公开(公告)号：US5000074A

公开(公告)日：1991-03-19

申请号：US370621

申请日：1989-06-23

申请人： Toshihiro Inoue ,  Akira Iizuka ,  Chifumi Takeuchi

发明人： Toshihiro Inoue ,  Akira Iizuka ,  Chifumi Takeuchi

IPC分类号： G10H1/00 ,  G10H7/12

CPC分类号： G10H7/12 ,  G10H1/0091 ,  G10H2210/281 ,  G10H2250/035

摘要： A variable delay circuit for delaying an input signal and being capable of changing length of this delay is provided and various modulation effects are imparted by this delay. When change in the delay length has been designated, a decay envelope is imparted to a delay output tone signal corresponding to the delay length before the change and then a rise envelope is imparted to a delay output signal corresponding to the delay length after the change. Generation of a click noise during the change in the delay length thereby is prevented. Alternatively, when the delay length is to be changed, a decay envelope is imparted to a delay output signal corresponding to the delay length before the change and, simultaneously, a rise envelope is imparted to a delay output tone signal corresponding to the delay length after the delay and the two signals are combined. Alternatively further, when the delay length is to be changed, the delay length is sequentially changed in plural steps from the delay length before the change to the delay length after the change.

摘要翻译： 提供了用于延迟输入信号并且能够改变该延迟的长度的可变延迟电路，并且通过该延迟赋予各种调制效果。 当指定了延迟长度的变化时，对与延迟长度相对应的延迟输出音信号赋予衰减包络线，然后将上升包络赋予对应于改变之后的延迟长度的延迟输出信号。 防止在延迟长度的变化期间产生点击噪音。 或者，当要改变延迟长度时，将衰减包络赋予对应于改变之前的延迟长度的延迟输出信号，同时，将上升包络赋予对应于延迟长度之后的延迟输出音信号 延迟和两个信号被组合。 或者，当要改变延迟长度时，延迟长度从改变之前的延迟长度到改变之后的延迟长度的多个步骤顺序地改变。

公开(公告)号：US5223657A

公开(公告)日：1993-06-29

申请号：US658556

申请日：1991-02-21

申请人： Chifumi Takeuchi

发明人： Chifumi Takeuchi

IPC分类号： G10H7/08 ,  G10H1/00 ,  G10H5/00 ,  G10H7/00

CPC分类号： G10H5/007 ,  G10H2250/046 ,  G10H2250/451 ,  G10H2250/521 ,  Y10S84/09 ,  Y10S84/10 ,  Y10S84/26

摘要： A musical tone generating device is capable of simulating various special playing techniques for a stringed instrument in which the harmonic spectrums of produced sound is enhanced, or otherwise altered. The device includes a delay circuit wherein an input signal thereto is delayed and output; a closed loop circuit comprising multiple feedback pathways to which the output of the delay circuit is supplied and processed therein, after which the processed signal is returned toward the delay circuit as an input signal; an excitation device in response to a predetermined control signal, generating an excitation signal and supplying it to the closed loop circuit, such that the excitation signal corresponds to an excitation vibration in the stringed instrument being simulated; and a control device wherein the predetermined control signal is generated and whereby the delay interval of the delay circuit and the processing carried out in the multiple feedback pathways are controlled.

摘要翻译： 音乐发生装置能够模拟用于弦乐器的各种特殊播放技术，其中产生的声音的谐波谱被增强或以其他方式改变。 该装置包括延迟电路，其中输入信号被延迟并输出; 一个闭环电路，包括多个反馈通道，延迟电路的输出端被提供给该反馈通路，在此之后，经处理的信号作为输入信号返回到延迟电路; 激励装置，响应于预定的控制信号，产生激励信号并将其提供给闭环电路，使得激励信号对应于被仿真的弦乐器中的激励振动; 以及控制装置，其中生成预定的控制信号，并且由此控制延迟电路的延迟间隔和在多个反馈通路中进行的处理。

