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41. 发明专利

JPH10171458A WAVEFORM GENERATOR 失效
公开(公告)号：JPH10171458A
公开(公告)日：1998-06-26
申请号：JP35244396
申请日：1996-12-13
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI
IPC分类号： G10H7/00 , G10H7/02
摘要： PROBLEM TO BE SOLVED: To provide a waveform generator suitable for a scratch processing and a scrabble reproduction. SOLUTION: A wave sample is read from wave memory 17 based on a reading address generated by an address counter 33, and is specifically processed by an interpolation circuit 34, a sound volume change control circuit 35, a channel accumulator 36, and an effect circuit 37 respectively for being outputted to a digitalanalog converter 19. In a case of scratch reproduction, it is judged whether or not a change in a manipulated variable of an operating knob such as a jog dial is smaller than a fixed value, and if it is smaller than the fixed value, updating the address outputted from the address counter 33 is stopped. Thus, noise can be prevented from being generated when a direction of waveform reproduction is reversed. Further, in the case of scrabble reproduction, a read address is updated according to a difference between the read address and a time cursor position operated by the operating knob.

42. 发明专利

JPH1049170A SOUND SOURCE DEVICE 失效
公开(公告)号：JPH1049170A
公开(公告)日：1998-02-20
申请号：JP22062096
申请日：1996-08-02
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI
IPC分类号： G10H7/00
摘要： PROBLEM TO BE SOLVED: To make it possible to execute sound recording waveform processing and reproducing waveform processing without complexing device constitution so much by loading a first or second prescribed program on a signal processing circuit (DSP) and parallel performing both of the sound recording waveform processing and the reproducing waveform processing. SOLUTION: The signal processing circuit 205 performs individually signal processing for the musical sound waveform data from a mixer 204 at every channel to return again the processed result to the mixer 204. At this time, the circuit 205 obtains the delayed data by using a delay memory 111 at need. The function of the signal processing circuit 205 is controlled by a loaded microprogram, and performs the signal processing such as waveform processing or effect giving, etc., at the time of sampling and resampling. Then, the signal processing circuit 205 performs the signal processing for the musical sound waveform supplied from a waveform memory 109 to sound record the result, and supplies an output performed with the signal processing of the musical waveform supplied from the waveform memory 109 to an external sound system.

43. 发明专利

JPH08234785A SOUND SOURCE DEVICE 失效
公开(公告)号：JPH08234785A
公开(公告)日：1996-09-13
申请号：JP19811795
申请日：1995-07-11
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI
IPC分类号： G10H1/18 , G10H1/00 , G10H1/02 , G10H7/02 , G10K15/12
摘要： PURPOSE: To provide a simple sound source device with a small circuit scale by cumulating a processing result of time division each channel in the inside of the sound source device without outputting to the outside and transferring to effect giving processing. CONSTITUTION: In a storage means of a first program performing processing in plural each time division channels, a second program performing channel cumulative processing and a third program performing the effect giving processing and a waveform operation part 104 performing first, second and third programs in time division, in the first program, the waveform data are generated and outputted at a time division channel period, and in the second program, the output each channel waveform data are cumulated and outputted ranging over all channels, and in the third program, the musical sound data giving the effect to the output are outputted.

44. 发明专利

JPH08185184A WAVEFORM PROCESSING DEVICE 失效
公开(公告)号：JPH08185184A
公开(公告)日：1996-07-16
申请号：JP33744294
申请日：1994-12-28
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI
IPC分类号： G10H7/02 , G10H1/02 , G10H1/043 , G10H1/057
摘要： PURPOSE: To make small the scales of a compression circuit for writing data and an expansion circuit for reading data in a memory performing delay processing. CONSTITUTION: A multiplication output from a multiplier 33 is made to pass through a bypass circuit L2, an addition and subtraction output from an adder- subtractor 39 is supplied to a variable shifter 37 through an exponential generator 42, and shifted by an exponential section data EXP2 from the exponential generator 42, and data is compressed. The compressed data is written in a DRAM through a DRAM I/O 44. The compressed data read from the DRAM is supplied to the variable shifter 37 through a DRAM I/O 45, and the compressed data is shifted and expanded in accordance with exponential section data EXP1.

45. 发明专利

JPH0895562A POWER SAVING FOR SIGNAL PROCESSOR 失效
公开(公告)号：JPH0895562A
公开(公告)日：1996-04-12
申请号：JP22672194
申请日：1994-09-21
申请人： YAMAHA CORP
发明人： WACHI MASATADA , NAKADA TAKUYA , ICHIKI TETSUJI
IPC分类号： G06F1/32 , G10H1/00 , G10H1/02 , G10H1/18
摘要： PURPOSE: To save power by switching a signal processing means to a state of regular power consumption performing prescribed signal processing and supplying an output signal and the state of low power consumption according to an input signal by instruction of a mode instruction means. CONSTITUTION: A sound source 1 forms a musical sound signal based on a musical sound parameter supplied from a CPU 7, and a digital signal processor(DSP) 2 operates using a DRAM 3, and e.g. it gives an effect according to an effect parameter supplied from the CPU 7 to the musical sound, and it pronounces by a sound system 4 (the state of regular power consumption). Further, a power saving switch 6a is provided on a panel 6, and on/off of a power saving mode is instructed manually. Then, when the power saving switch is turned on, by depressing a sequencer program mode switch, the device enters a sequencer program mode, and the CPU 7 supplies a stand-by signal to the DSP 2, and the DSP 2 makes the DRAM 3 a stand-by mode, and it reduces power consumption.

