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1. 发明专利

JP6520268B2 楽音合成装置、方法、およびプログラム、電子楽器有权
公开(公告)号：JP6520268B2
公开(公告)日：2019-05-29
申请号：JP2015057435
申请日：2015-03-20
申请人：カシオ計算機株式会社
发明人：春日一貴
IPC分类号： G10H7/12

2. 发明专利

JP2004048101A Apparatus and method of generating waveform, and decoder 有权
公开(公告)号：JP2004048101A
公开(公告)日：2004-02-12
申请号：JP2002199070
申请日：2002-07-08
申请人： Sony Corp , ソニー株式会社
发明人： KENMOCHI KAZUTOMO , INOUE AKIRA , NISHIGUCHI MASAYUKI
IPC分类号： G10H7/10 , G10H7/12 , H03B28/00
CPC分类号： G10H7/12 , G10H7/10 , G10H2250/121 , G10H2250/225 , H03B28/00
摘要： PROBLEM TO BE SOLVED: To generate a sine wave without performing modulo addressing.
SOLUTION: The amplitude, phase and frequency of a sine wave to be generated are calculated on the basis of a feature amount s1 delivered to a feature amount detecting means 2, and are transmitted to an initial setting means 3. In the means 3, two initial points of the sine wave are calculated, and are transmitted as initial values s4 to an oscillator (sine wave generating means) 4. The oscillator (sine wave generating means) 4 successively computes a value of each sample point of the waveform by using a recurrence formula, according to an initial value instructed by the means 3, thereby generating a sine wave signal.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JPH1195794A PITCH/TEMPO CONVERTING METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JPH1195794A
公开(公告)日：1999-04-09
申请号：JP25639397
申请日：1997-09-22
申请人： YAMAHA CORP
发明人： KONDOU KAZUNOBU
IPC分类号： G10L21/04 , G10H1/043 , G10H1/20 , G10H7/12 , G10L3/02
摘要： PROBLEM TO BE SOLVED: To eliminate the considerable degradation of a waveform and also to make the throughput reducible by calculating amplitude data of an original signal at respective corrected sampling positions from preceding and succeeding data by interpolation processings and changing the read rate of the original signal by outputting the data with an original sampling rate. SOLUTION: A change quantity is calculated by corresponding to a pitch fluctuation absorbing portion by a tempo conversion and a fluctuating portion based on pitch instruction information based on respective sampling positions of the original signal at the time of changing the sampling interval of the original signal based on tempo instruction information. Then, amplitude data of the original signal at respective points of sampling times corrected by this change quantity are calculated from preceding and succeeding data by interpolation processings and the read rate of the original signal is changed by outputting the data with the original sampling rate. In this device, a pitch/tempo converting part 2 inputs pitch instruction information psrt and tempo instruction information tsft to convert the pitch and the tempo of the original signal based on these information.

4. 发明专利

JPH09258735A ELECTRONIC MUSICAL INSTRUMENT 失效
公开(公告)号：JPH09258735A
公开(公告)日：1997-10-03
申请号：JP8895896
申请日：1996-03-19
申请人： KAWAI MUSICAL INSTR MFG CO
发明人： TAKAUJI KIYOMI
IPC分类号： G10H7/02 , G10H7/12
摘要： PROBLEM TO BE SOLVED: To provide an electronic musical instrument provided with a waveform memory that can cope with an optional read system with small capacity by storing compressed waveform sample data and thawing data for data to be read next. SOLUTION: A waveform memory built in a musical sound generating circuit is continuously stored with frames Q-Z with waveform data partitioned every specified number. Each frame is 8 bits × 8 words, each word is stored with compressed sample data T0-T6 with the musical sound waveform sample value compressed by a difference coding system, and predictive quantized data (u). This predictive quantized data (u) is thawing data required to expand the compressed waveform sample data of the frame with the possibility of being read next. The frame T, for instance, is stored with the thawing information (u) of the following frame U, and the thawing information of the frame T is stored in the preceding frame S.