公开(公告)号：US4766795A

公开(公告)日：1988-08-30

申请号：US659574

申请日：1984-10-10

申请人： Chifumi Takeuchi

发明人： Chifumi Takeuchi

IPC分类号： G10H7/08 ,  G10H7/00 ,  G10H1/14

CPC分类号： G10H7/00 ,  G10H2250/161

摘要： A musical tone signal is synthesized on the basis of a predetermined modulation operation (e.g. an FM or AM operation) employing a modulation signal and a carrier signal respectively having an audio range frequency. In a waveshape table provided for defining at least one of a modulation wave function or a carrier wave function, a wave function expressed in a logarithmic form log{f(x)} is stored. The wave function log{f(x)} read out from this waveshape table is multiplied with a coefficient k whereby the wave function of the modulation signal or the carrier signal to be used in the modulation operation is changed from f(x) to {f(x)}.sup.k. That is, k log{(f(x)}=log{f(x)}.sup.k is obtained by this multiplication and {f(x)}.sup.k is obtained by converting this log {f(x)}.sup.k to a linear form. Therefore, it is enabled to synthesize a tone having abundant frequency components by using the wave function {f(x)}.sup.k obtained by a simple operation.

摘要翻译： 基于采用调制信号和分别具有音频范围频率的载波信号的预定调制操作（例如FM或AM操作）来合成乐音信号。 在提供用于定义调制波函数或载波函数中的至少一个的波形表中，存储以对数形式log {f（x）}表示的波函数。 将从该波形表读出的波函数对数{f（x）}与系数k相乘，由此调制信号中使用的调制信号或载波信号的波函数从f（x）变为{ f（x）} k。 也就是说，通过该乘法获得k log {（f（x）} = log {f（x）} k，并且通过将该对数{f（x）} k转换成线性 因此，通过使用通过简单操作获得的波函数{f（x）} k，能够合成具有丰富频率分量的音调。

公开(公告)号：US06410838B1

公开(公告)日：2002-06-25

申请号：US09733212

申请日：2000-12-08

申请人： Chifumi Takeuchi

发明人： Chifumi Takeuchi

IPC分类号： G10H712

CPC分类号： G10H7/12 ,  G10H1/16 ,  Y10S84/09 ,  Y10S84/10

摘要： A musical sound signal synthesizer with a simple construction for synthesizing complex musical sound waveform signals including many harmonics in a peculiar form. A phase information generator 11 supplies phase information x with a sawtooth wave changing according to a phase of the musical sound to be generated via a calculator 12 to a sine wave table 13, from which output waveform information y is read out. The waveform information y is fed back to the calculator 12 via an absolute value transformer 14, a low pass filter 15 and a gain controller 16. The output waveform information y outputted from the sine table 13 is transformed nonlinearly, which is fed back to the phase information x, which makes a complex change. As a result thereof, the waveform, which is represented by waveform information outputted from the sine wave table 13, becomes peculiar for a musical sound signal synthesized by phase or frequency modulation technique.

摘要翻译： 一种具有简单结构的音乐声音信号合成器，用于以特殊形式合成包括许多谐波的复合音乐声波形信号。 相位信息发生器11根据要经由计算器12产生的乐音的相位向正弦波表13提供锯齿波改变的相位信息x，读出输出波形信息y。 波形信息y经由绝对值变换器14，低通滤波器15和增益控制器16反馈到计算器12.从正弦表13输出的输出波形信息y被非线性变换，反馈到 相位信息x，这使得复杂的变化。 结果，由正弦波表13输出的波形信息表示的波形，对于通过相位或频率调制技术合成的乐音信号而言是特有的。

