公开(公告)号：US4472993A

公开(公告)日：1984-09-25

申请号：US420825

申请日：1982-09-21

申请人： Tsuyoshi Futamase ,  Mitsumi Kato

发明人： Tsuyoshi Futamase ,  Mitsumi Kato

IPC分类号： G10H1/043 ,  G10H1/00 ,  G10H1/04 ,  G10H1/053 ,  G10H1/12 ,  G10H7/00 ,  G01H1/04

CPC分类号： G10H1/0091 ,  G10H1/125 ,  G10H2210/281 ,  G10H2250/115 ,  Y10S84/04 ,  Y10S84/26

摘要： A sound effect imparting device for an electronic musical instrument is capable of imparting a plurality of desired sound effect such as vibrato and reverberation effects to a digital musical tone generated from the electronic musical instrument. The device comprises a digital arithmetic operation unit constructed with a combination of adders, multipliers, delay circuits, etc., a control unit, a parameter memory and a read-out unit.By control data and parameter data which are respectively read out from the control unit and the parameter memory by means of the read-out unit, switching of the operation mode of the digital arithmetic operation unit is controlled in a time-sharing manner, whereby a plurality of sound effects are imparted to a musical tone through digital arithmetic operations.

摘要翻译： 用于电子乐器的声音效果赋予装置能够对从电子乐器产生的数字乐音赋予多种期望的声音效果，例如颤音和混响效果。 该装置包括由加法器，乘法器，延迟电路等的组合构成的数字运算单元，控制单元，参数存储器和读出单元。 通过借助于读出单元从控制单元和参数存储器分别读出的控制数据和参数数据，以分时方式控制数字运算单元的操作模式的切换，由此 通过数字算术运算将多种声音赋予乐音。

公开(公告)号：US5216189A

公开(公告)日：1993-06-01

申请号：US443660

申请日：1989-11-29

申请人： Mitsumi Kato

发明人： Mitsumi Kato

IPC分类号： G10H1/02 ,  G10H1/057 ,  G10H7/00 ,  G10H7/02

CPC分类号： G10H7/02 ,  G10H1/02 ,  G10H1/057 ,  G10H7/008 ,  G10H2210/221

摘要： An electronic musical instrument effects the slur on several continuous notes when the slur is selected. The slur performance is detected based on performance information which is generated when performing the keyboard. Then, states of musical tones to be generated are varied from the first note to the last note in the slurred notes in accordance with a line or a curve corresponding to the predetermined musical factor to be detected. Preferably, this musical factor may be the tone color, key-depression intensity, pitch difference between the first note and last note in the slurred notes. Further, it is possible to select desirable one of the preset lines or curves whose data are stored in a memory.

摘要翻译： 当选择sl时，电子乐器会对几个连续音符造成诽谤。 基于在执行键盘时产生的性能信息来检测诽谤性能。 然后，根据与要检测的预定乐曲相对应的线或曲线，要生成的乐音的状态从在第一音符到最后音符中变化。 优选地，该音乐因素可以是音调颜色，按键抑制强度，在模糊音符中的第一音符和最后音符之间的音调差。 此外，可以选择其数据存储在存储器中的预设线或曲线中的期望的一个。

公开(公告)号：US4731835A

公开(公告)日：1988-03-15

申请号：US22582

申请日：1987-03-10

申请人： Tsuyoshi Futamase ,  Mitsumi Kato

发明人： Tsuyoshi Futamase ,  Mitsumi Kato

IPC分类号： G10H1/00 ,  G10H1/02 ,  G10H7/00 ,  G10H7/02 ,  G10K15/12 ,  H03G5/04 ,  H03G3/00

CPC分类号： G10K15/12 ,  G10H1/0091 ,  G10H1/02 ,  G10H7/00 ,  G10H7/02 ,  H03G5/04 ,  G10H2210/281 ,  Y10S84/26

摘要： In a reverberation tone generating apparatus a digital memory device is used as a delay element. Amplitude data obtained by sampling an input musical tone at a predetermined period are sequentially stored in the digital memory device. The readout of the amplitude data stored before a desired delay time is equal to the readout of the data regarding the input musical tone delayed the desired delay time. By imparting the desired reverberation characteristics to the delayed amplitude data, reverberation tone of the input musical tone is produced. In a modified embodiment, an input musical tone is divided into a plurality of frequency bands and different reverberation characteristics are added to the divided input musical tones respectively. This utilization of the digital memory as the delay element prevents degrading S/N ratio even if the delay time or the reverberation time is elongated and makes it possible to easily change the reverberation time, thereby enabling to generate a reverberation tone having the same quality as a natural reverberation tone.

