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1.发明授权
公开(公告)号：US4638706A
公开(公告)日：1987-01-27
申请号：US665126
申请日：1984-10-26
申请人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
发明人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
CPC分类号： G10H7/105 , G10H2250/095
摘要： In an electronic musical instrument which generates a musical waveform by calculating the waveform amplitude value at each sample point through Fourier synthesis, note-range variations of the musical waveform and its timbre variations in accordance with a touch response are controlled with respect to readout addresses for reading out a set of harmonic coefficient data for the Fourier synthesis from a memory having stored therein a plurality of sets of such harmonic coefficient data, thereby changing the component ratio of a harmonic coefficient which will ultimately be used as a Fourier coefficient.
摘要翻译： 在通过傅立叶合成计算每个采样点的波形振幅值来生成音乐波形的电子乐器中，根据触摸响应的音乐波形及其音色变化的音符范围变化被控制， 从存储有多组这样的谐波系数数据的存储器读出用于傅立叶合成的一组谐波系数数据，从而改变最终将被用作傅立叶系数的谐波系数的分量比。
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公开(公告)号：US4646611A
公开(公告)日：1987-03-03
申请号：US680944
申请日：1984-12-12
申请人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
发明人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
摘要： An electronic musical instrument is provided with a temporal variation circuit of SCF parameters for temporally varying the filter characteristic of a switched capacitor filter circuit, a control circuit for digitally controlling the temporal variation circuit and a touch response circuit for detecting, by scanning, touch response data in performance, whereby temporal variations of a musical waveform signal are digitally controlled.
摘要翻译： 电子乐器设置有用于时间上改变开关电容滤波器电路的滤波器特性的SCF参数的时间变化电路，用于数字控制时间变化电路的控制电路和用于通过扫描触摸响应来检测的触摸响应电路 性能数据，由此音乐波形信号的时间变化被数字控制。
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公开(公告)号：US4612838A
公开(公告)日：1986-09-23
申请号：US665124
申请日：1984-10-26
申请人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
发明人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
CPC分类号： G10H7/105 , G10H2250/625
摘要： In an electronic musical instrument which generates a musical waveform by calculating the waveform amplitude value at each sample point through Fourier synthesis, there is provided a musical waveform generator for caculating and synthesizing a temporally varying musical waveform at a plurality of sample points, memory circuits for storing two kinds of musical waveforms obtained by the musical waveform generator one after the other and an interpolation circuit for interpolating the two musical waveforms at time intervals shorter than the time intervals used in the musical waveform generator.
摘要翻译： 在通过傅立叶合成计算每个采样点处的波形振幅值来生成音乐波形的电子乐器中，提供了一种用于在多个采样点处计时和合成时间变化的音乐波形的音乐波形发生器，用于存储电路 一个接一个地存储由音乐波形发生器获得的两种音乐波形，以及用于在比音乐波形发生器中使用的时间间隔短的时间间隔内插两个音乐波形的内插电路。
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公开(公告)号：US4901615A
公开(公告)日：1990-02-20
申请号：US366245
申请日：1989-06-12
CPC分类号： G10H7/008
摘要： A double buffer system of a small storage capacity is employed for reducing the noise generation in musical waveforms. The operations of the buffers are utilized for performing an interpolation between waveforms and between successive sample points of each waveform, whereby the number of sample points of the waveform being read out is increased to smooth its level variation, producing a good quality musical tone as if it were obtained by quantizing the synthesized musical waveform.
摘要翻译： 采用小存储容量的双缓冲系统来减少音乐波形中的噪声产生。 缓冲器的操作用于在波形之间和每个波形的连续采样点之间进行插值，从而增加正在读出的波形的采样点的数量以平滑其电平变化，产生好的质量音调，好像 通过量化合成的音乐波形获得。
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5.发明授权
公开(公告)号：US4638709A
公开(公告)日：1987-01-27
申请号：US665125
申请日：1984-10-26
申请人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
发明人： Yoichi Nagashima , Tatsunori Kondo , Kiyomi Takauji , Mineo Kitamura , Tadashi Matsushima , Eiji Nagashima , Masafumi Mizoguchi
CPC分类号： G10H7/105 , G10H2250/095
摘要： In an electronic musical instrument which generates a musical waveform by calculating the waveform amplitude value at each sample point through Fourier synthesis, temporal variations of the musical waveform and its timbre variations in accordance with a touch response are controlled with respect to readout addresses for reading out a set of harmonic coefficient data for the Fourier synthesis from a memory having stored therein a plurality of sets of such harmonic coefficient data, thereby changing the component ratio of a harmonic coefficient which will ultimately be used as a Fourier coefficient.
