公开(公告)号：US4478124A

公开(公告)日：1984-10-23

申请号：US478735

申请日：1983-03-25

申请人： Tadao Kikumoto

发明人： Tadao Kikumoto

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

CPC分类号： G10H7/10 ,  G10H7/08 ,  G10H2250/625

摘要： A sound aspect generating apparatus for an electronic musical instrument is adapted to interpolate between respective parameters constituting two kinds of designated sound aspects to generate sound aspects based on the interpolated parameters. More specifically, preset switches (71 to 7n) are operated to read out the parameters of the two kinds of sound aspects stored in advance in a memory (50). By designating an arbitrary point between two kinds of sound aspects with the aid of a controller (10), the rate of change of the respective parameters between the designated sound aspects is evaluated by means of a central processing unit (40) and the parameters interpolating the portion between the designated two points are evaluated by the central processing unit based on the above mentioned rate of change. The evaluated parameters are converted into an analog signal which is applied to a music synthesizer as sound aspects, whereby a musical tone signal is produced.

摘要翻译： 一种用于电子乐器的声音方面产生装置适于在构成两种指定声音方面的各个参数之间插值，以便根据内插参数产生声音方面。 更具体地，操作预设开关（71至7n）以读出预先存储在存储器（50）中的两种声音方面的参数。 通过借助于控制器（10）指定两种声音方面之间的任意点，通过中央处理单元（40）评估指定声音方面之间各个参数的变化率，并且内插参数 基于上述变化率，中央处理单元对指定的两点之间的部分进行评价。 将评估参数转换为作为声音方面应用于音乐合成器的模拟信号，由此产生乐音信号。

公开(公告)号：US4429605A

公开(公告)日：1984-02-07

申请号：US315982

申请日：1981-10-28

申请人： Kiyomi Takauji

发明人： Kiyomi Takauji

IPC分类号： G10H7/00 ,  G10H7/10 ,  G10H1/08 ,  G10H1/36

CPC分类号： G10H7/008 ,  G10H7/105

摘要： In an electronic musical instrument which obtains waveshape amplitude values at sampling points by calculation for producing a desired waveshape, there are provided first means for calculating a waveshape varying with time and second means for calculating a waveshape undergoing no variations with time. Normally the waveshape calculation by the first means is repeated but, in the case of a new key depression or a change in the state of a tone select switch, the waveshape calculation by the second means is performed.

摘要翻译： 在通过用于产生期望波形的计算获得采样点的波形幅度值的电子乐器中，提供了用于计算随时间变化的波形的第一装置和用于计算不随时间变化的波形的第二装置。 通常，第一装置的波形计算被重复，但是在新的按键或音调选择开关的状态的改变的情况下，执行第二装置的波形计算。

公开(公告)号：US4279186A

公开(公告)日：1981-07-21

申请号：US92468

申请日：1979-11-08

申请人： Christian J. Deforeit

发明人： Christian J. Deforeit

IPC分类号： G10H7/10 ,  G10H1/00 ,  G10H3/03

CPC分类号： G10H7/105

摘要： The invention concerns a polyphonic musical synthesizer using digital techniques. The generation of successive wave form patterns makes use of phase data for addressing a wave form memory, and of amplitude and harmonic or octave row data contained in a set of memory blocks. Control of the synthesizer is effected by externally addressing the memory set in order to write the aforementioned data in it.The development of synthesis operations within the synthesizer is conditioned by a sequential chain of reading of the different memory blocks in terms of signals from a plurality of generators.

摘要翻译： 本发明涉及使用数字技术的复音音乐合成器。 连续波形图案的产生利用了用于寻址波形存储器的相位数据以及包含在一组存储器块中的幅度和谐波或倍频程行数据。 合成器的控制通过外部寻址存储器组来实现，以便将上述数据写入其中。 在合成器内的合成操作的发展由来自多个发生器的信号的不同存储块的读取的顺序链来调节。