摘要翻译： 在混响音产生装置中，使用数字存储装置作为延迟元件。 通过以预定周期取样输入乐曲而获得的振幅数据被顺序存储在数字存储装置中。 在期望的延迟时间之前存储的振幅数据的读出等于关于输入音调的数据的读出延迟了期望的延迟时间。 通过将所需的混响特性赋予延迟振幅数据，产生输入音调的混响音。 在一个修改实施例中，输入的音调被分成多个频带，并且不同的混响特性分别被加到划分的输入乐曲上。 数字存储器作为延迟元件的这种利用即使延迟时间或混响时间延长也能够防止降低S / N比，并且可以容易地改变混响时间，从而能够产生具有相同质量的混响​​音 一种自然的混响音。

公开(公告)号：USRE30834E

公开(公告)日：1981-12-29

申请号：US154767

申请日：1980-05-30

申请人： Koji Niimi ,  Mitsumi Kato

发明人： Koji Niimi ,  Mitsumi Kato

IPC分类号： G10H7/00 ,  G10H7/06

CPC分类号： G10H7/06 ,  Y10S84/02 ,  Y10S84/10

摘要： The musical instrument is of a waveform memory device read out type and comprises a frequency information generator for generating a plurality of sets of frequency informations each set consisting of a subplurality of frequency informations and corresponding to each of the tone pitches of the depressed keys in a keyboard, a selector for selecting one, at a time and one after another, of the subplurality of frequency informations generated by the frequency information generator for each one key depressed, an accumulator for repeatedly accumulating the frequency information selected by the selector to produce an increasing accumulated value, a waveform memory device for storing the amplitude values at successive sampling points in one period of a sine wave utilized to form a desired musical waveform, a comparator for comparing the accumulated value with a preset value and controlling the selecting operation of the selector during the operation of the accumulator. The increasing accumulated value is used to address the waveform memory device to read out therefrom amplitude samples to form a desired musical tone wave form. The output of the waveform memory means is imparted with a volume envelope generated by an envelope waveform generator and then produced as a performance tone by a sound system.

公开(公告)号：US5292997A

公开(公告)日：1994-03-08

申请号：US568675

申请日：1990-08-16

申请人： Mitsumi Kato ,  Yasuhiro Kawano

发明人： Mitsumi Kato ,  Yasuhiro Kawano

IPC分类号： G10H1/057

CPC分类号： G10H1/057 ,  G10H2250/161

摘要： An envelope shape generation device includes an envelope shape memory storing envelope shape data, a touch information generation circuit for generating touch information, an envelope shape data reading circuit for reading out the envelope shape data prestored in the envelope shape memory in response to the touch information to form an envelope shape signal. The envelope shape reading circuit includes a first envelope reading circuit for reading out a waveform section from an attack portion to a portion immediately before starting of a release envelope shape in response to key-on information and a second envelope shape reading circuit for reading out a release envelope shape following the waveform section read by a first envelope reading circuit in response to key-off information, and a release envelope correction circuit for correcting a head value of the read out release envelope shape to agree with the read out envelope shape value of the first envelope shape section so that the second envelope shape section is connected smoothly to the first envelope shape section.

