BE470915A - - Google Patents
Info
- Publication number
- BE470915A BE470915A BE470915DA BE470915A BE 470915 A BE470915 A BE 470915A BE 470915D A BE470915D A BE 470915DA BE 470915 A BE470915 A BE 470915A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/18—Automatic control in untuned amplifiers
- H03G5/20—Automatic control in untuned amplifiers having discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US414137A US2315249A (en) | 1941-10-08 | 1941-10-08 | Pseudo-extension of frequency bands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE470915A true BE470915A (pt) |
Family
ID=23640105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470915D BE470915A (pt) | 1941-10-08 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2315249A (pt) |
| BE (1) | BE470915A (pt) |
| GB (1) | GB682233A (pt) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3075044A (en) * | 1958-05-05 | 1963-01-22 | Tonalyzer Inc | Method and apparatus for obtaining sound |
| US4150253A (en) * | 1976-03-15 | 1979-04-17 | Inter-Technology Exchange Ltd. | Signal distortion circuit and method of use |
| US5930373A (en) * | 1997-04-04 | 1999-07-27 | K.S. Waves Ltd. | Method and system for enhancing quality of sound signal |
| US6285767B1 (en) | 1998-09-04 | 2001-09-04 | Srs Labs, Inc. | Low-frequency audio enhancement system |
| US7031474B1 (en) * | 1999-10-04 | 2006-04-18 | Srs Labs, Inc. | Acoustic correction apparatus |
| US7277767B2 (en) | 1999-12-10 | 2007-10-02 | Srs Labs, Inc. | System and method for enhanced streaming audio |
| US8050434B1 (en) | 2006-12-21 | 2011-11-01 | Srs Labs, Inc. | Multi-channel audio enhancement system |
| CN104012001B (zh) | 2011-12-27 | 2017-10-27 | Dts有限责任公司 | 低音增强系统 |
| US9258664B2 (en) | 2013-05-23 | 2016-02-09 | Comhear, Inc. | Headphone audio enhancement system |
-
0
- BE BE470915D patent/BE470915A/xx unknown
-
1941
- 1941-10-08 US US414137A patent/US2315249A/en not_active Expired - Lifetime
-
1947
- 1947-03-21 GB GB7819/47A patent/GB682233A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB682233A (en) | 1952-11-05 |
| US2315249A (en) | 1943-03-30 |