摘要翻译： 在通过傅里叶合成计算每个采样点处的波形振幅值来生成音乐波形的电子乐器中，根据读出地址控制音乐波形及其音色变化的时间变化， 一组用于从其中存储有多组这样的谐波系数数据的存储器进行傅立叶合成的谐波系数数据，从而改变最终将被用作傅立叶系数的谐波系数的分量比。
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6.发明授权
公开(公告)号：US3982460A
公开(公告)日：1976-09-28
申请号：US613931
申请日：1975-09-16
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
CPC分类号： G10H1/057 , G10H7/12 , G10H2250/591
摘要： An apparatus for forming a musical-tone waveform for an electronic musical instrument characterized in that at least one cycle of a musical-tone waveform, which it is desired be produced, is divided in amplitude by dividing lines at equal intervals and sampling points on a time axis are determined from respective crossing points between the waveform and the dividing lines and the distance between the initial and the final sampling points is represented by an appropriate number of pulses so that each sampling point may be represented by a pulse number. There is further provided a memory circuit wherein each sampling point, that is, the pulse number thereof is set up in the form of a digital signal. Additionally, there is a set up in the form of a digital signal a tendency such as increase, decrease or equal at each sampling point with reference to the preceding sampling point. An envelope setting device is used wherein the envelope of a muscial-tone waveform, which it is desired be produced, is subjected to sampling and the analog amount of each sampling point is set up in the form of digital signal. An accumulatively adding device is employed whereby the output digital signal of the envelope setting device is accumulatively added to or subtracted from the output digital signal of the memory circuit. The accumulatively adding device is connected at its output terminal to a D-A converter for converting its output signal into an analog signal.
摘要翻译： 一种用于形成用于电子乐器的乐音波形的装置，其特征在于，要产生希望产生的乐音波形的至少一个周期通过以等间隔的分割线和 时间轴由波形和分割线之间的各个交叉点确定，并且初始和最终采样点之间的距离由适当数量的脉冲表示，使得每个采样点可以由脉冲数表示。 还提供了一种存储电路，其中每个采样点，即其脉冲数量以数字信号的形式被设置。 此外，以数字信号的形式设置参考前述采样点的每个采样点的增加，减小或相等的趋势。 使用信封设定装置，其中要产生希望产生的乐音波形的包络进行采样，并且以数字信号的形式设置每个采样点的模拟量。 使用累加装置，由此将包络线设定装置的输出数字信号累积地加到或从存储电路的输出数字信号中减去。 累加装置在其输出端连接到D-A转换器，用于将其输出信号转换为模拟信号。
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公开(公告)号：US4059040A
公开(公告)日：1977-11-22
申请号：US612174
申请日：1975-09-10
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
CPC分类号： G10H7/00
摘要： A tone source apparatus for an electronic musical instrument is characterized in that at least one cycle of a musical-tone waveform, which it is desired be produced, is depicted as a sequence of section lines and a series of pulses having regular intervals is varied, by a pulse-density varying circuit, in pulse density in accordance with the degrees of inclination of the respective section lines. The resultant series of pulses having varied pulse density is formed, by a waveform forming circuit, into the desired musical tone waveform. The pulse-density varying circuit comprises a first counter to which is applied as an input, the aforementioned series of pulses having regular intervals. A second counter is connected, in series or in parallel, to the first counter and a decoder is connected to an output terminal of the second counter. A memory circuit is connected to the output terminals of the decoder. The memory circuit comprises a plurality of pulse-density setting portions which set frequency-dividing ratios for the first counter for selecting output pulse-densities. The memory circuit also comprises a plurality of section range setting portions which set frequency-dividing ratios for the second counter for selecting output time intervals of signals obtained at respective output terminals of the decoder.
