FR2365266B1 - - Google Patents
Info
- Publication number
- FR2365266B1 FR2365266B1 FR7720382A FR7720382A FR2365266B1 FR 2365266 B1 FR2365266 B1 FR 2365266B1 FR 7720382 A FR7720382 A FR 7720382A FR 7720382 A FR7720382 A FR 7720382A FR 2365266 B1 FR2365266 B1 FR 2365266B1
- 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
- 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
- H04R1/345—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 for loudspeakers
- H04R1/347—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 for loudspeakers for obtaining a phase-shift between the front and back acoustic wave
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU76EE2441A HU173844B (hu) | 1976-09-15 | 1976-09-15 | Kardiodnyj zvukovoj izluchatel' |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2365266A1 FR2365266A1 (fr) | 1978-04-14 |
FR2365266B1 true FR2365266B1 (US20090177143A1-20090709-C00008.png) | 1980-03-21 |
Family
ID=10995695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7720382A Granted FR2365266A1 (fr) | 1976-09-15 | 1977-07-01 | Radiateur acoustique a caracteristique directive en forme de cardioide |
Country Status (9)
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI823540A0 (fi) * | 1982-10-18 | 1982-10-18 | Polarpro Oy | Hoegtalare |
JP4767164B2 (ja) * | 2004-04-13 | 2011-09-07 | パナソニック株式会社 | スピーカ装置 |
-
1976
- 1976-09-15 HU HU76EE2441A patent/HU173844B/hu not_active IP Right Cessation
-
1977
- 1977-06-03 AT AT396977A patent/AT360602B/de not_active IP Right Cessation
- 1977-06-06 DD DD19932277A patent/DD131059A5/xx unknown
- 1977-06-11 PL PL19878477A patent/PL110720B1/pl unknown
- 1977-06-15 SU SU772495177A patent/SU786940A3/ru active
- 1977-06-16 CS CS397077A patent/CS244103B2/cs unknown
- 1977-06-23 YU YU155677A patent/YU40676B/xx unknown
- 1977-07-01 FR FR7720382A patent/FR2365266A1/fr active Granted
- 1977-08-04 IT IT6880577A patent/IT1116791B/it active
Also Published As
Publication number | Publication date |
---|---|
SU786940A3 (ru) | 1980-12-07 |
PL110720B1 (en) | 1980-07-31 |
IT1116791B (it) | 1986-02-10 |
HU173844B (hu) | 1979-09-28 |
YU155677A (en) | 1982-06-30 |
YU40676B (en) | 1986-04-30 |
CS244103B2 (en) | 1986-07-17 |
ATA396977A (de) | 1980-06-15 |
DD131059A5 (de) | 1978-05-24 |
FR2365266A1 (fr) | 1978-04-14 |
PL198784A1 (pl) | 1978-03-28 |
AT360602B (de) | 1981-01-26 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |