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41. 发明专利

JPH08211873A EFFECT IMPARTING DEVICE 失效
公开(公告)号：JPH08211873A
公开(公告)日：1996-08-20
申请号：JP30311995
申请日：1995-11-21
申请人： YAMAHA CORP
发明人： FUJITA YOSHIO , OKAMURA KAZUHISA
IPC分类号： G10H1/18 , G10H1/00 , G10H1/02 , G10H1/24 , G10K15/12
摘要： PURPOSE: To provide an effect imparting device capable of imparting the same kinds on sound effects whose characteristics are different to musical sound data in one sampling time of the musical sound data. CONSTITUTION: Plural effect programs corresponding to plural sound effects to be imparted to musical sound data are stored in an effect program memory 22. An effect arithmetic part 19 imparts sound effects to supplied musical sound data by successively executing effect programs stored in the effect program memory 22. A mixer 18 inputs musical sound data supplied from the outside and plural musical sound data imparted with various sound effects outputted from the effect arithmetic part 19 and mixes either plural musical sound data among inputted musical sound data based on mixing information outputted from a mixing information supplying part 20 to output them.

42. 发明专利

JPH08146953A SIGNAL PROCESSOR 失效
公开(公告)号：JPH08146953A
公开(公告)日：1996-06-07
申请号：JP31134694
申请日：1994-11-22
申请人： YAMAHA CORP
发明人： OKAMURA KAZUHISA
IPC分类号： G10H1/02 , G06F9/22 , G10K15/04 , H03H17/02 , H03M7/50
摘要： PURPOSE: To selectively obtain dummy exponential function value data or linear function value data by shifting multiplication data outputted from a multiplying means according to the contents of a supplied exponent data part. CONSTITUTION: A selector A11 selects and converts one of data from a counting register 10 and an internal bus and outputs the exponent data part of the converted data to a shifter 14 and the data part to a multiplier 12. The multiplier 12 multiplies data from the selector A11 by data from a selector B13 and outputs the result to the shifter 14. The shifter 14 shifts the output of the multiplier 12 with the exponent data supplied from multiplication data selector A11. An adder 15 adds the data outputted from the shifter 14 and data outputted from a selector C19 together and supplies the result to a full-wave rectifying means 19. Consequently, count data on dummy exponent characteristics or coefficient data on linear characteristics are obtained.

43. 发明专利

JPH06222761A ELECTRONIC MUSICAL INSTRUMENT 失效
公开(公告)号：JPH06222761A
公开(公告)日：1994-08-12
申请号：JP34154891
申请日：1991-12-24
申请人： YAMAHA CORP
发明人： TAKEDA FUMIMITSU , OKAMURA KAZUHISA
IPC分类号： G10H1/00 , G10H1/18 , G10H7/00
摘要： PURPOSE:To provide the electronic musical instrument which can share data and transfer data fast by equipping the electronic musical instrument with a selecting means which selects a 1st and a 2nd arithmetic processing means according to the contents of data transfer between the 1st arithmetic processing means generating music information corresponding to playing operation and an arithmetic means controlling a sound source according to the music informa tion. CONSTITUTION:A communication control part 30 consists of a communication control circuit 31 which controls a data communication between a music information generation part 10 and a sound source control part 20 and a RAM 32 for holding data. The communication control part 30 performs switching operation according to the contents of the data transfer between the CPU 16 (music information generation part 10) and CPU 21 (sound source control part 20) and selects and connects one of them to the RAM 32. This constitution enables fast transfer of a large amount of data through the RAM 32 and also allows the CPUs 16 and 21 to share the RAM 32, so the data can be shared.