公开(公告)号：US4254681A

公开(公告)日：1981-03-10

申请号：US892328

申请日：1978-03-31

申请人： Toshio Kugisawa ,  Noriji Sakashita

发明人： Toshio Kugisawa ,  Noriji Sakashita

IPC分类号： G10H1/057 ,  G10H1/18 ,  G10H7/08 ,  G10H7/10 ,  G10F1/00 ,  G06F1/02

CPC分类号： G10H7/08 ,  G10H1/0575 ,  G10H1/187 ,  G10H7/10 ,  G10H2250/201

摘要： A musical waveshape processing system for an electronic musical instrument in which time-division time slots are set corresponding to a plurality of channels for producing notes selected on keyboards of the electronic musical instrument and the notes are each produced by repeatedly calculating the musical waveshape amplitude value of each channel in each time-division time slot. A musical waveshape calculator is provided which calculates the musical waveshape amplitude value as f(t)=at.sup.2 +bt+c based on waveshape data a, b and c and address information t. A multiplier is provided by which the value of an envelope synchronized with the time-division time slot is multiplied by the waveshape data a, b and c. A tone control circuit is provided which counts time-division multiplex signals of the ON-OFF state of a tone selection switch with a counter every frame of the time-division multiplexing and compares the count values of two successive frames to detect a change in the state of the tone selection switch from non-coincidence between the both count value, thereby controlling the musical waveshape.

摘要翻译： 一种用于电子乐器的音乐波形处理系统，其中通过重复地计算音乐波形幅度值来产生其中设置对应于用于产生在电子乐器的键盘上选择的音符的多个声道的时分时隙 在每个时分时隙中的每个信道。 提供了一种音乐波形计算器，其基于波形数据a，b和c以及地址信息t，将音乐波形幅值计算为f（t）= at2 + bt + c。 提供乘法器，通过该乘法器将与时分时隙同步的包络的值乘以波形数据a，b和c。 提供了一种音调控制电路，其对每个时分多路复用的每一帧计数一个音调选择开关的ON-OFF状态的时分复用信号，并比较两个连续帧的计数值，以检测 音调选择开关的状态从两个计数值之间的非重合，从而控制音乐波形。

公开(公告)号：US4249448A

公开(公告)日：1981-02-10

申请号：US28038

申请日：1979-04-09

申请人： Ralph Deutsch ,  Leslie J. Deutsch

发明人： Ralph Deutsch ,  Leslie J. Deutsch

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

CPC分类号： G10H7/105

摘要： In a musical instrument having one or more tone generators in which a plurality of data words corresponding to the amplitudes of a corresponding number of evenly spaced reference points defining the waveform of one cycle of an audio signal are transferred sequentially from a note register to a digital-to-analog converter in repetitive cycles at a rate proportional to the pitch of the tone being generated, apparatus is provided for computing the set of data points in the note register from a set of points defining a quarter cycle of the waveform. The calculation of the quarter cycle of data points is divided into two sets. One set is calculated using the odd-numbered harmonics and the other set is caculated using the even-numbered harmonics. The complete waveform is reconstructed from the two sets during the transfer of data to the note registers. By reducing the number of calculated points to one-quarter of a waveform the calculation time is reduced thereby making the instrument capable of faster response to time varying tonal changes.

摘要翻译： 在具有一个或多个音调发生器的乐器中，其中对应于定义音频信号的一个周期的波形的相应数量的均匀间隔的参考点的幅度的多个数据字从音符寄存器顺序传送到数字 模拟转换器以与生成的音调的音调成比例的速率在重复周期中提供装置，用于从限定波形的四分之一周期的一组点计算音符寄存器中的数据点集合。 数据点的四分之一周期的计算分为两组。 使用奇数次谐波计算一组，另一组使用偶数谐波计算。 在将数据传输到音符寄存器期间，从两组中重构完整的波形。 通过将计算出的点数减少到波形的四分之一，计算时间减少，从而使仪器能够更快地响应时变音调变化。

