公开(公告)号：US4307644A

公开(公告)日：1981-12-29

申请号：US161591

申请日：1980-06-20

Applicant: Eiichiro Aoki

Inventor： Eiichiro Aoki

IPC: G10H1/00 ,  G10H1/28 ,  G10H1/38 ,  G10H7/00 ,  G10H1/26 ,  G10H1/42

CPC classification number: G10H1/38 ,  G10H7/00 ,  G10H2210/616 ,  Y10S84/12 ,  Y10S84/22

Abstract: An electronic musical instrument is of a type in which chord constituent tones are automatically produced at timings determined by the rhythm to be played and according to random selection of notes. A rhythm pattern pulse generator generates a rhythm pattern pulse representing the timings of tones to be sounded according to the selection of the rhythm. A constituent degree data generator generates, at the timings of the rhythm pattern pulse, degree data signals representing degrees of chord constituent notes, wherein the degrees are aligned in a random order. Tones are produced of the notes designated by the degrees and the root note of the chord. Thus an automatic performance is realized with the notes constituting a chord but appearing in a random order.

Abstract translation: 一种电子乐器是一种类型，其中弦组成音由根据要播放的节奏确定的定时和根据笔记的随机选择自动产生。 节奏图形脉冲发生器根据节奏的选择产生表示要发声的音调的定时的节奏图案脉冲。 构成度数据发生器在节奏图形脉冲的定时产生表示弦构成音符的度数的度数据信号，其中度数以随机顺序对准。 音调是由和弦的音符和音符指定的音符产生的。 因此，使用音符构成和弦而以随机顺序出现来实现自动演奏。

公开(公告)号：USRE30736E

公开(公告)日：1981-09-08

申请号：US154994

申请日：1980-05-30

Applicant: Teruo Hiyoshi ,  Akira Nakada ,  Tsutomu Suzuki ,  Eiichiro Aoki ,  Takatoshi Okumura

Inventor： Teruo Hiyoshi ,  Akira Nakada ,  Tsutomu Suzuki ,  Eiichiro Aoki ,  Takatoshi Okumura

IPC: G10H7/00 ,  G10H1/057 ,  G10H7/06

CPC classification number: G10H1/057 ,  G10H7/06

Abstract: In an electronic musical instrument, the keys of a keyboard are divided into a plurality of groups by octaves, and a wave generator is provided with a memory for storing constants corresponding to musical tone frequencies to be generated according to the notes includes in a desired group out of the plurality of group, an accumulator for repeatedly adding the constants read out of the memory, and a bit position shifting circuit for shifting the bit position of the data produced by the accumulator according to the octave range of a note to be produced, thereby to obtain the data varying repeatedly according to the frequency of a note to be produced, and to reduce the storing capacity of the memory when compared to the number of keys.

公开(公告)号：US4228712A

公开(公告)日：1980-10-21

申请号：US940381

申请日：1978-09-07

Applicant: Yasuji Uchiyama ,  Akira Nakada ,  Takatoshi Okumura ,  Eiichiro Aoki ,  Eiichi Yamaga ,  Akiyoshi Oya

Inventor： Yasuji Uchiyama ,  Akira Nakada ,  Takatoshi Okumura ,  Eiichiro Aoki ,  Eiichi Yamaga ,  Akiyoshi Oya

IPC: G10H1/18 ,  G10H1/36 ,  G10H1/38 ,  G10H1/00

CPC classification number: G10H1/383

Abstract: Key switches are connected in a matrix fashion between row lines making block lines for octaves and column lines making note lines for notes. The note lines are connected to a note detection circuit which converts the note line outputs of the actuated switches into key codes in a time shared fashion and to a chord detection circuit which includes a chord type detecting logic and a shift register connected thereto and storing the note line outputs in its respective stages. During a chord detecting period, the note detection circuit is loaded with signals "1" as if all the key switches were actuated and delivers key codes of all notes one after another, whereas the shift register is circulatingly shifted synchronously with the note code change. When the logic detects an establishment of a chord, the note code of that moment is extracted to be a code identifying the root note of the chord. The root note code is then processed for automatic bass and chord performance.

Abstract translation: 键开关以矩阵方式连接在行线之间，为八度音阶和列线制作块线，为笔记制作笔记线。 音符线连接到音符检测电路，该音符检测电路以时分方式将致动开关的音符线输出转换成键码，并将其连接到和弦检测电路，该弦检测电路包括和弦型检测逻辑和与之连接的移位寄存器， 笔记线输出在各自的阶段。 在和弦检测期间，音符检测电路装载有信号“1”，好像所有键开关都被致动，并且一个接一个地传送所有音符的键码，而移位寄存器与音符码变化同步地循环移位。 当逻辑检测到和弦的建立时，该时刻的音符代码被提取为标识和弦的根音的代码。 然后处理根音符代码以进行自动低音和和弦演奏。

