公开(公告)号：US4292873A

公开(公告)日：1981-10-06

申请号：US101904

申请日：1979-12-10

申请人： Takatoshi Okumura ,  Seiya Hamada ,  Akio Imamura

发明人： Takatoshi Okumura ,  Seiya Hamada ,  Akio Imamura

IPC分类号： G10H1/057 ,  G10H1/18 ,  G10H5/00

CPC分类号： G10H1/185 ,  G10H1/057

摘要： An electronic musical instrument comprises a key on-off memory for storing the on-off state of the respective keys, and at a time counter for counting the lapse of time after release of the respective keys. The time counter inhibits generation of the musical tone signal corresponding to the key when the conditions that predetermined time is elapsed after the key release and that the key-off state is stored in the memory are satisfied. This inhibition is separately conducted with respect to the keys. Thus, it can remarkably prevent noise when the tone should not be produced.

摘要翻译： 电子乐器包括用于存储各个键的开 - 关状态的键开关存储器，以及用于计数各个键释放之后的时间流逝的时间计数器。 当在键释放之后经过预定时间的条件并且关闭状态被存储在存储器中时，时间计数器抑制对应于该键的乐音信号的产生。 这种抑制分别针对键进行。 因此，当不应该产生音调时，可以显着地防止噪音。

公开(公告)号：US4328732A

公开(公告)日：1982-05-11

申请号：US193605

申请日：1980-10-03

申请人： Toshio Takeda ,  Takehisa Amano ,  Sigeki Isii ,  Seiya Hamada

发明人： Toshio Takeda ,  Takehisa Amano ,  Sigeki Isii ,  Seiya Hamada

IPC分类号： G10H1/18 ,  G10H1/36 ,  G10H7/00 ,  G10H5/00

CPC分类号： G10H1/36 ,  G10H2210/175 ,  Y10S84/02 ,  Y10S84/22

摘要： A polyphonic, keyboard-type electronic musical instrument capable of automatic production, in response to key depressions on upper and lower keyboards, of "fill notes" which bear the same note names as the depressed lower keys but which, preferably, fall within an octave below the lowest pressed upper key at every moment. The instrument is of the type wherein each depressed key is coded into key data in accordance with a binary "key code" composed of a note code and an octave code. The note code identifies the note name of each key, whereas the octave code identifies the octave to which the key belongs. Upon depression of a key on each of the upper and lower keyboards, the note-coded data derived from the key date representative of the depressed lower key are combined with the octave-coded data derived from the key data representative of the depressed upper key if the note name of the depressed lower key is below that of the depressed upper key. If the depressed lower key is of a note name above that of the depressed upper key, on the other hand, then the note-coded data of the depressed lower key are combined with octave-coded data indicative of an octave just below that of the depressed upper key. The key-coded fill-note data thus formed are fed into a multichannel tone generator circuit, along with the key data representative of the depressed upper and lower keys.

摘要翻译： 一种能够自动生产的复音键盘式电子乐器，其响应于上下键盘上的键凹陷，具有与按下的下键相同的音符名称的“填充音符”，但最好在八度以内 在每一刻的最低压高键之下。 该乐器是其中每个按下的琴键根据由音符码和八度音码构成的二进制“键码”被编码成键数据的类型。 音符代码标识每个键的音符名称，而八度音代码标识键所属的八度音阶。 按下上键盘和下键盘中的每一个上的键时，从表示按下的低级键的键日期导出的音符编码数据与代表按下的上键的键数据导出的八度编码数据组合，如果 按下的下部键的音符名称低于按下的上部键的音符名称。 另一方面，如果按下的下部键的音符名称高于按压的上部键的音符编号，则按下的低音键的音符编码数据与表示八度音程码的八度音程数据组合， 沮丧的上层键。 这样形成的密钥编码填充笔记数据与代表按压的上，下键的键数据一起被馈送到多声道音调发生器电路。

公开(公告)号：US4336735A

公开(公告)日：1982-06-29

申请号：US216961

申请日：1980-12-16

申请人： Takehisa Amano ,  Seiya Hamada ,  Sigeki Isii ,  Toshio Takeda

发明人： Takehisa Amano ,  Seiya Hamada ,  Sigeki Isii ,  Toshio Takeda

IPC分类号： G10H1/18 ,  G10H1/36 ,  G10H1/22

CPC分类号： G10H1/36 ,  G10H2210/175 ,  Y10S84/22

摘要： A three-keyboard electronic musical instrument of the type generating binary-coded primary key data representative of notes played on the keyboards, and secondary key data representative of unplayed notes that are correlated with the played notes in some musically favorable way. Prior to introduction into a multi-channel tone generator circuit, part of the primary key data and all of the secondary key data are directed into a key data memory having storage channels corresponding in number to the sounding channels in the tone generator circuit available for such data. A discrimination data memory has a plurality of storage locations, corresponding to the storage channels of the key data memory, for storing binary-coded data representing the discrimination between the primary and the secondary key data stored on the corresponding storage channels of the key data memory. In response in part to the output from the discrimination data memory a memory control circuit causes the key data memory to store the primary key data in preference to the secondary key data when the key data memory has no empty channel for each incoming data, by invalidating a secondary key data already in storage.

摘要翻译： 一种产生代表在键盘上播放的音符的二进制编码的主键数据的类型的三键盘电子乐器，以及代表以一些音乐上有利的方式与播放的音符相关联的未播放音符的次要键数据。 在引入多声道乐音发生器电路之前，将主键数据和所有辅助键数据的一部分引导到具有对应于音调发生器电路中的探测通道的存储通道的密钥数据存储器 数据。 识别数据存储器具有与密钥数据存储器的存储信道相对应的多个存储位置，用于存储表示存储在密钥数据存储器的相应存储信道上的主密钥数据和次密钥数据之间的鉴别的二进制编码数据 。 响应部分地来自鉴别数据存储器的输出，当密钥数据存储器对于每个传入数据没有空信道时，存储器控制电路使得密钥数据存储器优先于次要密钥数据存储主密钥数据，通过无效 已经存储的次要密钥数据。