ES2121783T3 - ENVIRONMENTAL ACOUSTIC PROCESSOR. - Google Patents
ENVIRONMENTAL ACOUSTIC PROCESSOR.Info
- Publication number
- ES2121783T3 ES2121783T3 ES91910951T ES91910951T ES2121783T3 ES 2121783 T3 ES2121783 T3 ES 2121783T3 ES 91910951 T ES91910951 T ES 91910951T ES 91910951 T ES91910951 T ES 91910951T ES 2121783 T3 ES2121783 T3 ES 2121783T3
- Authority
- ES
- Spain
- Prior art keywords
- signals
- information
- control voltage
- time constants
- voltage signals
- Prior art date
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
- H04S5/005—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation of the pseudo five- or more-channel type, e.g. virtual surround
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Stereophonic System (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
UN PROCESADOR DE SONIDOS DIFUSOS QUE INCLUYE UN CIRCUITO PROCESADOR DE CONSTANTE DE TIEMPO (56) PARA SUAVIZAR LAS SEÑALES DE INFORMACION SOBRE LA DIRECCION DE UN DETECTOR (54) CON CONSTANTES DE TIEMPO CONTINUAMENTE VARIABLES PARA GENERAR UNA O MAS SEÑALES DE TENSION DE CONTROL. LAS CONSTANTES DE TIEMPO PRODUCIDAS POR EL CIRCUITO SON CONTINUAMENTE VARIABLES Y RESPONDEN TANTO A LA VELOCIDAD DE CAMBIO COMO A LA AMPLITUD DE LAS SEÑALES DE INFORMACION SOBRE LA DIRECCION, DE MODO QUE A MEDIDA QUE AUMENTA LA DIFERENCIA ENTRE LAS SEÑALES DE TENSION CONTROLADAS Y LAS SEÑALES DE INFORMACION SOBRE LA DIRECCION, EL VALOR DE LAS CONSTANTES DE TIEMPO DISMINUYE PARA PERMITIR QUE LAS SEÑALES DE TENSION DE CONTROL SIGAN DE CERCA A LAS SEÑALES DE INFORMACION SOBRE LA DIRECCION Y A MEDIDA QUE DISMINUYE LA DIFERENCIA ENTRE LAS SEÑALES DE TENSION DE CONTROL Y LAS SEÑALES DE INFORMACION SOBRE LA DIRECCION, EL VALOR DE LAS CONSTANTES DE TIEMPO AUMENTA DE MODO QUE LAS VARIACIONES EN LAS SEÑALES DE TENSION DE CONTROL SON SUAVES.A DIFFUSE SOUND PROCESSOR INCLUDING A TIME CONSTANT PROCESSING CIRCUIT (56) TO SOFTEN THE INFORMATION SIGNALS ABOUT THE DIRECTION OF A DETECTOR (54) WITH CONTINUALLY VARIABLE TIME CONSTANTS TO GENERATE ONE OR MORE CONTROL VOLTAGE SIGNALS. THE TIME CONSTANTS PRODUCED BY THE CIRCUIT ARE CONTINUOUSLY VARIABLE AND RESPOND TO BOTH THE SPEED OF CHANGE AS WELL AS THE EXTENSION OF THE INFORMATION SIGNALS ABOUT THE DIRECTION, SO THAT AS THE DIFFERENCE BETWEEN THE SIGNALS AND SIGNALS OF STEERING INFORMATION, THE VALUE OF TIME CONSTANTS DECREASES TO ALLOW CONTROL VOLTAGE SIGNALS TO FOLLOW CLOSE TO DIRECTIONAL INFORMATION SIGNALS AND AS THE DIFFERENCE BETWEEN CONTROL VOLTAGE SIGNALS AND SIGNALS DECREASES OF INFORMATION ON THE STEERING, THE VALUE OF THE TIME CONSTANTS INCREASES SO THAT THE VARIATIONS IN THE CONTROL VOLTAGE SIGNALS ARE SMOOTH.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/533,091 US5172415A (en) | 1990-06-08 | 1990-06-08 | Surround processor |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2121783T3 true ES2121783T3 (en) | 1998-12-16 |
Family
ID=24124453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91910951T Expired - Lifetime ES2121783T3 (en) | 1990-06-08 | 1991-06-05 | ENVIRONMENTAL ACOUSTIC PROCESSOR. |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP3382249B2 (en) |
AT (1) | ATE171035T1 (en) |
DE (1) | DE69130169T2 (en) |
ES (1) | ES2121783T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW510143B (en) * | 1999-12-03 | 2002-11-11 | Dolby Lab Licensing Corp | Method for deriving at least three audio signals from two input audio signals |
US7212872B1 (en) * | 2000-05-10 | 2007-05-01 | Dts, Inc. | Discrete multichannel audio with a backward compatible mix |
AU8852801A (en) * | 2000-08-31 | 2002-03-13 | Dolby Lab Licensing Corp | Method for apparatus for audio matrix decoding |
US7490044B2 (en) | 2004-06-08 | 2009-02-10 | Bose Corporation | Audio signal processing |
-
1991
- 1991-06-05 DE DE69130169T patent/DE69130169T2/en not_active Expired - Lifetime
- 1991-06-05 ES ES91910951T patent/ES2121783T3/en not_active Expired - Lifetime
- 1991-06-05 AT AT91910951T patent/ATE171035T1/en not_active IP Right Cessation
- 1991-06-05 JP JP51087491A patent/JP3382249B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH06500898A (en) | 1994-01-27 |
DE69130169D1 (en) | 1998-10-15 |
ATE171035T1 (en) | 1998-09-15 |
DE69130169T2 (en) | 1999-04-15 |
JP3382249B2 (en) | 2003-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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