公开(公告)号：US4228403A

公开(公告)日：1980-10-14

申请号：US915239

申请日：1978-06-13

Applicant: Takatoshi Okumura ,  Akira Nakada ,  Yasuji Uchiyama ,  Eiichiro Aoki ,  Eiichi Yamaga ,  Akiyoshi Oya

Inventor： Takatoshi Okumura ,  Akira Nakada ,  Yasuji Uchiyama ,  Eiichiro Aoki ,  Eiichi Yamaga ,  Akiyoshi Oya

IPC: G10H1/18 ,  H03K3/84 ,  H03B19/00 ,  H03K5/156

CPC classification number: G10H1/187 ,  Y10S84/11

Abstract: A digital oscillator generates a basic pulse having a period which is a predetermined large number of times of a clock pulse period. During the basic pulse period are allotted a predetermined small number of time slots defining submultiple frequency channels. There is provided a shift register having the channel number of stages, each stage being assigned to each channel. The contents of the respective stages are changed at respectively different periods which are multiples of the basic pulse period. The contents are taken out timewise-serially, one at a time, stage by stage, and superimposed on the basic pulse to constitute a time-division-multiplexed wave data signal. The delivered signal is demultiplexed to form individual waves having respectively different frequencies which are submultiple-related to the frequency of the basic pulse. This generator is very suitable for electronic musical instruments, as a single line transmits plural wave data.

Abstract translation: 数字振荡器产生具有时钟脉冲周期的预定次数的周期的基本脉冲。 在基本脉冲周期期间，分配有预定的少量定义多个频率信道的时隙。 提供了具有通道级数的移位寄存器，每个级被分配给每个通道。 分别在基本脉冲周期的倍数的不同时段改变各个级的内容。 按时间顺序串行地取出内容，逐个逐个取出，叠加在基本脉冲上，构成时分复用波数据信号。 所递送的信号被解复用以形成具有与基本脉冲的频率相关的分别不同频率的各个波。 该发电机非常适合电子乐器，单线传输多波数据。

公开(公告)号：US4223584A

公开(公告)日：1980-09-23

申请号：US81

申请日：1979-01-02

Applicant: Akira Nakada ,  Eiichiro Aoki ,  Akiyoshi Oya ,  Takatoshi Okumura ,  Yasuji Uchiyama ,  Eiichi Yamaga

Inventor： Akira Nakada ,  Eiichiro Aoki ,  Akiyoshi Oya ,  Takatoshi Okumura ,  Yasuji Uchiyama ,  Eiichi Yamaga

IPC: G10H1/057 ,  G10H1/18 ,  G10H3/06

CPC classification number: G10H1/188

Abstract: An electronic musical instrument is provided with an upper, a lower and a pedal keyboards and musical tone generating circuits dependently corresponding to respective keyboards and, in addition thereto, an auxiliary musical tone generating circuit which is independent of the keyboards and can be selectively coupled with a particular keyboard according to the designation by a keyboard selection switch. This auxiliary musical tone generating circuit produces tone signals having a particular tone color. Key codes for a selected one of the keyboards among key codes supplied by a channel assignment circuit are latched separately in the auxiliary circuit, and musical tones corresponding to the latched key codes are produced in this particular tone color. An envelope control circuit of the electronic musical instrument includes a detection circuit which detects switching of the keyboard selection switch and the amplitude envelope of a musical tone is temporarily cleared upon detection of the switching of the keyboard selection switch.

Abstract translation: 一个电子乐器具有一个上，下和一个与各个键盘相对应的踏板键盘和乐音产生电路，另外还有一个独立于键盘的辅助乐音产生电路，并且可以选择性地与 根据由键盘选择开关指定的特定键盘。 该辅助乐音产生电路产生具有特定音色的音调信号。 由频道分配电路提供的键码之间的所选择的一个键盘的键码被分别锁存在辅助电路中，并且以该特定音色产生与锁存的键码对应的乐音。 电子乐器的包络控制电路包括检测键盘选择开关的切换的检测电路，并且在检测到键盘选择开关的切换时，音调的幅度包络被暂时清除。

公开(公告)号：US4218948A

公开(公告)日：1980-08-26

申请号：US972031

申请日：1978-12-21

Applicant: Akira Nakada ,  Eiichiro Aoki ,  Akiyoshi Oya ,  Takatoshi Okumura ,  Yasuji Uchiyama ,  Eiichi Yamaga

Inventor： Akira Nakada ,  Eiichiro Aoki ,  Akiyoshi Oya ,  Takatoshi Okumura ,  Yasuji Uchiyama ,  Eiichi Yamaga

IPC: G10H1/00 ,  G10H1/02 ,  G10H1/053 ,  G10H1/22 ,  G10H5/00

CPC classification number: G10H1/053 ,  G10H1/22 ,  Y10S84/02 ,  Y10S84/20

Abstract: An electronic musical instrument of a key code processing type includes a single tone generating section for producing a solo performance effect without providing a solo performance keyboard. This single tone generating section comprises a single data selection circuit which selects the highest (or lowest) note from among notes of depressed keys for producing a single musical tone. The single data selection circuit includes first and second memories and a comparison circuit. An input key code A is compared with a key code X stored in the second memory and the input key code A is stored in the first memory if the value of the input key code A is greater than the value of the key code X. When one cycle of the above described comparison has been completed, the data stored in the second memory is rewritten with the data of the first memory. The key code for the highest note is now stored in the second memory to designate a tone signal to be produced for a solo performance.