46. 发明专利

JPH0830950B2 失效
公开(公告)号：JPH0830950B2
公开(公告)日：1996-03-27
申请号：JP498788
申请日：1988-01-14
申请人： YAMAHA CORP
发明人： KANEHARA MAMORU , ICHIKI TETSUJI
IPC分类号： G10H1/00

47. 发明专利

JPH07319474A ELECTRONIC MUSICAL INSTRUMENT 失效
公开(公告)号：JPH07319474A
公开(公告)日：1995-12-08
申请号：JP7942495
申请日：1995-03-11
申请人： YAMAHA CORP
发明人： KUDO MASAKI , ICHIKI TETSUJI , YANASE TSUTOMU , OGI TOKIO
IPC分类号： G10H7/00 , G10H1/08
摘要： PURPOSE:To freely control the delay feeling and to improve the playing effect by delaying the start of sound generation of musical sound signal by either one of two musical sound signal penerating circuits and variably controlling delay time. CONSTITUTION:In two musical sound signal generating circuits 20 and 21, musical sound signals are respectively generated in a digital form having tone colors in accordance with tone color information with pitches corresponding to a key code KC given by a buffer register 18. Moreover, each circuit 20 and 21 respectively generates musical sound signals having pitches corresponding to common specified pitches in accordance with the code KC. In this case, the start of sound generation of musical sound signals in either one of the circuits is delayed with respect to another one and a delayed double playing effect is realized. Wherein, in accordance with the selected tone color, whether on not the delaying is applied and which circuit is to be delayed may be controlled. The delay feeling is freely controlled by variably controlling the delay time.

48. 发明专利

JPH07160262A SOUND SOURCE PARAMETER SUPPLYING DEVICE 失效
公开(公告)号：JPH07160262A
公开(公告)日：1995-06-23
申请号：JP33987193
申请日：1993-12-07
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI
IPC分类号： G10H1/24 , G10H1/00 , G10H1/02
摘要： PURPOSE:To freely adjust the output timing of musical sound parameters by providing a parameter supplying means which reads musical sound parameters from each storage area of a parameter storage means and supplies them to a musical sound generating means. CONSTITUTION:A parameter supplying means changes a channel number based on the time from the beginning of a pipeline control of a prescribed channel number to the start of a use of a musical sound parameter. The musical sound parameters are stored in DRAMs 11 to 1N while using the changed channel number as write addresses. The musical sound parameters, which are used in each processing phase of each channel that controls pipelines, are read from each storage area of the DRAMs 11 to 1N while using the channel number being specified by a timing generating section 1 as read addresses and are supplied to a musical sound generating means. Thus, musical sound parameters are read from the DRAMs 11 to 1N with a good process timing of each processing phase of the pipeline controls and the output timing is freely adjusted.

49. 发明专利

JPH0612069A DIGITAL SIGNAL PROCESSOR 失效
公开(公告)号：JPH0612069A
公开(公告)日：1994-01-21
申请号：JP3586293
申请日：1993-02-24
申请人： YAMAHA CORP
发明人： ICHIKI TETSUJI
IPC分类号： G10H1/00 , G10H1/02 , G10H1/12 , G10K15/12 , H04S1/00
摘要： PURPOSE:To enable high-speed processing even when the use efficiency of a computing element is high and the plural kinds of different processing are performed. CONSTITUTION:This device is provided with selectors 51-54 for selecting data to be supplied to the respective input terminals of a full adder 57 and a multiplier 58, filter and reverberate registers 55 and 56 to write/read the added result of the full adder 57, and delay elements D1-D9 and 3D to delay data interposed suitably between these filters just for prescribed time. The selection of the selectors 51-54 and the write/read of the filter register 55 and reverberate register 56 are controlled by control programs corresponding to arithmetic. The plural control programs are provided corresponding to arithmetic and perform control so as not to execute the different kinds of arithmetic at the same timing in the full adder 57 and the multiplier 58.

50. 发明专利

JPH01182889A AUTOMATIC PLAYING AND RECORDING DEVICE 失效
公开(公告)号：JPH01182889A
公开(公告)日：1989-07-20
申请号：JP498888
申请日：1988-01-14
申请人： YAMAHA CORP
发明人： KANEHARA MAMORU , ICHIKI TETSUJI
IPC分类号： G10H1/00
摘要： PURPOSE:To re-record playing data repeatingly in a same block by setting a playing data recording position to a position, which is stored in a storing means, at first when an operating mode is selected to be a re-record mode, stopping operation in a recording stand-by condition and switch-setting the operating mode to a recording mode when key-on data are generated. CONSTITUTION:When correction or addition is executed to the playing data to be just recorded, an operating mode control means 5 returns the playing data storing position by a playing data recording means 2 to the position, which is stored in a recording position storing means 3, in correspondence to the operation of a re-record mode selecting means 4 and sets the operating mode of the recording means 2 to the recording stand-by mode. When the key-on data are generated by the playing start of music in this recording stand-by condition, the operating mode control means 5 switches and sets the operating mode of the playing data recording means 2 to the recording mode with synchronizing to this key-on. Thus, the playing data can be re-recorded in the same recording block by repeating many times.

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