FR605534A - - Google Patents
Info
- Publication number
- FR605534A FR605534A FR605534DA FR605534A FR 605534 A FR605534 A FR 605534A FR 605534D A FR605534D A FR 605534DA FR 605534 A FR605534 A FR 605534A
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2824324A GB248060A (en) | 1924-11-25 | 1924-11-25 | Improvements in or relating to loud speaking telephonic receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR605534A true FR605534A (en) | 1926-05-28 |
Family
ID=10272597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR605534D Expired FR605534A (en) | 1924-11-25 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR605534A (en) |
| GB (1) | GB248060A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE971730C (en) * | 1952-04-27 | 1959-03-19 | Philips Patentverwaltung | Omnidirectional speakers |
| DE4100708A1 (en) * | 1991-01-11 | 1992-07-16 | Robert Schwanitz | Spherical housing contg. reflex horn for sound reproduction - has centrally divided horn with internal space shaped to minimise distortion and over modulation of acoustic waves |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2823157B2 (en) * | 1986-04-01 | 1998-11-11 | キヤノン株式会社 | Audio output system |
-
0
- FR FR605534D patent/FR605534A/fr not_active Expired
-
1924
- 1924-11-25 GB GB2824324A patent/GB248060A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE971730C (en) * | 1952-04-27 | 1959-03-19 | Philips Patentverwaltung | Omnidirectional speakers |
| DE4100708A1 (en) * | 1991-01-11 | 1992-07-16 | Robert Schwanitz | Spherical housing contg. reflex horn for sound reproduction - has centrally divided horn with internal space shaped to minimise distortion and over modulation of acoustic waves |
Also Published As
| Publication number | Publication date |
|---|---|
| GB248060A (en) | 1926-02-25 |