44. 发明专利

JPH04115295A MUSICAL SOUND CONTROLLER 失效
公开(公告)号：JPH04115295A
公开(公告)日：1992-04-16
申请号：JP23440890
申请日：1990-09-06
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI , KOZUKI KOICHI , OKAMURA KAZUHISA
IPC分类号： G10H1/057 , G10H1/18 , G10H1/22
摘要： PURPOSE:To realize the best suppression and quick attenuation control over a click noise by varying and controlling a damping rate according to the sound volume level or envelope waveform signal level of a musical sound signal. CONSTITUTION:This musical sound controller is equipped with a means 25 which detects the level of an envelope waveform signal for amplitude level/ musical sound control over the musical sound signal, a damping rate determining means which determines the quick attenuation rate in damping control corresponding to the detected level, and a damping control means 10 which attenuates the sound volume envelope waveform signal speedily at the determined rate when the sound volume of the musical sound is decreased. Then the quick attenuation rate (damping rate) is made lower and lower as the amplitude level of the musical sound signal is higher and higher, and made higher and higher as the amplitude level is lower and lower to make the inclination of the quick attenuation gentle when the amplitude level of the musical sound signal is large, thereby suppressing the click noise. When the amplitude level is small, on the other hand, the original click noise is inconspicuous and the quick attenuation is completed early.

45. 发明专利

JPH0480797A MUSICAL SIGNAL PROCESSOR 失效
公开(公告)号：JPH0480797A
公开(公告)日：1992-03-13
申请号：JP19401990
申请日：1990-07-24
申请人： YAMAHA CORP
发明人： SUZUKI HIDEO , OKAMURA KAZUHISA
IPC分类号： G10H1/12 , H03H17/00 , H03H17/02
摘要： PURPOSE:To enable circuit design which does not required fast time-division arithmetic much, namely, is reasonable by interposing plural data selecting circuits in each specific delay stage in a delay circuit loop. CONSTITUTION:A cyclic register means 17 holds plural samples of musical sound signal sample data of each channel and is equipped with a series of delay circuits 31, 33, 36 - 38, 48, and 51 which hold respective sample data while delaying them in order. Those delay circuits 31, 33, 36 - 38, 48, and 51 are connected endlessly to constitute a circulation loop and plural data selecting circuits 30, 32, and 39 are interposed in every specific delay means. Then the data selecting circuits 30, 32, and 39 perform selective control over whether the input of new musical signal sample data to the delay circuit loop from a musical sound signal generating means or the circulation of data in the delay circuit loop is performed. Consequently, fast time-division arithmetic is not required to maintain a necessary sampling frequency.

46. 发明专利

JPH0468399A ENVELOPE WAVEFORM GENERATING DEVICE 失效
公开(公告)号：JPH0468399A
公开(公告)日：1992-03-04
申请号：JP18066890
申请日：1990-07-10
申请人： YAMAHA CORP
发明人： KOZUKI KOICHI , OKAMURA KAZUHISA , ICHIKI TETSUJI
IPC分类号： G10H1/057
摘要： PURPOSE:To vary the attenuation characteristic of an envelope waveform according to key-off timing by setting a specific position on the envelope waveform, detecting whether a key is turned off before the specific position or not, and performing the attenuation processing of the envelope waveform with characteristics generated at the key-off position. CONSTITUTION:The device consists of a central processing unit(CPU) 10, a key detecting circuit 13, an EG setting switch 14, a sound source circuit 16, a keyboard 18, etc. Then the specific position (DP) is provided on the envelope waveform, and the envelope is attenuated with a 1st attenuation characteristic when key-off operation is performed before the DP or with a 2nd attenuation characteristic different from the 1st attenuation characteristic when the key-off operation is performed behind the DP. Consequently, the attenuation characteristics of the envelope waveforms are selected according to the key-off timing and release play at the time of the key-off operation is made distinctive according to a performance operation state.

