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
- 239000012528 membrane Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 210000003284 Horns Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 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)
- Telephone Set Structure (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE538719A true BE538719A (de) |
Family
ID=168652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE538719D BE538719A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE538719A (de) |
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 |
|---|---|---|
| EP3706430A1 (de) | Geräuschminderndes luftleitungsmikrofon, sicherer geräuschmindernder ohrhörer und sicherer geräuschminderndes bluetooth-kopfhörer | |
| US20080298623A1 (en) | Adapter For a Loudspeaker | |
| US8989424B2 (en) | Earphone arrangements | |
| CN210274456U (zh) | 耳机 | |
| FR2755813A1 (fr) | Combine telephonique | |
| WO2016197412A1 (zh) | 适用于骨传导耳机的大功率振子 | |
| WO2007050219A3 (en) | Audio porting assembly | |
| FR2894425A3 (fr) | Ecouteur de reception et de transmission anti-parasites. | |
| TWM508867U (zh) | 中心降噪喇叭結構 | |
| FR2717031A1 (fr) | Enceinte acoustique pourvu d'un radiateur passif interne. | |
| CN211744683U (zh) | 包括dsf通道的入耳式耳机 | |
| JP7360176B2 (ja) | マイクロフォン音声入力信号のパッシブノイズリダクションを提供する携帯電話カバー | |
| US20090238388A1 (en) | Hearing Aid With Enhanced Vent | |
| US7447308B2 (en) | Low-noise transmitting receiving earset | |
| US8116498B2 (en) | Condenser microphone | |
| JP5118987B2 (ja) | 単一指向性コンデンサマイクロホンユニットおよびラインマイクロホン | |
| CN208783051U (zh) | 一种反馈式降噪入耳式耳机 | |
| CN210609653U (zh) | 一种前腔音嘴内置麦克风降噪耳机 | |
| TW200601869A (en) | Speaker and device using this speaker | |
| BE538719A (de) | ||
| TWM606851U (zh) | 耳機 | |
| WO2009113751A1 (en) | Headphone applied to check valve | |
| CN212727376U (zh) | 一种可降噪的耳机喇叭腔体 | |
| CN208905183U (zh) | 一种智能家具用音箱 | |
| CN204616045U (zh) | 一种迷宫倒相音箱 |