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1.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：US4174649A
公开(公告)日：1979-11-20
申请号：US842523
申请日：1977-10-17
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Hironori Watanabe , Tatsunori Kondo , Toshio Kugisawa , Yutaka Washiyama
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Hironori Watanabe , Tatsunori Kondo , Toshio Kugisawa , Yutaka Washiyama
CPC分类号： G10H7/00
摘要： An electronic musical instrument which has a key assignor or assignors of one or more channels for generating and temporarily storing key code corresponding to key depression and release, respectively, a memory for storing waveshape information such as inclination and amplitude variations of a required musical waveshape divided into a plurality of periods so as to read out the waveshape information corresponding to the key code, a plurality of tone source devices, each including waveshape generators of different sound ranges respectively corresponding to keyboard switches in the same channel of each key assignor, the tone source device reading out the waveshape information from the memory on a time divided basis to generate from the waveshape generators waveshapes of different frequencies based on the read out waveshape information, and means for simultaneously actuating the corresponding waveshape generators by the key code from the key assignor and coupler information.
摘要翻译： 一种电子乐器，其具有键分配器或一个或多个声道的转换器，用于分别产生和临时存储与键按下和释放相对应的键码，存储器用于存储所需音乐波形的波形信息，例如倾斜和幅度变化 分别对应于每个键分配器的同一通道中的键盘开关，读出与键码相对应的波形信息的多个音源装置，每个音源装置包括不同声音范围的波形发生器， 源装置基于读出的波形信息从时间划分的基础上从存储器读出波形信息，以从波形发生器波形生成不同频率的波形，以及用于通过密钥转发器的密钥代码同时致动相应波形生成器的装置 和耦合器信息。
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公开(公告)号：US4023454A
公开(公告)日：1977-05-17
申请号：US608535
申请日：1975-08-28
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： G10H7/10 , G10H7/08 , G10H2250/565
摘要： A tone source apparatus is provided for an electronic musical instrument. It comprises a memory circuit which has a plurality of addresses and is so arranged that where at least one cycle of a musical tone waveform is divided into p units and a waveform in each section range is represented by a formula containing the abscissa as its variable, a coefficient and a section range quantum number of each formula is memorized in the form of digital signals in the corresponding address. Also included are a clock pulse oscillator, a counter means for counting output clock pulses of the clock pulse oscillator, and a coincidence circuit serving to generate the coincidence signal when the output digital signal of the counter means and a digital signal of the section range quantum number memorized in the memory circuit coincide with one another. A decoder designates the next stage address in order by output signals of the coincidence circuit. A calculation circuit is used for calculating a digital signal from the counter means and a coefficient digital signal from the designated address. A D-A convertor converts the output digital signal of the calculation circuit into a corresponding analog signal. The addresses in the memory circuit have memory portions which memorize as digital signals respective coefficients of n degree multiple term formulae for respective section ranges, and respective section range quantum numbers.
摘要翻译： 提供一种用于电子乐器的音源设备。 它包括具有多个地址的存储器电路，并且被布置成使得在将音乐波形的至少一个周期划分成p个单位并且每个区间范围中的波形由包含横坐标作为其变量的公式表示的情况下， 每个公式的系数和截面范围量子数字以相应地址中的数字信号的形式存储。 还包括时钟脉冲振荡器，用于计数时钟脉冲振荡器的输出时钟脉冲的计数器装置，以及用于当计数器装置的输出数字信号和截面范围量子的数字信号时产生一致信号的符合电路 在存储器电路中存储的数字彼此一致。 解码器通过符合电路的输出信号按顺序指定下一级地址。 计算电路用于计算来自计数器装置的数字信号和来自指定地址的系数数字信号。 D-A转换器将计算电路的输出数字信号转换成相应的模拟信号。 存储器电路中的地址具有存储部分，其存储作为数字信号的各个区间范围的n度多项式公式的相应系数以及相应的区间范围量子数。
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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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6.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：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：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：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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