摘要翻译： 一种用于电子乐器的音源设备的特征在于，将要产生乐曲的波形的至少一个周期描绘为一段切片线，并且改变具有规则间隔的一系列脉冲， 通过脉冲密度变化电路，根据相应截面线的倾斜度的脉冲密度。 通过波形形成电路形成具有变化的脉冲密度的所得一系列脉冲到所需的乐音波形中。 脉冲密度变化电路包括作为输入施加的第一计数器，上述一系列脉冲具有规则的间隔。 第二计数器串联或并联连接到第一计数器，解码器连接到第二计数器的输出端。 存储电路连接到解码器的输出端。 存储电路包括多个脉冲浓度设置部分，其设置用于选择输出脉冲密度的第一计数器的分频比。 存储电路还包括多个区间设置部分，其设置第二计数器的分频比，用于选择在解码器的各个输出端获得的信号的输出时间间隔。
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公开(公告)号：US4635517A
公开(公告)日：1987-01-13
申请号：US679758
申请日：1984-12-10
CPC分类号： G10H1/20 , G10H2210/471 , G10H2210/481 , G10H2210/486 , G10H2210/491
摘要： In an electronic musical instrument, note frequency data corresponding to a plurality of temperaments are prestored and are selectively read out in accordance with a selected one of the temperaments, generating a note frequency corresponding thereto. Further, a plurality of note frequency data corresponding to each transposition operation for each temperament and selectively read out in accordance with a selected temperament and the transposition operation, thereby generating a note frequency corresponding thereto. Thus the temperament selection and the transposition operation can be performed with satisfactory stability and high frequency accuracy.
摘要翻译： 在电子乐器中，预先存储对应于多种气质的音符频率数据，并根据所选择的一种气质选择性地读出，产生与其对应的音符频率。 此外，对应于每个气质的每个转置操作对应的多个音符频率数据，并且根据所选择的气质和转置操作选择性地读出，从而产生与其对应的音符频率。 因此，可以以令人满意的稳定性和高频精度进行气质选择和转置操作。
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公开(公告)号：US4421003A
公开(公告)日：1983-12-20
申请号：US324848
申请日：1981-11-25
申请人： Tatsunori Kondo
发明人： Tatsunori Kondo
CPC分类号： G10H1/0575
摘要： In the generation of an envelope waveshape of a musical note to be produced in response to a key depression, speed parameters of the envelope which are determined corresponding to the speed of its attack, decay and release are produced digitally. The envelope waveshape is obtained by calculations based on the speed parameters. The formation of the envelope waveshape of the musical note, its volume level control and its tone control can be achieved with simple arrangements.
摘要翻译： 在产生响应于键按压而产生的音符的包络波形的产生中，根据其攻击，衰减和释放的速度确定的包络的速度参数以数字方式产生。 通过基于速度参数的计算获得包络波形。 可以通过简单的布置来实现音符的包络波形的形成，其音量水平控制和其音调控制。
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公开(公告)号：US4282785A
公开(公告)日：1981-08-11
申请号：US842525
申请日：1977-10-17
申请人： Nobuharu Obayashi , Hikaru Hashizume , Seiji Kameyama , Sadaaki Ezawa , Tatsunori Kondo , Kiyomi Takauji , Tohru Aoyama
发明人： Nobuharu Obayashi , Hikaru Hashizume , Seiji Kameyama , Sadaaki Ezawa , Tatsunori Kondo , Kiyomi Takauji , Tohru Aoyama
摘要： An electronic musical instrument which is provided with a note frequency data memory for storing note frequency data corresponding to data of key switch depression through a key code register, a note frequency data register for latching and storing the data from the note frequency data memory by a time division pulse from a time division control signal generator, an octave data register for latching and storing octave data from the key code register by the time division pulse from the time division control signal generator, a frequency generator composed of a programmable counter supplied with the output from the note frequency data register to provide a frequency corresponding thereto, a frequency divider array supplied with the frequency and a decoder supplied with the output from the octave data register, the outputs from the respective output ends of the frequency divider array being selected by the output from the decoder in accordance with the octave data, and a musical waveform generator composed of filter circuits corresponding to respective musical instrument sounds and supplied with the output from the frequency generator to provide a musical signal.
摘要翻译： 一种电子乐器，其具有音符频率数据存储器，用于存储对应于通过键码寄存器的按键开关按压数据的音符频率数据，音符频率数据寄存器，用于锁存和存储来自音符频率数据存储器的数据 来自时分控制信号发生器的时分脉冲，用于通过来自时分控制信号发生器的时分脉冲来存储和存储来自键码寄存器的八度数据的八度数据寄存器，由可编程计数器构成的频率发生器， 从音符频率数据寄存器输出以提供与其对应的频率，提供有频率的分频器阵列和提供有来自倍频程数据寄存器的输出的解码器，分频器阵列的相应输出端的输出由 来自解码器的根据八度数据的输出和音乐波形 发生器由对应于各乐器声音的滤波器电路组成，并且提供有来自频率发生器的输出以提供音乐信号。
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