公开(公告)号：US5741994A

公开(公告)日：1998-04-21

申请号：US607793

申请日：1996-02-27

申请人： Chifumi Takeuchi

发明人： Chifumi Takeuchi

IPC分类号： G10H7/08 ,  G10H5/00 ,  G10H1/08

CPC分类号： G10H5/007 ,  G10H2250/435 ,  G10H2250/525 ,  G10H2250/535 ,  Y10S84/10

摘要： A musical tone-synthesizing apparatus has a plurality of waveguide networks each including at least one waveguide, each of which has a closed loop in which a circulating signal circulates in response to an external excitation signal. The closed loop has an output through which the circulating signal is output as a waveguide output signal, and an input port through which a signal is input to be superposed on the circulating signal. A network output signal is formed based on the waveguide output signal. A connection means is connected to corresponding ones of the waveguide networks and carries out signal processing on the network output signal delivered from each of the corresponding waveguide networks, based on an external modulating signal, and inputs the resulting processed signal to the input port of the closed loop of each of the corresponding waveguide networks.

摘要翻译： 音乐合成装置具有多个波导网络，每个波导网络包括至少一个波导，每个波导具有闭环，循环信号响应于外部激励信号而循环。 闭环具有作为波导输出信号输出循环信号的输出和输入端口，通过该输入端输入信号以叠加在循环信号上。 基于波导输出信号形成网络输出信号。 连接装置连接到对应的波导网络，并且基于外部调制信号对从每个相应波导网络传送的网络输出信号执行信号处理，并将所得到的处理信号输入到 每个相应波导网络的闭环。

公开(公告)号：US5521325A

公开(公告)日：1996-05-28

申请号：US854295

申请日：1992-03-19

申请人： Chifumi Takeuchi ,  Toshifumi Kunimoto ,  Norio Suzuki ,  Takaaki Muto

发明人： Chifumi Takeuchi ,  Toshifumi Kunimoto ,  Norio Suzuki ,  Takaaki Muto

IPC分类号： G10H1/16 ,  G10H5/00 ,  G10H1/04 ,  G10H7/00

CPC分类号： G10H5/007 ,  G10H1/16 ,  G10H2250/445 ,  G10H2250/515 ,  G10H2250/521

摘要： An apparatus for synthesizing a musical tone comprises a loop circuit for circulating an input wave form signal through a delay circuit, a wave form memory, and a random modulation circuit for modulating the wave form signal stored in the wave form memory. The random modulation circuit generates a random signal, such as a noise signal. The random signal modulates address data to the wave form memory, so that the read wave form data read out from the wave form memory is delicately varied with time.

摘要翻译： 用于合成乐音的装置包括用于通过延迟电路循环输入波形信号的环路电路，波形存储器和用于调制存储在波形存储器中的波形信号的随机调制电路。 随机调制电路产生诸如噪声信号的随机信号。 随机信号将地址数据调制到波形存储器，使得从波形存储器读出的读波形数据随着时间精细变化。

公开(公告)号：US5241129A

公开(公告)日：1993-08-31

申请号：US833934

申请日：1992-02-11

申请人： Takaaki Muto ,  Chifumi Takeuchi

发明人： Takaaki Muto ,  Chifumi Takeuchi

IPC分类号： G10H7/08 ,  G10H5/00 ,  G10H7/00 ,  G10K15/12

CPC分类号： G10H5/007 ,  G10H2250/451 ,  G10H2250/521 ,  Y10S84/09 ,  Y10S84/10

摘要： An object of the present invention is to provide an electronic musical instrument which can generate a plurality of tones in spite of the inexpensive and simple structure thereof and can correct the quantity of phase delay of a closed loop in a physical model tone generator without use of any special processor such as a high-speed CPU or a dedicated numerical operation processor, not only to thereby attain performance effects of echo, chorus and the like but to simulate a performance style of repeating the operation of one string or key in the condition in which a tone corresponding to the string or key remains, without production of noise even when parameters for constituent elements of the physical model tone generator are respectively changed widely. The electronic musical instrument includes a driving waveform for storing a plurality of driving waveform data corresponding to performance information in advance, and a closed loop constituted by a shift register and a low-pass filter. The plurality of driving waveform data are supplied into the closed loop and repeatedly circulated while applying at least a delay process and a decay process onto the plurality of driving waveform data by way of time division corresponding to the performance information. As a result, a plurality of signals circulating in the closed loop are generated as a plurality of tone signals.

