NL51541C - - Google Patents
Info
- Publication number
- NL51541C NL51541C NL51541DA NL51541C NL 51541 C NL51541 C NL 51541C NL 51541D A NL51541D A NL 51541DA NL 51541 C NL51541 C NL 51541C
- Authority
- NL
- Netherlands
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
- H04R1/36—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 by using a single aperture of dimensions not greater than the shortest operating wavelength
-
- 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
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14600A US2034014A (en) | 1935-04-04 | 1935-04-04 | High-fidelity sound reproducing apparatus and method of improving the fidelity thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL51541C true NL51541C (US06252093-20010626-C00008.png) |
Family
ID=21766445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL51541D NL51541C (US06252093-20010626-C00008.png) | 1935-04-04 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2034014A (US06252093-20010626-C00008.png) |
| DE (1) | DE691238C (US06252093-20010626-C00008.png) |
| FR (1) | FR804389A (US06252093-20010626-C00008.png) |
| NL (1) | NL51541C (US06252093-20010626-C00008.png) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2623606A (en) * | 1948-06-30 | 1952-12-30 | Corke Alfred James | Sound reproduction apparatus |
| GB765183A (en) * | 1954-01-05 | 1957-01-02 | Donald Maynard Chave | Improvements in or relating to loudspeakers |
| US2858899A (en) * | 1956-07-03 | 1958-11-04 | Lopez-Henriquez Miguel | High fidelity speaker enclosure system |
| JPS5644148Y2 (US06252093-20010626-C00008.png) * | 1976-01-19 | 1981-10-15 | ||
| US4313521A (en) * | 1980-06-16 | 1982-02-02 | Rodden M Raymond | Speaker housing |
| DE4307655C2 (de) * | 1993-03-11 | 1996-11-07 | Automation Dr Meggl Gmbh | Lautsprecheranordnung |
| USD780159S1 (en) * | 2014-07-15 | 2017-02-28 | Funktion One Research | Loudspeaker |
| USD780158S1 (en) * | 2014-07-15 | 2017-02-28 | Funktion One Research | Loudspeaker |
| USD769215S1 (en) * | 2014-07-15 | 2016-10-18 | Funktion One Research | Loudspeaker |
-
0
- NL NL51541D patent/NL51541C/xx active
-
1935
- 1935-04-04 US US14600A patent/US2034014A/en not_active Expired - Lifetime
-
1936
- 1936-04-02 FR FR804389D patent/FR804389A/fr not_active Expired
- 1936-04-04 DE DE1936H0147183 patent/DE691238C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR804389A (fr) | 1936-10-22 |
| DE691238C (de) | 1940-05-20 |
| US2034014A (en) | 1936-03-17 |
