JPS5644629B2 - - Google Patents
Info
- Publication number
- JPS5644629B2 JPS5644629B2 JP12608674A JP12608674A JPS5644629B2 JP S5644629 B2 JPS5644629 B2 JP S5644629B2 JP 12608674 A JP12608674 A JP 12608674A JP 12608674 A JP12608674 A JP 12608674A JP S5644629 B2 JPS5644629 B2 JP S5644629B2
- Authority
- JP
- Japan
- 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
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
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1008—Earpieces of the supra-aural or circum-aural type
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT925473A AT325125B (de) | 1973-11-02 | 1973-11-02 | Kopfhörer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5080118A JPS5080118A (ja) | 1975-06-30 |
| JPS5644629B2 true JPS5644629B2 (ja) | 1981-10-21 |
Family
ID=3612547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12608674A Expired JPS5644629B2 (ja) | 1973-11-02 | 1974-10-31 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5644629B2 (ja) |
| AT (1) | AT325125B (ja) |
| DE (1) | DE2451427C3 (ja) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410260Y2 (ja) * | 1975-05-27 | 1979-05-12 | ||
| JPS5250726U (ja) * | 1975-10-09 | 1977-04-11 | ||
| JPS5341219A (en) * | 1976-09-27 | 1978-04-14 | Matsushita Electric Ind Co Ltd | Sound insulation type headphone |
| JPS5388718A (en) * | 1976-12-15 | 1978-08-04 | Matsushita Electric Ind Co Ltd | Sealed head phone |
| DE2836937B2 (de) * | 1977-08-31 | 1981-06-25 | AKG Akustische u. Kino-Geräte GmbH, Wien | Kopfhörer |
| US4993074A (en) * | 1988-04-13 | 1991-02-12 | Carroll Robert J | Earphone spacer |
| JP2546271Y2 (ja) * | 1988-12-12 | 1997-08-27 | ソニー株式会社 | 電気音響変換器 |
| US5257318A (en) * | 1989-01-11 | 1993-10-26 | Carroll Robert J | Earphone spacer with electronically variable sound level |
| TW356629B (en) * | 1996-11-28 | 1999-04-21 | Kirk Acoustics As | Telephone handset, cordless telephone or mobile telephone |
| US6084976A (en) * | 1999-06-11 | 2000-07-04 | Lin; Chung-Yu | Earphone without impulse noise and conductive hearing loss |
| US20230336908A1 (en) * | 2020-10-09 | 2023-10-19 | Gn Audio A/S | On-the-ear ear cushion with multiple foams having different properties |
-
1973
- 1973-11-02 AT AT925473A patent/AT325125B/de not_active IP Right Cessation
-
1974
- 1974-10-29 DE DE19742451427 patent/DE2451427C3/de not_active Expired
- 1974-10-31 JP JP12608674A patent/JPS5644629B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2451427C3 (de) | 1980-08-28 |
| AT325125B (de) | 1975-10-10 |
| DE2451427B2 (de) | 1980-01-03 |
| DE2451427A1 (de) | 1975-05-07 |
| JPS5080118A (ja) | 1975-06-30 |