摘要翻译： 包络形状生成装置包括存储包络形状数据的包络形状存储器，用于生成触摸信息的触摸信息生成电路，用于响应于触摸信息读出预先存储在包络形状存储器中的信封形状数据的信封形状数据读取电路 以形成信封形状信号。 信封形状读取电路包括：第一包络线读取电路，用于响应于键入信息，从攻击部分到刚刚开始释放包络形状的部分读出波形部分;以及第二包络形状读取电路，用于读出 随着由第一包络读取电路响应于关键信息读取的波形部分的释放包络形状，以及用于校正读出释放包络形状的头值以与读出的包络线形状值一致的释放包络校正电路， 第一包络形状部分，使得第二包络形状部分平滑地连接到第一包络形状部分。

公开(公告)号：US4554854A

公开(公告)日：1985-11-26

申请号：US546892

申请日：1983-10-31

申请人： Mitsumi Kato

发明人： Mitsumi Kato

IPC分类号： G10H1/40 ,  G10H1/42 ,  G10H1/46 ,  G10H7/02

CPC分类号： G10H1/42 ,  Y10S84/12

摘要： An automatic rhythm performing apparatus capable of producing a rhythmic tone of a plural-tone-source rhythmic musical instrument such as a snare drum comprises a plurality of signal producing devices which produce a plurality of rhythmic tone signals corresponding to the respective tone sources of the single instrument. A control device controls respective signal levels of the rhythmic tone signals and a combining device combined the rhythmic tone signals at signal levels controlled by the control device to provide a combined signal corresponding to the rhythmic tone of the instrument, thereby providing a desired volume relationship of the respective component tones constituting the whole rhythmic tone of the instrument.

公开(公告)号：US4524666A

公开(公告)日：1985-06-25

申请号：US531437

申请日：1983-09-12

申请人： Mitsumi Kato

发明人： Mitsumi Kato

IPC分类号： G10H1/057 ,  G10H7/00 ,  G10H7/04 ,  G10H1/02 ,  G10H1/40

CPC分类号： G10H7/04 ,  G10H1/0575 ,  G10H7/008 ,  Y10S84/12

摘要： A musical tone forming system includes a waveform storage device for storing data representative of an attack portion of a musical tone waveform and data representative of part of the other portion of the musical tone waveform following the attack portion. An address device addresses the waveform storage device to first read the data representative of the attack portion and to then repeatedly read the part of the waveform from the waveform storage device to thereby form a musical tone signal. There is provided a device for generating data varying with time. The address device feeds an address data to the waveform storage device in accordance with the time-varying data to randomly designate as a starting address one of those addresses of the waveform storage device storing the data of the part of the waveform, thereby realizing a noisy nature characteristic of a percussion instrument.

摘要翻译： 乐音形成系统包括波形存储装置，用于存储表示乐音波形的攻击部分的数据，以及表示攻击部分之后的音乐波形的其他部分的一部分的数据。 地址设备寻址波形存储设备以首先读取表示攻击部分的数据，然后从波形存储设备重复读取波形的一部分，从而形成乐音信号。 提供了用于产生随时间变化的数据的装置。 地址装置根据时变数据将地址数据提供给波形存储装置，以随机指定存储波形部分数据的波形存储装置的那些地址之一的起始地址，从而实现噪声 打击乐器的性质特征。