5. 发明专利

JP2628401B2 失效
公开(公告)号：JP2628401B2
公开(公告)日：1997-07-09
申请号：JP20135590
申请日：1990-07-31
IPC分类号： G10H7/02 , G10H7/04 , G10H7/12

6. 发明专利

JPH05297872A 失效
公开(公告)号：JPH05297872A
公开(公告)日：1993-11-12
申请号：JP12567692
申请日：1992-04-18
申请人： YAMAHA CORP
发明人： OKAI YOICHIRO
IPC分类号： G10H1/053 , G06F17/10 , G10H1/16 , G10H7/08 , G10H7/12 , H03B28/00 , G06F15/31
摘要： PURPOSE:To provide the musical tone synthesizing device which generates a complicated and rich musical tone like a natural musical instrument. CONSTITUTION:A signal PD showing the operation of a pedal 4 is generated by a differentiator 11, processed by an accumulation part 21, etc., and inputted to loop circuits 31-33. The loop circuits 31-33 synthesize musical tone signals; which are converted by a multiplier 21 and inputted to the subtraction input of the accumulation part 21. Then the influence of the excited musical tone signals on air blown in an organ air cylinder and the standing air in it is simulated.

7. 发明专利

JPH04348391A ENVELOPE GENERATOR 失效
公开(公告)号：JPH04348391A
公开(公告)日：1992-12-03
申请号：JP13585891
申请日：1991-05-11
申请人： KAWAI MUSICAL INSTR MFG CO
发明人： RARUFU DOITSUCHIE , RESURII JIEI DOITSUCHIE
IPC分类号： G10H1/057 , G10H1/18 , G10H7/00 , G10H7/12
摘要： PURPOSE:To realize various musical sounds by performing a time-division data shifting process for the level value of a calculated envelope waveform as the arithmetic proceeds, and then generating envelope waveforms in various curve shapes and complicate waveform shapes polyphonically. CONSTITUTION:Each amplitude value of the envelope waveform is calculated from A'=KA+N (A: old amplitude value, A': new amplitude value). The variation width gradually increases when K is set to >1 and gradually decreases when 0 and gradually decreases when

8. 发明专利

JPH02251996A MUSICAL SOUND INFORMATION ARITHMETIC SYSTEM 失效
公开(公告)号：JPH02251996A
公开(公告)日：1990-10-09
申请号：JP7460189
申请日：1989-03-27
申请人： KAWAI MUSICAL INSTR MFG CO
发明人： TAKAUJI KIYOMI , WASHIYAMA YUTAKA
IPC分类号： G10H7/00 , G10H1/043 , G10H1/057 , G10H7/12
摘要： PURPOSE:To facilitate decision making processing by detecting the variation rate of a current value reaching '0' and employing an arithmetic result as a target value in accordance with the detection result. CONSTITUTION:The variation in the variation rate of the current value to '0' is detected by arithmetic which is performed toward the target value and this arithmetic result is used as the target value. Namely, the target value X from a target value generator 11 and the parameter SP from a parameter generator 12 are supplied to an envelope computing element 13 and the arithmetic to the target value is performed on the basis of the parameter SP as to the current value Y. A new current value Y which is the arithmetic result is store din an envelope memory 14 by every channel and the new current value is outputted as a envelope data ED and also supplied to the envelope computing element 13. Consequently, it is not necessary to vary the contents of a decision value for decision making or the processing of finding the decision value, and the decision making processing is facilitated.

9. 发明专利

JPS5859496A MUSICAL SOUND GENERATOR HAVING INDEPENDENT HIGHER HARMONIC VARYING WITH TIME 失效
公开(公告)号：JPS5859496A
公开(公告)日：1983-04-08
申请号：JP12372582
申请日：1982-07-15
申请人： KAWAI MUSICAL INSTR MFG CO
发明人： RARUFU DOITSUCHIE
IPC分类号： G10H7/08 , G10H1/14 , G10H7/12

10. 发明专利

JPS5735476B2 JPS5735476B2 - 失效
公开(公告)号：JPS5735476B2
公开(公告)日：1982-07-29
申请号：JP2751673
申请日：1973-03-08
IPC分类号： G10H7/02 , G10H7/12
CPC分类号： G10H7/12

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