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41. 发明授权

US4122743A Electronic musical instrument with glide 失效
标题翻译：电子乐器滑翔
公开(公告)号：US4122743A
公开(公告)日：1978-10-31
申请号：US823236
申请日：1977-08-09
申请人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
发明人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
IPC分类号： G10H1/053 , G10H7/04 , G10H1/02
CPC分类号： G10H7/04 , G10H1/053
摘要： In a digital type electronic musical instrument, a glide effect is produced by digitally frequency-modulating the frequency of a musical tone in such a manner that the frequency changes quickly and smoothly. Glide information used for effecting this frequency-modulation is produced on the basis of a glide code obtained by counting a clock pulse. The glide information which changes its contents uniformly is multiplied with the basic frequency information to effect the frequency-modulation. The glide effect can be controlled for each individual keyboard. According to an embodiment of the invention, the frequency-modulation is applied to an attack portion of a musical tone only and sustain and decay portions of the musical tone are reproduced with a normal frequency so that the musical tone will be provided with a crisp, vivid musical effect.
摘要翻译：在数字式电子乐器中，通过以频率快速平稳地变化的方式对音调的频率进行数字频率调制来产生滑行效果。基于通过对时钟脉冲进行计数获得的滑行码产生用于实现该频率调制的滑动信息。将其内容均匀地改变的滑翔信息与基本频率信息相乘以实现频率调制。可以为每个单独的键盘控制滑行效果。根据本发明的实施例，频率调制仅应用于音调的攻击部分，并且以正常频率再现乐音的部分维持和衰减，使得乐音将被提供有清晰，生动的音乐效果。

42. 发明授权

US4036096A Musical tone waveshape generator 失效
标题翻译：乐音波形发生器
公开(公告)号：US4036096A
公开(公告)日：1977-07-19
申请号：US594809
申请日：1975-07-10
申请人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
发明人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
IPC分类号： G10H7/08 , G10H7/10 , G10H1/00 , G10H5/00
CPC分类号： G10H7/10 , G10H7/08 , G10H2250/621
摘要： The invention is directed to a waveshape generator capable of producing a desired waveshape by previously storing basic amplitudes obtained by sampling one period of the waveshape at a coarse interval and calculating amplitudes with a fine interval between the basic amplitudes. While basic amplitudes A and B are sequentially produced at a coarse interval in response to an integer portion of the input data, a function X (c) is produced in response to a fraction portion of the input data. Waveshape amplitudes are interpolated between the basic amplitudes by carrying out calculation of A + (B - A) .times. X(c) in response to these values A, B and X(c). A special form of function X(c) is also used for applying interpolation by a partial waveshape of a trigonometric function wave. An example of a musical tone waveshape generator is also described in which different waveshapes are produced depending upon different tone ranges by moving the position of a radix point for each of the different tone ranges.
摘要翻译：本发明涉及一种波形发生器，其能够通过预先存储通过以粗略间隔对一个波形周期进行采样而获得的基本振幅来产生期望的波形，并且以基本振幅之间的精细间隔计算幅度。虽然响应于输入数据的整数部分以粗略的间隔顺序地产生基本幅度A和B，但是响应于输入数据的分数部分产生函数X（c）。通过响应于这些值A，B和X（c）执行A +（B-A）×X（c）的计算，在基本幅度之间插入波形幅度。函数X（c）的特殊形式也用于通过三角函数波的部分波形进行插值。还描述了一种乐音波形发生器的示例，其中根据不同的音调范围通过移动每个不同音调范围的小数点的位置而产生不同的波形形状。

43. 发明授权

US4033221A Key switch system 失效
标题翻译：钥匙开关系统
公开(公告)号：US4033221A
公开(公告)日：1977-07-05
申请号：US602631
申请日：1975-08-11
申请人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
发明人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
IPC分类号： G10H1/18 , G10H7/02 , G10F1/00
CPC分类号： G10H1/187 , G10H7/02
摘要： This key switch system (1) scans closed (or open) key switches in a matrix to produce corresponding key data, (2) encodes these key data into corresponding key codes, and (3) effectively registers the encoded key codes into time-shared channels of a key code memory.The key switch system may be incorporated in an electronic musical instrument. The system includes a key data generator which produces block data consisting of one pulse per scanning cycle in a time slot representing a block to which a key switch which is ON belongs, and note data consisting of a pulse in a time slot representing the particular key switch which is ON in the block indicated by the block data. A key coder encodes the block data and note data supplied from the data generator into key codes each representing the key name of the depressed key. A channel processor allots the key codes to storage channels of a key code memory having a number of such channels equal to the maximum number of tones to be reproduced simultaneously.
摘要翻译：该钥匙开关系统（1）扫描矩阵中的关闭（或打开）钥匙开关以产生相应的钥匙数据，（2）将这些钥匙数据编码成对应的钥匙码，（3）有效地将编码的钥匙码注册为时间共享通道的密钥代码存储器。

