公开(公告)号：US4416179A

公开(公告)日：1983-11-22

申请号：US370177

申请日：1982-04-21

申请人： Masatada Wachi

发明人： Masatada Wachi

IPC分类号： G10H1/053 ,  G10H1/12 ,  G10H5/00 ,  G10H7/00 ,  G10H7/02 ,  G10H7/08 ,  G10H1/02

CPC分类号： G10H7/00 ,  G10H1/125 ,  G10H5/002 ,  G10H2250/481 ,  G10H2250/505 ,  Y10S84/09

摘要： An electronic musical instrument comprising a tone generator, an accumulator and a digital filter. The tone generator generates musical tone signals each represented by sampled values, corresponding to depressed keys. The accumulator accumulates the sampled values of the musical tone signals at predetermined timings. The digital filter modifies an output of the accumulator in accordance with the amplitude-frequency characteristic of a predetermined formant characteristic. A musical tone is produced based on an output of the digital filter circuit, thereby the formant characteristic is imparted to the musical tone.This utilization of the digital filter for the musical instrument makes it possible to impart a formant characteristic to a musical tone without a complex circuit construction. Moreover the insertion of the accumulator following the tone generator makes it possible to use the digital filter of a low speed type.

摘要翻译： 一种包括乐音发生器，蓄能器和数字滤波器的电子乐器。 乐音发生器产生各自由对应于按下的键的采样值表示的乐音信号。 累加器以预定的定时累积乐音信号的采样值。 数字滤波器根据预定共振峰特性的振幅 - 频率特性来修正累加器的输出。 基于数字滤波器电路的输出产生乐音，从而将共振峰特性赋予乐音。 对乐器的数字滤波器的这种利用使得可以在没有复杂的电路结构的情况下赋予乐音的共振峰特性。 此外，在音调发生器之后插入累加器使得可以使用低速类型的数字滤波器。

公开(公告)号：US5168116A

公开(公告)日：1992-12-01

申请号：US430424

申请日：1989-11-01

申请人： Akira Iizuka

发明人： Akira Iizuka

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

CPC分类号： G10H7/02 ,  G10H1/0041 ,  G10H1/185 ,  G10H2250/505

摘要： When analog signals of two or more channels are converted to digital signals, a differential signal of at least two of these channels (A and B) is taken out. The signal of either channel A or B or the sum signal of these signals and the above-mentioned differential signal are quantized by binary-coding with n and m bits (n>m), respectively. The quantization is also performed by sampling with the sampling frequency f1 and f2 (f1>f2). As a result the memory capacity is saved and the transmission speed is improved.

摘要翻译： 当两个或更多个通道的模拟信号被转换成数字信号时，取出这些通道（A和B）中的至少两个的差分信号。 信道A或B的信号或这些信号的和信号和上述差分信号分别用n和m位（n> m）的二进制编码进行量化。 量化也通过采样频率f1和f2（f1> f2）进行采样。 结果，可以节省存储容量，提高传输速度。

公开(公告)号：US4596032A

公开(公告)日：1986-06-17

申请号：US447966

申请日：1982-12-08

申请人： Atsushi Sakurai

发明人： Atsushi Sakurai

IPC分类号： G10L11/00 ,  G10H1/00 ,  G10H1/36 ,  G10L21/04 ,  G10L1/00

CPC分类号： G10H1/366 ,  G10L21/04 ,  G10H2250/505

摘要： Speech and melody information are separately inputted and stored. The speech timing is modified (corrected) to alignment with the melody.

摘要翻译： 语音和旋律信息被分别输入和存储。 语音定时被修改（校正）以与旋律对准。

公开(公告)号：US5299282A

公开(公告)日：1994-03-29

申请号：US830226

申请日：1992-01-31

申请人： Kazuhiko Tabei

发明人： Kazuhiko Tabei

IPC分类号： G10L13/00 ,  G10H1/26 ,  G10L13/04 ,  G10L19/00 ,  G11C27/00 ,  G10L9/00

CPC分类号： G10H1/26 ,  G10L13/047 ,  G10H2250/505 ,  G10H2250/595

摘要： A message synthesizer circuit includes a compressed message data memory as a message source for storing a plurality of compressed message data of message, each corresponding to a message code specifying a message to be emitted as a synthesized message. An input message code selector converts a message code signal into the count of a ring counter by taking, as its inputs, a count output emitted from the ring counter, with the total number of these compressed message data corresponding to its maximum count number, a message code signal for specifying a message to be emitted and an input message code selector signal for setting a randomizing condition for randomly altering the message code signal. The system controller reads out the compressed message data corresponding to the random message code from the compressed message data memory, which is then converted into a specific synthesized message.

摘要翻译： 消息合成器电路包括压缩消息数据存储器作为用于存储消息的多个压缩消息数据的消息源，每个对应于指定作为合成消息发射的消息的消息代码。 输入消息代码选择器将消息代码信号转换为环形计数器的计数，通过从环形计数器发出的计数输出作为其输入，其中这些压缩消息数据的总数对应于其最大计数数，a 用于指定要发射的消息的消息代码信号和用于设置用于随机改变消息代码信号的随机条件的输入消息代码选择器信号。 系统控制器从压缩消息数据存储器读出对应于随机消息码的压缩消息数据，然后将其转换成特定的合成消息。

公开(公告)号：US4754679A

公开(公告)日：1988-07-05

申请号：US13183

申请日：1987-02-09

申请人： Hideo Suzuki

发明人： Hideo Suzuki

IPC分类号： G10H1/053 ,  G10H1/08 ,  G10H1/14 ,  G10H7/00 ,  G10H7/02 ,  G10H7/06 ,  G10H1/02

CPC分类号： G10H7/06 ,  G10H1/08 ,  G10H2250/505 ,  G10H2250/595 ,  G10H2250/625

摘要： A basic tone signal generator and a difference signal generator are provided. A desired tone signal is obtained by synthesizing a basic tone signal and a difference signal generated from these generators respectively. The basic tone signal has principal characteristics of a desired tone signal whose tone color (waveshape) changes subtly with time as in a tone of an acoustic musical instrument, but it is not the desired tone signal itself, including some errors, i.e., difference from the desired tone signal. The difference signal represents the difference between the desired tone signal and the basic tone signal. Since the basic tone signal is constituted by basic tone data whose data amount can be substantially reduced as compared to an amount of data required for reproducing the desired tone signal itself with a high resolution and the difference signal is constituted by difference data whose data amount can be very small. Therefore, a tone synthesization by combining the basic tone signal and the difference signal contributes greatly to the simplification of the circuit construction of an electronic musical instrument.

摘要翻译： 提供基本的音调信号发生器和差分信号发生器。 通过分别合成基本音调信号和从这些发生器产生的差分信号来获得期望的音调信号。 基本音调信号具有所需音调信号的主要特征，其音色（波形）随声音乐器的音调随时间而微妙地变化，但不是期望的音调信号本身，包括一些误差，即与 所需的音调信号。 差分信号表示所需音调信号和基本音调信号之间的差。 由于基本音调信号由与分辨率高的再现期望音调信号本身所需的数据量相比可以显着减少其数据量的基本音调数据构成，差分信号由数据量可以为 非常小 因此，通过组合基本音调信号和差分信号的音调合成有助于简化电子乐器的电路结构。