公开(公告)号：US5687105A

公开(公告)日：1997-11-11

申请号：US708788

申请日：1996-09-09

申请人： Hideo Miyamori ,  Masatada Wachi ,  Mitsumi Kato

发明人： Hideo Miyamori ,  Masatada Wachi ,  Mitsumi Kato

IPC分类号： G06F9/32 ,  G06F9/38 ,  G06F17/10 ,  G10H1/02 ,  G10H1/12 ,  G10H7/00 ,  G10H7/08 ,  G10H7/10

CPC分类号： G10H1/125 ,  G10H7/002 ,  Y10S84/09

摘要： A digital signal processor (i.e., DSP) is employed by an electronic musical instrument. The contents of operational processes to be executed by the DSP can be arbitrarily set in accordance with filtering operations of the filters to be realized. A processing device to be embodied by the DSP at least contains a microprogram memory, a coefficient register, a delay memory and a processing portion. A desired set of coefficients are read from the coefficient register in accordance with a first address signal, while a desired program is read from the microprogram memory in accordance with a second address signal. Each program contains at least one operational command or one instruction. The value of each of the first and second address signals is periodically changed in each sampling period. During a writing operation of the delay memory, results of the operational processes effected by the processing portion are written into the delay memory, while the processing portion effects the operational processes on the musical tone signals, sequentially inputted thereto, in accordance with the desired program to be repeatedly executed for the desired set of coefficients. When a reading operation of the delay memory is designated, the processing portion effects the operational processes on data read from the delay memory. Thus, the processing device can perform the pipeline processing effectively on plural series of musical tone signals with a reduced storage capacity of the microprogram memory.

摘要翻译： 数字信号处理器（即DSP）由电子乐器采用。 要由DSP执行的操作过程的内容可以根据要实现的滤波器的滤波操作任意设置。 由DSP实现的处理装置至少包含微程序存储器，系数寄存器，延迟存储器和处理部分。 根据第一地址信号从系数寄存器读取期望的系数集合，同时根据第二地址信号从微程序存储器读取期望的程序。 每个程序至少包含一个操作命令或一个指令。 在每个采样周期中周期性地改变第一和第二地址信号中的每一个的值。 在延迟存储器的写入操作期间，由处理部分执行的操作处理的结果被写入延迟存储器，而处理部分根据期望的程序对顺序输入的乐音信号进行操作处理 对于期望的系数集合被重复执行。 当指定延迟存储器的读取操作时，处理部分对从延迟存储器读取的数据进行操作处理。 因此，处理装置可以在微程序存储器的存储容量减小的情况下对多个乐音信号系列进行有效的流水线处理。

公开(公告)号：US5036541A

公开(公告)日：1991-07-30

申请号：US161344

申请日：1988-02-19

申请人： Mitsumi Kato

发明人： Mitsumi Kato

IPC分类号： G10H1/12

CPC分类号： G10H1/125 ,  G10H2210/201 ,  G10H2210/251 ,  G10H2250/061

摘要： A modulation effect device is implemented by utilizing a fact that a phase or frequency of an output signal from a digital filter can be varied by varying a filter-coefficient according to a lapse of time. A musical tone signal inputted into the digital filter is phase-or frequency-modulated in accordance with the variation of the filter coefficient, thereby imparting such modulation effect as vibrato, chorus or ensemble (symphonic chorus) to the musical tone signal.

摘要翻译： 通过利用来自数字滤波器的输出信号的相位或频率可以通过根据时间的流逝改变滤波器系数而改变的事实来实现调制效应器件。 输入到数字滤波器的乐音信号根据滤波器系数的变化进行相位或频率调制，从而赋予音调信号等颤音，合唱或合奏（交响音）的调制效果。

公开(公告)号：US4723467A

公开(公告)日：1988-02-09

申请号：US760351

申请日：1985-07-29

申请人： Mitsumi Kato

发明人： Mitsumi Kato

IPC分类号： G10H1/42 ,  G10H1/46

CPC分类号： G10H1/42 ,  Y10S84/12

摘要： An automatic rhythm performing apparatus capable of producing a rhythmic tone of a plural-tone-source rhythmic musical instrument such as a snare drum comprises a plurality of signal producing devices which produce a plurality of rhythmic tone signals corresponding to the respective tone sources of the single instrument. A control device controls respective signal levels of the rhythmic tone signals and a combining device combined the rhythmic tone signals at signal levels controlled by the control device to provide a combined signal corresponding to the rhythmic tone of the instrument, thereby providing a desired volume relationship of the respective component tones constituting the whole rhythmic tone of the instrument.

摘要翻译： 能够产生诸如小鼓的多音源节奏乐器的节奏色调的自动节律演奏装置包括多个信号产生装置，其产生与单个音源的各个音源对应的多个节奏音调信号 仪器。 控制装置控制节奏色调信号的各个信号电平，并且组合装置将由控制装置控制的信号电平的节奏色调信号组合以提供对应于乐器的节奏色调的组合信号，从而提供期望的音量关系 相应的组成音调构成乐器的整个节奏音调。