摘要翻译： 本发明的一个目的是提供一种电子乐器，尽管它具有廉价且简单的结构，但能够校正物理模型乐音发生器中闭环的相位延迟量，而不使用 诸如高速CPU或专用数字操作处理器的任何特殊处理器，不仅能够达到回声，合唱等的性能效果，而且可以模拟在条件中重复一个字符串或键的操作的演奏风格 即使对于物理模型音发生器的构成要素的参数分别变化，也不会产生噪声，即使对应于弦或键的音调也不会产生噪声。 电子乐器包括用于预先对应于演奏信息存储多个驱动波形数据的驱动波形，以及由移位寄存器和低通滤波器构成的闭环。 多个驱动波形数据被提供到闭环中并且通过对应于演奏信息的时分对多个驱动波形数据施加至少延迟处理和衰减处理而重复循环。 结果，产生在闭环中循环的多个信号作为多个音调信号。

公开(公告)号：US4256004A

公开(公告)日：1981-03-17

申请号：US32092

申请日：1979-04-20

申请人： Chifumi Takeuchi

发明人： Chifumi Takeuchi

IPC分类号： G10H1/053 ,  G10H7/08 ,  G10H7/10 ,  G10H1/06

CPC分类号： G10H7/105

摘要： An electronic musical instrument is of a harmonic synthesis type and is provided with an order number memory device which stores a plurality of order numbers of the harmonic components necessary to form respective tone colors, an amplitude coefficient memory device which stores a plurality of sets of amplitude coefficients for the respective harmonic components corresponding to the respective order of numbers stored in the order number memory device, and a tone color selector which controls the order number memory device and the amplitude coefficient memory device, when a certain tone color is selected, for causing the respective memory devices to produce the order numbers and the amplitude coefficients of a set corresponding to the selected tone color. According to the order numbers, respective harmonic component waves of a certain amplitude are produced and are multiplied with the amplitude coefficients and the multiplication products thus obtained are combined to synthesize musical tones having the selected tone color.By providing only necessary order numbers and coefficients, the memory size becomes small and the synthesizing speed becomes high.

摘要翻译： 一种电子乐器是谐波合成型的，并且具有存储形成各种音色所需的谐波分量的多个次数的订单号存储装置，存储多组振幅的振幅系数存储装置 对应于存储在订单号码存储装置中的各个数量顺序的各个谐波分量的系数，以及当选择某种音色时控制订单号存储装置和振幅系数存储装置的色调选择器， 相应的存储器件用于产生与选择的音色对应的一组的次序号和振幅系数。 根据顺序号，产生一定幅度的各个谐波分量波，并且与振幅系数相乘，并且将由此获得的乘积组合以合成具有所选音色的乐音。 通过仅提供必要的订单号和系数，存储器大小变小并且合成速度变高。

公开(公告)号：US5998724A

公开(公告)日：1999-12-07

申请号：US176513

申请日：1998-10-21

申请人： Chifumi Takeuchi ,  Toru Kitayama ,  Toshifumi Kunimoto

发明人： Chifumi Takeuchi ,  Toru Kitayama ,  Toshifumi Kunimoto

IPC分类号： G10H1/12 ,  G10H5/00 ,  G10H7/00 ,  G10H1/02

CPC分类号： G10H5/007 ,  G10H1/125 ,  G10H7/006 ,  G10H2210/235 ,  G10H2210/251 ,  G10H2240/241 ,  G10H2240/311 ,  G10H2250/211 ,  G10H2250/411 ,  G10H2250/521