Abstract translation: 一种键码处理类型的电子乐器包括一个用于产生独奏性能效果而不提供独奏性能键盘的单色产生部分。 该单音产生部分包括单个数据选择电路，其从用于产生单个乐曲的按压键的音符中选择最高（或最低）音符。 单个数据选择电路包括第一和第二存储器和比较电路。 输入键代码A与存储在第二存储器中的键代码X进行比较，并且如果输入键代码A的值大于键代码X的值，则输入键代码A被存储在第一存储器中。当 上述比较的一个周期已经完成，存储在第二存储器中的数据被第一存储器的数据重写。 最高音符的键码现在存储在第二个存储器中，以指定要为单曲演奏而产生的音调信号。

公开(公告)号：US4186635A

公开(公告)日：1980-02-05

申请号：US812377

申请日：1977-07-01

Applicant: Eiichiro Aoki ,  Akira Nakada

Inventor： Eiichiro Aoki ,  Akira Nakada

IPC: G10H1/18 ,  G10H7/00 ,  G10H1/00 ,  G10H5/00

CPC classification number: G10H1/182

Abstract: In an electronic musical instrument, numerical values corresponding to respective notes are generated on a time-shared basis, the generated numerical values are cumulatively added for each note in synchronism with a predetermined time slot and carry signals coming out as results of the accumulations of the respective numerical values respectively constitute note frequency signals. By simplifying a tone source circuit in this manner and by selecting generated frequency signals in accordance with depression of keys, the number of conductors connecting a keyboard circuit with the tone source circuit can be reduced.

Abstract translation: 在电子乐器中，在时间共享的基础上产生对应于各个音符的数值，所产生的数值与预定的时隙同步地累积地相加于每个音符，并且作为累加的结果输出作为结果的信号 各自的数值分别构成音频信号。 通过以这种方式简化音源电路并且通过根据键的按压选择所生成的频率信号，可以减少连接键盘电路与音源电路的导体数目。

公开(公告)号：US4161128A

公开(公告)日：1979-07-17

申请号：US859042

申请日：1977-12-09

Applicant: Shigeru Yamada ,  Eiichiro Aoki

Inventor： Shigeru Yamada ,  Eiichiro Aoki

IPC: G10H1/057 ,  G10H7/00 ,  G10H1/02

CPC classification number: G10H1/0575

Abstract: An electronic musical instrument comprises a circuit for generating a stepwise envelope waveform which modulates a musical tone waveform signal, a detecting circuit for detecting the phase of the musical tone waveform signal where the amplitude of the musical tone waveform signal becomes the zero level, and a control circuit for bringing the amplitude of the envelope waveform to be at the zero level in synchronization with the detection of that phase of the tone signal by the detecting circuit if generation of the envelope waveform is to be finished, thereby to eliminate the generation of click sounds.

Abstract translation: 电子乐器包括用于产生调制乐音波形信号的逐步包络波形的电路，用于检测音乐波形信号的振幅变为零电平的乐音波形信号的相位的检测电路，以及 与包络波形的生成结束时检测电路的音调信号的相位的检测同步地使包络波形的振幅与零电平同步的控制电路，从而消除点击的产生 声音

公开(公告)号：US4160404A

公开(公告)日：1979-07-10

申请号：US844463

申请日：1977-10-21

Applicant: Shigeru Yamada ,  Eiichiro Aoki

Inventor： Shigeru Yamada ,  Eiichiro Aoki

IPC: G10H1/057 ,  G10H1/12 ,  G10H1/26 ,  G10H1/36 ,  G10H7/06 ,  G10H1/02 ,  G10H5/10

CPC classification number: G10H7/06 ,  G10H1/12 ,  G10H1/26

Abstract: An electronic musical instrument comprising a plurality of tone forming systems having mutually different tone production modes. One of such tone forming systems can produce a tone continuously while another of such systems can produce a tone intermittently. Further, in a case where a plurality of tones are to be produced, one of such systems can produce these tones intermittently one tone after another while another of such systems can produce these tones simultaneously and intermittently. By producing tones from such systems of different tone production modes, an intricate musical tone effect is obtained.

Abstract translation: 一种电子乐器，包括具有相互不同音调产生模式的多个色调形成系统。 这种音调形成系统之一可以连续地产生音调，而另一个这样的系统可以间歇地产生音调。 此外，在要产生多个音调的情况下，这些系统之一可以间歇地产生这些音调，而另一个这样的系统可以同时和间歇地产生这些音调。 通过从不同音调制作模式的系统产生音调，可以获得复杂的乐音效果。