47. 发明专利

JP2000278277A PACKET TRANSMISSION DEVICE 失效
公开(公告)号：JP2000278277A
公开(公告)日：2000-10-06
申请号：JP7804199
申请日：1999-03-23
申请人： YAMAHA CORP
发明人： OKAMURA KAZUHISA
IPC分类号： H04L29/08 , G10H1/00 , G11B20/10 , H04L7/00 , H04L12/28 , H04S7/00 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a packet transfer device that can simply send/receive even a packet including sampling data with a sampling frequency that is twice of a usual frequency. SOLUTION: Audio data D0-D2 are respectively received from input terminals DAI0-DAI2 synchronously with a half period of a sampling clock WCK. A transmission FIFO 8a receives data D0(n)-D2(n) with a sampling period (n) at a trailing of the sampling clock WCK 1 and receives data D0(n+1)-D2(n+1) with a sampling period (n+1) at a leading of the sampling clock WCK 1. A packet assembly section 9 assembles a packet comprising a header and data blocks DA0-DA5 and outputs the packet to a link layer controller 20.

48. 发明专利

JP2000278276A PACKET TRANSMISSION DEVICE 失效
公开(公告)号：JP2000278276A
公开(公告)日：2000-10-06
申请号：JP7803899
申请日：1999-03-23
申请人： YAMAHA CORP
发明人： OKAMURA KAZUHISA
IPC分类号： H04L29/08 , G11B20/10 , H04L7/00 , H04L12/28 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To provide a packet transfer device that receives a packet including event sequence data so as to adjust a reproduction time of audio data in response to a transmission node. SOLUTION: Received audio data are outputted to an external device by using received syt time information and matching a reproduced time with a time of a cycle timer of a reception section in a reproduction timing clock synchronously with an input sampling clock at a transmitter side. The information syt read from 1st and 2nd syt reception FIFO 12k, 12l is added to a prescribed offset set for each transmission node at adder sections 18a, 18b and the sum is given to a synchronization section 19. The synchronization section 19 controls a read timing and a read pointer of the audio data from audio reception FIFO 12a-12h.

49. 发明专利

JPH10198559A SIGNAL PROCESSOR 失效
公开(公告)号：JPH10198559A
公开(公告)日：1998-07-31
申请号：JP1187997
申请日：1997-01-08
申请人： YAMAHA CORP
发明人： OKAMURA KAZUHISA
IPC分类号： G06F11/28 , G06F9/22 , G06F9/24 , G06F9/28 , G10H1/02
摘要： PROBLEM TO BE SOLVED: To provide a signal processor in which the change of a microprogram can be further flexibly operated, and convenience can be improved. SOLUTION: Plural microprograms to be executed by time-division are stored in a microprogram(MP) RAM 73, and the control signal of a step corresponding to a count value SC of a step counter 72 is supplied to the register of a DSP (digital signal processor) or the like, and an arithmetic processing according to the microprocessor is executed. Thus, only one part of the plural microprograms stored in the MP RAM 73 can be stopped or changed while the other microprograms are executed, and the number and size of the microprograms to be changed can be arbitrarily set when they are present within a prescribed range.

50. 发明专利

JPH10133659A DIGITAL SIGNAL PROCESSOR 失效
公开(公告)号：JPH10133659A
公开(公告)日：1998-05-22
申请号：JP30360796
申请日：1996-10-28
申请人： YAMAHA CORP
发明人： OKAMURA KAZUHISA
IPC分类号： G06F15/78 , G10H1/02
摘要： PROBLEM TO BE SOLVED: To easily give the effect that varies the frequency of an input sound signal without using resources other than a digital signal processor(DSP) by providing a converting means which converts coefficient data according to exponential function characteristics and outputs the converted coefficient data, etc. SOLUTION: A coefficient RAM 24 inputs the coefficient data from a CPU 1 through a data and address bus 8 and stores it in a given area. The coefficient data read out of the coefficient RAM 24 is G supplied to a 1st terminal of a selector 29. Then the coefficient data stored in the coefficient RAM 24 is rewritten by the CPU 1 in real time through the data and address bus 8 according to the exponential function characteristics. Consequently, a user can vary the coefficient at the operation of the DSP 7 for effect momentarily through the operation of an external controller to control the effect in real time.

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