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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：US3971282A
公开(公告)日：1976-07-27
申请号：US544664
申请日：1975-01-27
摘要： An electronic musical instrument capable of transposition has a high frequency oscillator provided on its output side with an octave frequency divider comprising twelve counter circuits to generate twelve tone signals based on a twelve tone tempered scale. These tone signals are respectively frequency-divided by respective pluralities of counter circuits to obtain a plurality of octave tone signals. An oscillator for transposition comprising a plurality of counter circuits is provided and the output terminals of these counter circuits are selectively connected to an input terminal of the octave frequency divider such that the oscillation frequency generated from the high frequency oscillator is added to the oscillation frequency generated from the transposition oscillation to produce an input frequency for the octave frequency divider. A frequency divider is provided at the output of the oscillator.
摘要翻译： 能够转置的电子乐器具有在其输出侧提供的高频振荡器，其具有包括十二个计数器电路的八度分频器，以基于十二音调调整音阶产生十二音调信号。 这些音调信号分别由相应的多个计数器电路分频，以获得多个八度音调信号。 提供了包括多个计数器电路的用于转置的振荡器，并且这些计数器电路的输出端选择性地连接到八度分频器的输入端，使得从高频振荡器产生的振荡频率被加到产生的振荡频率 从转置振荡产生八度分频器的输入频率。 在振荡器的输出端提供一个分频器。
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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：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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