FR2290814B1 - - Google Patents
Info
- Publication number
- FR2290814B1 FR2290814B1 FR7436791A FR7436791A FR2290814B1 FR 2290814 B1 FR2290814 B1 FR 2290814B1 FR 7436791 A FR7436791 A FR 7436791A FR 7436791 A FR7436791 A FR 7436791A FR 2290814 B1 FR2290814 B1 FR 2290814B1
- 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
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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7413938A NL7413938A (nl) | 1974-10-24 | 1974-10-24 | Inrichting en werkwijze voor het opheffen van akoestische terugkoppeling. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2290814A1 FR2290814A1 (fr) | 1976-06-04 |
| FR2290814B1 true FR2290814B1 (US20030204162A1-20031030-M00001.png) | 1982-04-16 |
Family
ID=19822330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7436791A Granted FR2290814A1 (fr) | 1974-10-24 | 1974-11-06 | Circuit de suppression de signaux de retroaction |
Country Status (4)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2633394C2 (de) * | 1976-07-24 | 1983-08-25 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zum Kompensieren der akustischen Rückkopplung |
| US4087633A (en) * | 1977-07-18 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Dereverberation system |
| DE2931604C2 (de) * | 1979-08-03 | 1982-04-29 | Siemens AG, 1000 Berlin und 8000 München | Störgeräuschkompensierte Mikrofonschaltung |
| US4311874A (en) * | 1979-12-17 | 1982-01-19 | Bell Telephone Laboratories, Incorporated | Teleconference microphone arrays |
| DE3325031A1 (de) * | 1983-07-11 | 1985-01-24 | Sennheiser Electronic Kg, 3002 Wedemark | Infrarot-kopfhoerer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE884376C (de) * | 1944-09-21 | 1953-07-27 | Siemens Ag | Lautsprecheranlage mit Schaltungsanordnung zur Rueckkopplungs-vermeidung |
-
1974
- 1974-10-24 NL NL7413938A patent/NL7413938A/xx not_active Application Discontinuation
- 1974-10-24 AT AT855374A patent/AT337280B/de not_active IP Right Cessation
- 1974-10-29 DE DE19742451278 patent/DE2451278C2/de not_active Expired
- 1974-11-06 FR FR7436791A patent/FR2290814A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| ATA855374A (de) | 1976-10-15 |
| DE2451278A1 (de) | 1976-05-06 |
| NL7413938A (nl) | 1976-04-27 |
| FR2290814A1 (fr) | 1976-06-04 |
| DE2451278C2 (de) | 1984-02-16 |
| AT337280B (de) | 1977-06-27 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |