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KR920006909A - 악음신호발생장치 - Google Patents

악음신호발생장치 Download PDF

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Publication number
KR920006909A
KR920006909A KR1019910014928A KR910014928A KR920006909A KR 920006909 A KR920006909 A KR 920006909A KR 1019910014928 A KR1019910014928 A KR 1019910014928A KR 910014928 A KR910014928 A KR 910014928A KR 920006909 A KR920006909 A KR 920006909A
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KR
South Korea
Prior art keywords
pitch
generating
specifying
coefficients
data
Prior art date
Application number
KR1019910014928A
Other languages
English (en)
Other versions
KR0150223B1 (ko
Inventor
고이찌 고즈끼
가즈히사 오까무라
데쯔지 이찌끼
Original Assignee
가와까미 히로시
야마하 가부시끼가이샤
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 가와까미 히로시, 야마하 가부시끼가이샤 filed Critical 가와까미 히로시
Publication of KR920006909A publication Critical patent/KR920006909A/ko
Application granted granted Critical
Publication of KR0150223B1 publication Critical patent/KR0150223B1/ko

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Classifications

    • 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
    • G10H5/00—Instruments in which the tones are generated by means of electronic generators
    • 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
    • G10H7/08—Instruments in which the tones are synthesised from a data store, e.g. computer organs by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform
    • 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
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/06—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
    • G10H1/12—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by filtering complex waveforms
    • G10H1/125—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by filtering complex waveforms using a digital filter
    • 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
    • G10H7/02—Instruments in which the tones are synthesised from a data store, e.g. computer organs in which amplitudes at successive sample points of a tone waveform are stored in one or more memories
    • 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
    • G10H2250/145—Convolution, e.g. of a music input signal with a desired impulse response to compute an output
    • 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
    • G10H2250/161—Logarithmic functions, scaling or conversion, e.g. to reflect human auditory perception of loudness or frequency
    • 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
    • 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
    • G10H2250/571—Waveform compression, adapted for music synthesisers, sound banks or wavetables
    • G10H2250/591—DPCM [delta pulse code modulation]
    • 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
    • G10H2250/571—Waveform compression, adapted for music synthesisers, sound banks or wavetables
    • G10H2250/591—DPCM [delta pulse code modulation]
    • G10H2250/595—ADPCM [adaptive differential pulse code modulation]
    • 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
    • G10H2250/621—Waveform interpolation
    • 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)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

내용 없음

Description

악음신호발생장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명을 실시한 전자악기의 1예를 도시한 전체 구성블럭도
제4도는 제3도에 있어서의 파형발생회로의 1예를 도시한 블럭도
제5도는 각종 클럭펄스 및 시분할 연산타이밍의 1예를 도시한 타이밍도.

Claims (1)

  1. 발생해야할 악음의 음높이를 지정하는 음높이지정수단, 지정된 음높이에 대응하는 주파수로 디지탈파형샘플데이타를 발생하는 파형발생수단, 바라는 보간특성에 대응하는 n개의 계수를 발생하는 계수 발생수단, 상기 음노피지정수단에서 지정된 음높이에 따라서 상기 계수발생수단에서 발생하는 상기 계수를 변화시키고, 상기 보간특성을 가변제어하는 특성제어수단 및 상기 파형발생수단에서 순차로 발생되는 n개의 디지탈파형 샘플데이타에 대해서 상기 계수를 각각 연산하고, 이것을 합성해서 1샘플의 데이타를 형성하는 보간연산수단을 포함한 악음신호발생장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910014928A 1990-09-05 1991-08-28 악음신호발생장치 KR0150223B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2233104A JP2623942B2 (ja) 1990-09-05 1990-09-05 楽音信号発生装置
JP2-233104 1990-09-05

Publications (2)

Publication Number Publication Date
KR920006909A true KR920006909A (ko) 1992-04-28
KR0150223B1 KR0150223B1 (ko) 1998-12-15

Family

ID=16949839

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910014928A KR0150223B1 (ko) 1990-09-05 1991-08-28 악음신호발생장치

Country Status (7)

Country Link
US (1) US5252773A (ko)
EP (1) EP0474177B1 (ko)
JP (1) JP2623942B2 (ko)
KR (1) KR0150223B1 (ko)
CN (1) CN1022071C (ko)
DE (1) DE69128857T2 (ko)
TW (1) TW199930B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333622B1 (ko) * 1999-12-29 2002-04-22 구자홍 디스크 드라이버의 가이드레버 구동장치

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JP3029056B2 (ja) * 1991-03-26 2000-04-04 ヤマハ株式会社 電子楽器
JP2819948B2 (ja) * 1992-07-16 1998-11-05 ヤマハ株式会社 楽音信号記録再生装置
US5416264A (en) * 1992-07-27 1995-05-16 Yamaha Corporation Waveform-forming device having memory storing non-compressed/compressed waveform samples
GB9318524D0 (en) * 1993-09-07 1993-10-20 Ethymonics Ltd Tone generator
JP2762926B2 (ja) * 1994-05-10 1998-06-11 ヤマハ株式会社 楽音生成装置
JP2950461B2 (ja) * 1994-05-31 1999-09-20 株式会社河合楽器製作所 楽音発生装置
US5742695A (en) * 1994-11-02 1998-04-21 Advanced Micro Devices, Inc. Wavetable audio synthesizer with waveform volume control for eliminating zipper noise
US6047073A (en) * 1994-11-02 2000-04-04 Advanced Micro Devices, Inc. Digital wavetable audio synthesizer with delay-based effects processing
US6246774B1 (en) 1994-11-02 2001-06-12 Advanced Micro Devices, Inc. Wavetable audio synthesizer with multiple volume components and two modes of stereo positioning
US5691496A (en) * 1995-02-14 1997-11-25 Kawai Musical Inst. Mfg. Co., Ltd. Musical tone control apparatus for filter processing a musical tone waveform ONLY in a transient band between a pass-band and a stop-band
TW281748B (en) * 1995-05-19 1996-07-21 Yamaha Corp Method of composing music
CN1591564B (zh) * 1995-06-19 2010-10-06 雅马哈株式会社 形成乐音波形的方法和装置
US5753841A (en) * 1995-08-17 1998-05-19 Advanced Micro Devices, Inc. PC audio system with wavetable cache
US5847304A (en) * 1995-08-17 1998-12-08 Advanced Micro Devices, Inc. PC audio system with frequency compensated wavetable data
JP3658826B2 (ja) * 1995-12-21 2005-06-08 ヤマハ株式会社 楽音生成方法
DE69702336T2 (de) * 1996-02-21 2001-02-15 Advanced Micro Devices Inc., Austin Audiosystem für pc mit frequenzkompensierten wellenformdaten
DE69909849T2 (de) * 1999-11-24 2004-05-27 Stmicroelectronics Asia Pacific Pte Ltd. Unterdrückung von alias-störungen in algorithmen für audio-effekten
US6882976B1 (en) * 2001-02-28 2005-04-19 Advanced Micro Devices, Inc. Efficient finite length POW10 calculation for MPEG audio encoding
JP4645337B2 (ja) * 2005-07-19 2011-03-09 カシオ計算機株式会社 波形データ補間装置
JP5789993B2 (ja) * 2011-01-20 2015-10-07 ヤマハ株式会社 楽音信号発生装置
WO2018129558A1 (en) 2017-01-09 2018-07-12 Media Overkill, LLC Multi-source switched sequence oscillator waveform compositing system
JP7375317B2 (ja) * 2019-03-25 2023-11-08 カシオ計算機株式会社 フィルタ効果付与装置、電子楽器及び電子楽器の制御方法

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JPS5792399A (en) * 1980-11-29 1982-06-08 Nippon Musical Instruments Mfg Electronic musical instrument
JPS6052895A (ja) * 1983-09-02 1985-03-26 ヤマハ株式会社 楽音信号発生装置
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JP2576647B2 (ja) * 1989-11-30 1997-01-29 ヤマハ株式会社 波形発生装置
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333622B1 (ko) * 1999-12-29 2002-04-22 구자홍 디스크 드라이버의 가이드레버 구동장치

Also Published As

Publication number Publication date
JP2623942B2 (ja) 1997-06-25
DE69128857T2 (de) 1998-09-17
JPH04114199A (ja) 1992-04-15
EP0474177A3 (en) 1993-10-06
KR0150223B1 (ko) 1998-12-15
EP0474177A2 (en) 1992-03-11
CN1059615A (zh) 1992-03-18
DE69128857D1 (de) 1998-03-12
TW199930B (ko) 1993-02-11
US5252773A (en) 1993-10-12
EP0474177B1 (en) 1998-02-04
CN1022071C (zh) 1993-09-08

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