BE538719A - - Google Patents
Info
- Publication number
- BE538719A BE538719A BE538719DA BE538719A BE 538719 A BE538719 A BE 538719A BE 538719D A BE538719D A BE 538719DA BE 538719 A BE538719 A BE 538719A
- Authority
- BE
- Belgium
- Prior art keywords
- microphone
- crown
- loudspeaker
- frame
- desc
- Prior art date
Links
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000002966 varnish Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/62—Constructional arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE538719A true BE538719A (enrdf_load_stackoverflow) |
Family
ID=168652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE538719D BE538719A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE538719A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811406A (en) * | 1982-03-31 | 1989-03-07 | Pioneer Electronic Corporation | Compound speaker system |
-
0
- BE BE538719D patent/BE538719A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811406A (en) * | 1982-03-31 | 1989-03-07 | Pioneer Electronic Corporation | Compound speaker system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0843452B1 (fr) | Combiné téléphonique avec épaisseur réduite de la partie écouteur | |
| US20080298623A1 (en) | Adapter For a Loudspeaker | |
| GB2200814A (en) | Background noise cancelling microphone | |
| CN210274456U (zh) | 耳机 | |
| US8989424B2 (en) | Earphone arrangements | |
| WO2007050219A3 (en) | Audio porting assembly | |
| WO2016197412A1 (zh) | 适用于骨传导耳机的大功率振子 | |
| FR2717031A1 (fr) | Enceinte acoustique pourvu d'un radiateur passif interne. | |
| TWM508867U (zh) | 中心降噪喇叭結構 | |
| CN211744683U (zh) | 包括dsf通道的入耳式耳机 | |
| FR2894425A3 (fr) | Ecouteur de reception et de transmission anti-parasites. | |
| CN210579147U (zh) | 一种降噪耳机 | |
| KR102692660B1 (ko) | 마이크 오디오 입력 신호의 수동 잡음 감소를 제공하는 휴대폰 커버 | |
| JP4939922B2 (ja) | コンデンサマイクロホン | |
| US20070047739A1 (en) | Low-noise transmitting receiving earset | |
| CN210609653U (zh) | 一种前腔音嘴内置麦克风降噪耳机 | |
| BE538719A (enrdf_load_stackoverflow) | ||
| JP2005286500A (ja) | 補聴器用マイク付きイヤホン | |
| CN212677367U (zh) | 一种降噪耳机 | |
| CN212727376U (zh) | 一种可降噪的耳机喇叭腔体 | |
| KR100767390B1 (ko) | 이퀄라이저 기능을 가진 이어폰 | |
| CN218830560U (zh) | 一种集成麦克风的降噪耳机喇叭 | |
| US2522859A (en) | Electrodynamic loudspeaker and mounting therefor | |
| CN205510347U (zh) | 一种耳机 | |
| KR101441821B1 (ko) | 귀걸이형 이어폰 거치 장치 |