摘要： Basic tone waveform corresponding to a designated tone color and pitch is generated in each of a plurality of channels. Effect is imparted to the basic tone waveform in accordance with an algorithm for providing a predetermined effect, independently for each of the channels. The effect to be imparted is controlled in accordance with the designated tone pitch, separately for each of the channels. The effect impartment may be conducted using a processor, such as a DSP, executing a predetermined program containing a predetermined effect-imparting algorithm. In one example of the effect-imparting algorithm, a delay loop is employed through which an input exciting signal is circulated while being delayed, and an effect specific to an electromagnetic pickup of an electric guitar can be approximated by controlling the delay amount in the delay loop. In another example of the effect-imparting algorithm, a ransom signal is generated to control a cutoff frequency on the basis of the random signal, the basic tone waveform is filtered in accordance with the thus-controlled cutoff frequency, and the resultant filtered tone waveform is circulated through a delay loop whose delay amount is controlled in accordance with the designated tone pitch.

摘要翻译： 在多个通道的每个通道中产生与指定的音色和音调相对应的基本音波形。 根据用于为每个通道独立地提供预定效果的算法，赋予基本乐音波形的效果。 根据指定的音调，针对每个声道单独地控制要赋予的效果。 可以使用诸如DSP的处理器执行包含预定的效果赋予算法的预定程序来进行效果隔离。 在效果赋予算法的一个示例中，采用延迟环路，通过该延迟环路，输入激励信号在被延迟的同时循环，并且可以通过控制延迟中的延迟量来近似对电吉他的电磁拾取器特有的效果 循环。 在效果赋予算法的另一示例中，产生赎金信号，以根据随机信号控制截止频率，根据这样控制的截止频率对基本乐音波形进行滤波，得到的滤波乐音波形 通过延迟量循环，其延迟量根据指定的音调进行控制。

公开(公告)号：US5969284A

公开(公告)日：1999-10-19

申请号：US5784

申请日：1998-01-12

申请人： Takao Yamamoto ,  Toshifumi Kunimoto ,  Takeshi Komano ,  Chifumi Takeuchi

发明人： Takao Yamamoto ,  Toshifumi Kunimoto ,  Takeshi Komano ,  Chifumi Takeuchi

IPC分类号： G10H1/02 ,  G10H1/18 ,  G10H1/24 ,  G10H5/00 ,  G10H7/00 ,  G10H7/08 ,  G10H7/10

CPC分类号： G10H1/24 ,  G10H5/002 ,  G10H7/002 ,  G10H2210/251 ,  G10H2240/311

摘要： A parameter setting apparatus is provided in an electronic music instrument for editing a configure of parameters in accordance with a manipulation amount to set a tone generator which creates a desired timbre of musical tones upon setting. In the apparatus, a first memory device stores a first subset of parameters containing a Boolean parameter having a first Boolean value and a numerical parameter having a first numerical value. A second memory device stores a second subset of parameters containing the Boolean parameter having a second Boolean value and the numerical parameter having a second numerical value. An operating device provides a manipulation amount for editing parameters. An interpolating device interpolates the first numerical value and the second numerical value in accordance with the manipulation amount to determine an edited numerical value of the numerical parameter. A selecting device selects one of the first Boolean value and the second Boolean value in accordance with the manipulation amount to determine an edited Boolean value of the Boolean parameter. A setting device configure the tone generator with the set of parameters containing the numerical parameter having the edited numerical value and the Boolean parameter having the edited Boolean value.

摘要翻译： 在电子乐器中设置参数设定装置，用于根据操作量编辑参数的配置，以设定在设定时产生所需音乐音色的乐音发生器。 在该装置中，第一存储装置存储包含具有第一布尔值和具有第一数值的数值参数的布尔参数的参数的第一子集。 第二存储器设备存储包含具有第二布尔值的布尔参数的参数的第二子集，并且数值参数具有第二数值。 操作装置提供用于编辑参数的操纵量。 内插装置根据操作量内插第一数值和第二数值，以确定数字参数的编辑数值。 选择装置根据操作量选择第一布尔值和第二布尔值中的一个，以确定布尔参数的编辑布尔值。 设置装置使用包含具有编辑的数值的数值参数的参数集合和具有编辑的布尔值的布尔参数来配置音调生成器。