ES2050176T3 - Aparato para sintetizar señales analogicas en pcm. - Google Patents
Aparato para sintetizar señales analogicas en pcm.Info
- Publication number
- ES2050176T3 ES2050176T3 ES89106631T ES89106631T ES2050176T3 ES 2050176 T3 ES2050176 T3 ES 2050176T3 ES 89106631 T ES89106631 T ES 89106631T ES 89106631 T ES89106631 T ES 89106631T ES 2050176 T3 ES2050176 T3 ES 2050176T3
- Authority
- ES
- Spain
- Prior art keywords
- demands
- pcm data
- several city
- analog signals
- analog signal
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H7/00—Instruments in which the tones are synthesised from a data store, e.g. computer organs
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
- G10H2250/131—Mathematical functions for musical analysis, processing, synthesis or composition
- G10H2250/165—Polynomials, i.e. musical processing based on the use of polynomials, e.g. distortion function for tube amplifier emulation, filter coefficient calculation, polynomial approximations of waveforms, physical modeling equation solutions
- G10H2250/195—Lagrange polynomials, e.g. for polynomial interpolation or cryptography
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
- G10H2250/541—Details of musical waveform synthesis, i.e. audio waveshape processing from individual wavetable samples, independently of their origin or of the sound they represent
- G10H2250/545—Aliasing, i.e. preventing, eliminating or deliberately using aliasing noise, distortions or artifacts in sampled or synthesised waveforms, e.g. by band limiting, oversampling or undersampling, respectively
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S84/00—Music
- Y10S84/09—Filtering
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electrophonic Musical Instruments (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
- Control Of Amplification And Gain Control (AREA)
- Noise Elimination (AREA)
Abstract
ESTE INVENTO PROVEE UN APARATO DE SINTETIZACION DE SEÑALES ANALOGICAS INCLUYENDO UNA MEMORIA DE ONDAS PARA ALMACENAR UNA PLURALIDAD DE SEÑALES ANALOGICAS COMO MUESTRAS DE DATOS PCM TOMADOS A DIFERENTES FRECUENCIAS DE MUESTREO, CORRESPONDIENDO LA CANTIDAD DE DATOS PCM A LA PLURALIDAD DE CANALES QUE SE LEEN DE LA MEMORIA DE LA ONDA Y USADOS PARA SINTETIZAR SEÑALES ANALOGICAS. EL APARATO DE SINTETIZACION DE SEÑAL ANALOGICA INCLUYE UN DISPOSITIVO DE SOBREMUESTREO PARA AUMENTAR LA FRECUENCIA DE MUESTREO DE DICHA LECTURA DE DATOS PCM DE DICHA MEMORIA DE ONDAS POR CADA CANAL HACIA DE LA ALTA FRECUENCIA; UN DISPOSITIVO SUMADOR PARA SUMAR LOS DATOS PCM SOBREMOSTRADOS EN CADA CANAL RESPECTIVO; UN CONVERTIDOR D/A PARA CONVERTIR LA SEÑAL SUMADA EN UNA SEÑAL ANALOGICA; UN FILTRO DE PASO BAJO PARA ESTABLECER UNA FRECUENCIA DE CORTE BASADA EN LA FRECUENCIA AUMENTADA A LA PARTE DE ALTA FRECUENCIA Y PARA ELIMINAR RUIDOS EXTRAÑOS INCLUIDOS EN LOS DATOS PCM DE LA SINTETIZACION DE LA SEÑAL ANALOGICA. LA ELIMINACION DEL RUIDO EXTRAÑO INCLUIDO EN LOS DATOS PCM PARA CADA CANAL SE REALIZA EN EL FILTRO COMUN DE PASO BAJO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63090575A JP2970907B2 (ja) | 1988-04-13 | 1988-04-13 | Pcmにおけるアナログ信号合成装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2050176T3 true ES2050176T3 (es) | 1994-05-16 |
Family
ID=14002226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES89106631T Expired - Lifetime ES2050176T3 (es) | 1988-04-13 | 1989-04-13 | Aparato para sintetizar señales analogicas en pcm. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5050474A (es) |
EP (1) | EP0337458B1 (es) |
JP (1) | JP2970907B2 (es) |
KR (1) | KR970002239B1 (es) |
CA (1) | CA1309775C (es) |
DE (1) | DE68912380T2 (es) |
ES (1) | ES2050176T3 (es) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5342990A (en) * | 1990-01-05 | 1994-08-30 | E-Mu Systems, Inc. | Digital sampling instrument employing cache-memory |
WO1991010987A1 (en) * | 1990-01-18 | 1991-07-25 | E-Mu Systems, Inc. | Data compression of sound data |
JP2643553B2 (ja) * | 1990-07-24 | 1997-08-20 | ヤマハ株式会社 | 楽音信号処理装置 |
US6222525B1 (en) | 1992-03-05 | 2001-04-24 | Brad A. Armstrong | Image controllers with sheet connected sensors |
US6347997B1 (en) | 1997-10-01 | 2002-02-19 | Brad A. Armstrong | Analog controls housed with electronic displays |
US6344791B1 (en) | 1998-07-24 | 2002-02-05 | Brad A. Armstrong | Variable sensor with tactile feedback |