44. 发明授权

US3979996A Electronic musical instrument 失效
标题翻译：电子乐器
公开(公告)号：US3979996A
公开(公告)日：1976-09-14
申请号：US581186
申请日：1975-05-27
申请人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
发明人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
IPC分类号： G10H1/02 , G10H7/04 , G10H5/00
CPC分类号： G10H7/04 , G10H1/02 , G10H2210/211
摘要： In a digital type electronic musical instrument in which basic frequency is cumulatively counted and a musical tone waveshape is read from a memory by the resultant output of the cumulative counting, a desired vibrato effect is produced by digitally frequency-modulating the basic frequency. Vibrato information for effecting the frequency-modulation is produced from a vibrato code obtained by counting a clock pulse and a vibrato depth signal and has contents which change as time elapses. The frequency-modulation is made by multiplying the basic frequency with the vibrato information. The vibrato depth may be controlled for each individual keyboard. Vibrato frequency may be changed by changing the frequency of the clock pulse for each keyboard. According to an embodiment of the invention, the vibrato depth progressively increases from the start of reproduction of the musical tone. The speed of change of the vibrato depth may also be controlled for each individual keyboard.
摘要翻译：在通过累积计数的合成输出累积计数基本频率并从存储器读取乐音波形的数字式电子乐器中，通过对基本频率进行数字频率调制来产生期望的颤音效果。用于实现频率调制的振动信息是通过对时钟脉冲和颤音深度信号进行计数而获得的颤音码产生的，并且具有随着时间流逝而变化的内容。通过将基本频率与颤音信息相乘来进行频率调制。可以为每个单独的键盘控制颤音深度。可以通过改变每个键盘的时钟脉冲的频率来改变振动频率。根据本发明的实施例，颤音深度从音乐的再现开始逐渐增加。也可以为每个单独的键盘控制颤音深度的变化速度。

45. 发明授权

US3979989A Electronic musical instrument 失效
标题翻译：电子乐器
公开(公告)号：US3979989A
公开(公告)日：1976-09-14
申请号：US581184
申请日：1975-05-27
申请人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
发明人： Norio Tomisawa , Yasuji Uchiyama , Takatoshi Okumura , Toshio Takeda
IPC分类号： G10H1/18 , G10H7/04 , G10H5/00
CPC分类号： G10H1/187 , G10H7/04
摘要： In a digital type electronic musical instrument in which frequency information corresponding to a depressed key is cumulatively counted and a musical tone waveshape is read from a memory by the resultant output of the cumulative counting, modified frequency information is produced by adding to or subtracting from said frequency information second frequency information represented by a predetermined frequency difference. A tone of a pitch which is slightly different from a normal pitch is generated from this modified frequency information for producing a beat effect between notes in an octave relation. The pitch can be controlled by suitably adjusting the second frequency information. Different beat effects can be produced for respective keyboards by varying the second frequency information by each keyboard. According to an alternative embodiment of the invention, two or more sets of tone reproduction systems are provided and the beat effect is produced by depression of a single key by varying modified frequency information for the respective tone reproduction systems.
摘要翻译：在通过累积计数的合成输出累积计数对应于按下的键的频率信息和从存储器读取乐音波形的数字式电子乐器中，通过将累加计数的合成输出相加或减去来产生修正频率信息由预定频率差表示的频率信息第二频率信息。从用于产生八度关系的音符之间的节奏效果的该修改频率信息产生与正常音调稍微不同的音调的音调。可以通过适当地调整第二频率信息来控制音调。通过每个键盘改变第二频率信息可以为各个键盘产生不同的拍子效果。根据本发明的替代实施例，提供了两组或更多组音调再现系统，并且通过改变各个音调再现系统的修改频率信息来抑制单个键来产生节奏效果。

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