ATE115794T1 - Schaltung zur audiosignalverarbeitung. - Google Patents
Schaltung zur audiosignalverarbeitung.Info
- Publication number
- ATE115794T1 ATE115794T1 AT90907341T AT90907341T ATE115794T1 AT E115794 T1 ATE115794 T1 AT E115794T1 AT 90907341 T AT90907341 T AT 90907341T AT 90907341 T AT90907341 T AT 90907341T AT E115794 T1 ATE115794 T1 AT E115794T1
- Authority
- AT
- Austria
- Prior art keywords
- pct
- signal
- sec
- circuitry
- signal processing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Software Systems (AREA)
- Databases & Information Systems (AREA)
- Algebra (AREA)
- General Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Stereo-Broadcasting Methods (AREA)
- Complex Calculations (AREA)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8910956A GB2232860A (en) | 1989-05-12 | 1989-05-12 | Audio signal echo cancellation circuit |
GB9010752A GB2232563B (en) | 1989-05-12 | 1990-05-14 | Audio signal processor circuit |
PCT/GB1990/000747 WO1991018453A1 (en) | 1989-05-12 | 1990-05-15 | Audio signal processor circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE115794T1 true ATE115794T1 (de) | 1994-12-15 |
Family
ID=27264476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT90907341T ATE115794T1 (de) | 1989-05-12 | 1990-05-15 | Schaltung zur audiosignalverarbeitung. |
Country Status (8)
Country | Link |
---|---|
US (1) | US5453976A (de) |
EP (1) | EP0482003B1 (de) |
JP (1) | JPH05501941A (de) |
AT (1) | ATE115794T1 (de) |
CA (1) | CA2063800C (de) |
DE (1) | DE69015193T2 (de) |
ES (1) | ES2064733T3 (de) |
WO (1) | WO1991018453A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543666A1 (de) * | 1995-11-23 | 1997-05-28 | Sel Alcatel Ag | Echokompensator |
US7054346B2 (en) * | 2001-05-07 | 2006-05-30 | Lucent Technologies Inc. | Enhanced frequency hopping in a wireless system |
JP5761646B2 (ja) | 2009-12-21 | 2015-08-12 | ダリ システムズ カンパニー リミテッド | 変調アグノスティック(agnostic)デジタルハイブリッドモード電力増幅器のシステム及び方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3732410A (en) * | 1969-12-22 | 1973-05-08 | Postmaster Department Res Labo | Self adaptive filter and control circuit therefor |
US3789165A (en) * | 1972-04-24 | 1974-01-29 | Communications Satellite Corp | Echo canceller with variable threshold |
US4024358A (en) * | 1975-10-31 | 1977-05-17 | Communications Satellite Corporation (Comsat) | Adaptive echo canceller using differential pulse code modulation encoding |
US4071903A (en) * | 1976-08-04 | 1978-01-31 | International Business Machines Corporation | Autocorrelation function factor generating method and circuitry therefor |
NL7902053A (nl) * | 1979-03-15 | 1980-09-17 | Philips Nv | Echocompensator voor homochrone data overdrachtssyste- men. |
US4270026A (en) * | 1979-11-28 | 1981-05-26 | International Telephone And Telegraph Corporation | Interpolator apparatus for increasing the word rate of a digital signal of the type employed in digital telephone systems |
DE3235915T1 (de) * | 1981-03-05 | 1983-11-17 | Western Electric Co., Inc., 10038 New York, N.Y. | Energiebanddiskriminator |
US4621172A (en) * | 1982-12-22 | 1986-11-04 | Nec Corporation | Fast convergence method and system for echo canceller |
FR2538975A1 (fr) * | 1982-12-30 | 1984-07-06 | Trt Telecom Radio Electr | Procede utilise dans un dispositif d'annulation d'echo pour la mesure d'un retard d'echo et dispositif de mise en oeuvre de ce procede |
US4562312A (en) * | 1983-02-17 | 1985-12-31 | At&T Bell Laboratories | Subsampling delay estimator for an echo canceler |
US4707824A (en) * | 1983-12-15 | 1987-11-17 | Nec Corporation | Method and apparatus for cancelling echo |
US4760596A (en) * | 1986-02-25 | 1988-07-26 | Gte Laboratories Incorporated | Adaptive echo cancellation and equalization system signal processor and method therefor |
CA2004379C (en) * | 1988-12-01 | 1993-07-06 | Tetsu Taguchi | Echo canceller with means for determining filter coefficients from autocorrelation and cross-correlation coefficients |
-
1990
- 1990-05-15 EP EP90907341A patent/EP0482003B1/de not_active Expired - Lifetime
- 1990-05-15 ES ES90907341T patent/ES2064733T3/es not_active Expired - Lifetime
- 1990-05-15 WO PCT/GB1990/000747 patent/WO1991018453A1/en active IP Right Grant
- 1990-05-15 CA CA002063800A patent/CA2063800C/en not_active Expired - Fee Related
- 1990-05-15 AT AT90907341T patent/ATE115794T1/de active
- 1990-05-15 JP JP2507405A patent/JPH05501941A/ja active Pending
- 1990-05-15 DE DE69015193T patent/DE69015193T2/de not_active Expired - Fee Related
- 1990-05-15 US US07/793,399 patent/US5453976A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5453976A (en) | 1995-09-26 |
EP0482003B1 (de) | 1994-12-14 |
CA2063800C (en) | 2001-07-03 |
DE69015193T2 (de) | 1995-05-04 |
DE69015193D1 (de) | 1995-01-26 |
CA2063800A1 (en) | 1991-11-16 |
EP0482003A1 (de) | 1992-04-29 |
JPH05501941A (ja) | 1993-04-08 |
ES2064733T3 (es) | 1995-02-01 |
WO1991018453A1 (en) | 1991-11-28 |
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