公开(公告)号：US4238984A

公开(公告)日：1980-12-16

申请号：US862430

申请日：1977-12-20

申请人： Hironori Watanabe

发明人： Hironori Watanabe

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

CPC分类号： G10H7/10 ,  G10H1/18

摘要： An electronic musical instrument which produces musical notes synthesized based on logic orthogonal functions stored in digital form. A coefficient corresponding to a tone selected by a tone selector is read out of a memory to calculate a logic orthogonal function, for example, a composite coefficient of a Walsh Hadamard matrix. The composite coefficient is applied to a plurality of waveshape calculators to calculate the amplitude value of a waveshape of the required tone and the waveshape calculators are actuated at the timing predetermined times the period of the musical note selected by the depressed key. Any desired musical waveshape can be produced by setting the coefficient corresponding thereto and the spectral structure of the waveshape can be changed with the lapse of time. Polyphonic tone synthesis is achieved by intermittent operation of the waveshape calculators to produce a wide variety of musical sounds. Further, a depressed key data detector is provided for detecting non-encoded key data. Columns of a key switch matrix are selected by a ring counter and a predetermined time slot is provided by a priority selector in accordance with priority of rows having key switch closure signals and a pulse having the phase angle of the row is produced in the time slot. This pulse is extracted together with a frame pulse and a clock to detect key data. The key data are assigned to a plurality of assignment units one after another and, thereafter, waveshape calculation is carried out in each of a plurality of systems.

摘要翻译： 一种产生基于以数字形式存储的逻辑正交函数合成的音符的电子乐器。 从存储器中读出与音调选择器选择的音调对应的系数，以计算逻辑正交函数，例如沃尔什哈达玛矩阵的复合系数。 将复合系数应用于多个波形计算器以计算所需音调的波形的幅度值，并且在由按下的键选择的音符的周期的预定时间的定时致动波形计算器。 可以通过设定与其对应的系数来产生任何期望的音乐波形，并且可以随着时间的流逝改变波形的频谱结构。 通过间歇地操作波形计算器以产生各种各样的音乐声音来实现多音色调合成。 此外，提供了用于检测未编码的密钥数据的按下的密钥数据检测器。 钥匙开关矩阵的列由环形计数器选择，并且由优先权选择器根据具有钥匙开关闭合信号的行的优先级提供预定的时隙，并且在时隙中产生具有行的相位角的脉冲 。 该脉冲与帧脉冲和时钟一起提取以检测关键数据。 密钥数据一个接一个地分配给多个分配单元，此后，在多个系统中的每个系统中执行波形计算。

公开(公告)号：US4200021A

公开(公告)日：1980-04-29

申请号：US967398

申请日：1978-12-07

申请人： Masanobu Chibana

发明人： Masanobu Chibana

IPC分类号： G10H1/06 ,  G10H1/14 ,  G10H5/00 ,  G10H7/08 ,  G10H7/10 ,  G10H1/02 ,  G10H5/02

CPC分类号： G10H7/10

摘要： There is provided a first waveform generator which repeatedly generates a first waveform having a relatively short period in response to a first constant parameter, a second waveform generator responsive to a second constant parameter for generating a second waveform having a longer period than the repeatedly generated waveform and gradually approaches to zero in the later half of its period, a multiplier for multiplying the first waveform and the second waveform to form a musical tone waveform element, and means for resetting the waveform generating operations of the first and second waveform generator at a period corresponding to the tone pitch of a depressed key. Sequential alignment of the musical tone waveform elements constitutes a musical tone waveform having a tone frequency determined by the resetting period. The changes in the parameters cause changes in the tone color.

摘要翻译： 提供了一种第一波形发生器，其响应于第一恒定参数重复地产生具有相对短的周期的第一波形;响应于第二常数参数的第二波形发生器，用于产生具有比重复产生的波形更长的周期的第二波形 并且在其后半部分中逐渐接近零，乘法器，用于将第一波形和第二波形相乘以形成乐音波形单元;以及装置，用于以周期复位第一和第二波形发生器的波形产生操作 对应于按下的键的音调。 乐音波形元件的顺序对准构成具有由复位周期确定的音调频率的乐音波形。 参数的更改会导致色调变化。

公开(公告)号：US4150600A

公开(公告)日：1979-04-24

申请号：US751391

申请日：1977-05-10

申请人： Ralph Deutsch

发明人： Ralph Deutsch

IPC分类号： G10H1/08 ,  G10H7/08 ,  G10H7/10 ,  G10H3/00

CPC分类号： G10H7/105

摘要： The inventive circuitry extends the harmonic content of musical tones produced by a computor organ of the type disclosed in U.S. Pat. No. 3,809,786. A memory stores values of an algebraic approximation of the summation of the amplitudes of a set of Fourier components of order higher than those separately evaluated by the computor organ itself. As each musical waveshape sample point amplitude is computed by the computor organ, the stored summation approximation value for the corresponding sample point is accessed from the memory. This accessed value is appropriately scaled, and is added to the sum of the lower order Fourier component contributions that are calculated by the computor organ. The resultant sample point amplitudes are converted to musical tones in real time. In an illustrative embodiment, musical tones having the spectral content of a sawtooth wave are produced.