FR2704110B1 (fr) * | 1993-04-16 | 1995-07-13 | Balestro Freddy | Dispositif de traitement de signaux utilisant plusieurs filtrages differents, notamment pour le codage audiofrequence de signaux vocaux. |
WO1996002977A1 (en) * | 1994-07-13 | 1996-02-01 | Stanford Telecommunications, Inc. | Method and apparatus for alias-driven frequency downconversion (mixing) |
DE69623866T2 (de) * | 1995-06-19 | 2003-05-28 | Yamaha Corp | Verfahren und Vorrichtung zur Bildung einer Tonwellenform durch kombinierte Verwendung von verschiedenen Auflösungen der Abtastwerte der Wellenformen |
JP3658826B2 (ja) * | 1995-12-21 | 2005-06-08 | ヤマハ株式会社 | 楽音生成方法 |
US8674932B2 (en) | 1996-07-05 | 2014-03-18 | Anascape, Ltd. | Image controller |
US6351205B1 (en) | 1996-07-05 | 2002-02-26 | Brad A. Armstrong | Variable-conductance sensor |
SG67993A1 (en) | 1996-08-30 | 1999-10-19 | Yamaha Corp | Sound source system based on computer software and method of generating acoustic waveform data |
JP3220396B2 (ja) * | 1996-11-05 | 2001-10-22 | 株式会社河合楽器製作所 | 楽音波形再生装置 |
KR100486208B1 (ko) * | 1997-09-09 | 2005-06-16 | 삼성전자주식회사 | 돌비에이.시.-쓰리디코더의시간영역알리아싱제거장치및방법 |
US6415707B1 (en) | 1997-10-01 | 2002-07-09 | Brad A. Armstrong | Analog controls housed with electronic displays for coffee makers |
US6532000B2 (en) | 1997-10-01 | 2003-03-11 | Brad A. Armstrong | Analog controls housed with electronic displays for global positioning systems |
US6456778B2 (en) | 1997-10-01 | 2002-09-24 | Brad A. Armstrong | Analog controls housed with electronic displays for video recorders and cameras |
US6404584B2 (en) | 1997-10-01 | 2002-06-11 | Brad A. Armstrong | Analog controls housed with electronic displays for voice recorders |
US6069921A (en) * | 1997-10-03 | 2000-05-30 | At&T Corporation | System and method for reducing quantization noise |
FI20001913A (fi) * | 2000-08-30 | 2002-03-01 | Nokia Mobile Phones Ltd | Menetelmä ja järjestely häiriön vähentämiseksi |
TWI243357B (en) * | 2003-07-01 | 2005-11-11 | Mediatek Inc | Data processing system and method suitable for audio synthesis |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4030129A (en) * | 1976-06-14 | 1977-06-14 | Lase Industries | Pulse code modulated digital audio system |
JPS5951779B2 (ja) * | 1978-06-01 | 1984-12-15 | 日本放送協会 | デイジタル・アナログ変換方式 |
US4460890A (en) * | 1982-01-21 | 1984-07-17 | Sony Corporation | Direct digital to digital sampling rate conversion, method and apparatus |
JPS58165443A (ja) * | 1982-03-26 | 1983-09-30 | Victor Co Of Japan Ltd | 信号の符号化記憶装置 |
GB2144285B (en) * | 1983-07-29 | 1986-09-24 | Raymond Allan Belcher | Analague-to-digital and digital-to-analogue conversion |
JPS60145745U (ja) * | 1984-03-07 | 1985-09-27 | パイオニア株式会社 | D/a変換回路 |
JPH0671193B2 (ja) * | 1984-08-31 | 1994-09-07 | 株式会社日立製作所 | 非巡回型デイジタル・フイルタ |
US4660162A (en) * | 1984-08-31 | 1987-04-21 | Raytheon Company | Interpolation pulse duration modulated multiplier |
JPS6190514A (ja) * | 1984-10-11 | 1986-05-08 | Nippon Gakki Seizo Kk | 楽音信号処理装置 |
US4602545A (en) * | 1985-01-24 | 1986-07-29 | Cbs Inc. | Digital signal generator for musical notes |
US4864625A (en) * | 1985-09-13 | 1989-09-05 | Casio Computer Co., Ltd. | Effector for electronic musical instrument |
JPH0631989B2 (ja) * | 1985-11-14 | 1994-04-27 | ロ−ランド株式会社 | 電子楽器の波形発生装置 |
JPS62120127A (ja) * | 1985-11-20 | 1987-06-01 | Matsushita Electric Ind Co Ltd | デイジタルアナログ変換装置 |
DE3689305T2 (de) * | 1985-11-29 | 1994-04-28 | Yamaha Corp | Tonsignalsbehandlungsvorrichtung. |
-
1988
- 1988-04-13 JP JP63090575A patent/JP2970907B2/ja not_active Expired - Lifetime
-
1989
- 1989-04-10 US US07/335,383 patent/US5050474A/en not_active Expired - Lifetime
- 1989-04-12 CA CA000596433A patent/CA1309775C/en not_active Expired - Fee Related
- 1989-04-13 EP EP89106631A patent/EP0337458B1/en not_active Expired - Lifetime
- 1989-04-13 DE DE68912380T patent/DE68912380T2/de not_active Expired - Fee Related
- 1989-04-13 ES ES89106631T patent/ES2050176T3/es not_active Expired - Lifetime
- 1989-04-13 KR KR89004866A patent/KR970002239B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH01261909A (ja) | 1989-10-18 |
KR890016792A (ko) | 1989-11-30 |
US5050474A (en) | 1991-09-24 |
DE68912380T2 (de) | 1994-08-11 |
CA1309775C (en) | 1992-11-03 |
EP0337458B1 (en) | 1994-01-19 |
JP2970907B2 (ja) | 1999-11-02 |
DE68912380D1 (de) | 1994-03-03 |
KR970002239B1 (en) | 1997-02-26 |
EP0337458A2 (en) | 1989-10-18 |
EP0337458A3 (en) | 1990-11-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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