (en)	1996-12-31	2000-11-21	Etymotic Research, Inc.	Directional microphone system providing for ease of assembly and disassembly
ATE548862T1 (en)	2000-10-05	2012-03-15	Etymotic Res Inc	DIRECTIONAL MICROPHONE ASSEMBLY
US7894618B2 (en) *	2006-07-28	2011-02-22	Symphony Acoustics, Inc.	Apparatus comprising a directionality-enhanced acoustic sensor
US7832080B2 (en) *	2007-10-11	2010-11-16	Etymotic Research, Inc.	Directional microphone assembly
US8630435B2 (en) *	2008-08-08	2014-01-14	Nokia Corporation	Apparatus incorporating an adsorbent material, and methods of making same
KR101786434B1 (en)	2014-07-31	2017-10-17	쓰리엠 이노베이티브 프로퍼티즈 캄파니	Water resistant acoustic port in ear-mounted hearing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL67077C (en) *	1945-12-03

1967
- 1967-06-05 DE DEW44116A patent/DE1277347B/en active Pending
1968
- 1968-04-16 AT AT371068A patent/AT309551B/en not_active IP Right Cessation
- 1968-04-29 GB GB20205/68A patent/GB1180865A/en not_active Expired
- 1968-05-06 CH CH671468A patent/CH491575A/en not_active IP Right Cessation
- 1968-05-16 ES ES353937A patent/ES353937A1/en not_active Expired
- 1968-05-20 NL NL6807102A patent/NL6807102A/xx unknown
- 1968-05-31 FR FR1568515D patent/FR1568515A/fr not_active Expired
- 1968-06-04 BE BE716073D patent/BE716073A/xx unknown
1970
- 1970-09-25 US US75548A patent/US3662124A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US3662124A (en)	1972-05-09
ES353937A1 (en)	1969-10-16
FR1568515A (en)	1969-05-23
GB1180865A (en)	1970-02-11
AT309551B (en)	1973-08-27
BE716073A (en)	1968-11-04
NL6807102A (en)	1968-12-06
DE1277347B (en)	1968-09-12

Publication	Publication Date	Title
AT266235B (en)	1968-11-11	Hearing aid
DK135140B (en)	1977-03-07	Hearing aid.
CH436393A (en)	1967-05-31	Ear hearing aid device
DK136880B (en)	1977-12-05	Hearing aid.
FR1397060A (en)	1965-04-23	Digital microphone
AT194933B (en)	1958-01-25	Hearing aid
AT309551B (en)	1973-08-27	Microphone for hearing aids
DK130610B (en)	1975-03-10	Hearing aid.
NL146356B (en)	1975-06-16	SPEAKER BOX.
AT316669B (en)	1974-07-25	microphone
AT276515B (en)	1969-11-25	Electrodynamic microphone
CH454229A (en)	1968-04-15	Hearing aid
CH423884A (en)	1966-11-15	Electrostatic microphone arrangement
NL142309C (en)	1974-05-15	HEARING AID.
CH473515A (en)	1969-05-31	Microphone
NL153060B (en)	1977-04-15	HEARING AID.
CH532876A (en)	1973-01-15	Hearing aid
AT264615B (en)	1968-09-10	Condenser microphone
FR1516687A (en)	1968-03-08	Electro-dynamic microphone
FR1119908A (en)	1956-06-27	Electro-dynamic speaker
DK119517B (en)	1971-01-18	Hearing aid.
AT252344B (en)	1967-02-10	Hearing aid
AT184623B (en)	1956-02-10	Electroacoustic device for the hearing impaired
AT290645B (en)	1971-06-11	Mouthpiece for microphones
ES98184Y (en)	1964-03-01	Miniature hearing aid

Legal Events

Date	Code	Title	Description
1975-12-15	PL	Patent ceased