摘要翻译： 本发明的电路扩展了美国专利中公开的类型的计算机器件产生的乐音的谐波含量。 第3,809,786号。 存储器存储一组傅立叶分量的振幅的总和的值的代数近似值，其值高于由计算机器官本身分别估计的那些。 由于每个音乐波形采样点振幅由计算器机构计算，所以从存储器访问相应采样点的存储求和近似值。 该访问值被适当地缩放，并且被加到由计算机器官计算的低阶傅立叶分量贡献的总和中。 所得到的采样点幅度被实时地转换成乐音。 在说明性实施例中，产生具有锯齿波的频谱含量的乐音。

公开(公告)号：US4103582A

公开(公告)日：1978-08-01

申请号：US780752

申请日：1977-03-24

申请人： Masanobu Chibana

发明人： Masanobu Chibana

IPC分类号： G10H1/053 ,  G10H1/14 ,  G10H7/08 ,  G10H7/10 ,  G10H1/02

CPC分类号： G10H7/105

摘要： In an electronic musical instrument of the class wherein the amplitude samples of a tone at successive sampling points of musical tone waveform are calculated by independently calculating respective partials that constitute the musical tone waveform and then adding the calculated partial samples, there are provided a "variable" generating circuit which generates a variable which varies with time, and a "variable" modifying circuit which modifies the variable with a coefficient corresponding to each partial thereby independently modifying the normal frequency of each one of the correponding partials in accordance with the output from the variable modulating circuit.

摘要翻译： 在一种电子乐器中，其中通过独立地计算构成乐音波形的各个部分，然后将所计算的部分样本相加，来计算乐音波形的连续采样点处的音调的振幅采样， “生成电路，其生成随时间变化的变量，以及”变量“修改电路，其以与每个部分对应的系数修改变量，从而根据来自所述变量的输出独立地修改每个相应部分的正常频率 可变调制电路。

公开(公告)号：US4085644A

公开(公告)日：1978-04-25

申请号：US603776

申请日：1975-08-11

申请人： Ralph Deutsch ,  Leslie J. Deutsch

发明人： Ralph Deutsch ,  Leslie J. Deutsch

IPC分类号： G10H7/08 ,  G10H7/10 ,  G10H1/00 ,  G10F1/00

CPC分类号： G10H7/105

摘要： Musical notes are produced polyphonically in a tone synthesizer or like musical instrument by computing a master data set, transferring data set to buffer memories, and repetitively converting in real time contents of memories to notes. The master data set is created repetitively and independently of tone generation by computing a generalized Fourier algorithm using stored sets of generalized Fourier coefficients. Computations limit tones to audible frequencies, occur at intervals short compared to musical tone periods, and circuitry is included to provide time-varying modulations of the synthesized tonal structure. Synchronizing signals included in the buffer memories provide smooth transition between the master system logic clock and asynchronous tone conversion clocks. A time shared digital-to-analog converter transforms the buffer memory outputs to individual tone channels and provides attack, decay, sustain, release and other amplitude modulation effects.

摘要翻译： 通过计算主数据集，将数据集传送到缓冲存储器，并将存储器的实时内容重复地转换为音符，在音调合成器或类似乐器中多音制作音符。 通过使用存储的广义傅立叶系数集计算广义傅里叶算法，重复地和独立于乐音产生来创建主数据集。 计算将音调限制到可听频率，与音乐时段相比间隔短，并且包括电路以提供合成音调结构的时变调制。 包括在缓冲存储器中的同步信号提供主系统逻辑时钟和异步音调转换时钟之间的平滑过渡。 时间共享的数模转换器将缓冲存储器输出转换为各个音频通道，并提供攻击，衰减，维持，释放和其他幅度调制效果。