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公开(公告)号：US4109208A
公开(公告)日：1978-08-22
申请号：US556951
申请日：1975-03-10
CPC分类号： G10H7/04 , G10H1/0575
摘要： In a waveform producing system for use in, for example, an electronic musical instrument, a tone generator circuit and/or a tone control circuit including tone keyer circuits, each or either one of said tone generator circuit and said tone control circuit comprises: pulse generators associated with key-actuated switches, respectively; waveform memorizing means having at least one row of voltage dividers of which the division ratios are preset in characteristics corresponding to either the tone waveforms, the tone envelopes or the depression speeds of the key operated by the player of the instrument; sequential memory read-out means connected to the respective voltage dividers; and pulse generators thereby providing an enabling signal sequentially to the individual dividers every time a pulse is inputted from the pulse generators to read-out the memorized waveform in the form of a modified audio signal at the output side of the circuit. The memorized waveforms can arbitrarily be sampled (scanned) out by using a sampling circuit in the read-out means, thereby providing variations in the modified audio signal. The tone control circuit enables the tone level control in conformity to the depression speed of the key and tone envelope control without the need to employ the conventional charge-discharge circuit requiring a relatively large capacitance capacitor, and makes it easy to carry out circuit integration.
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公开(公告)号：US4026180A
公开(公告)日：1977-05-31
申请号：US581181
申请日：1975-05-27
IPC分类号： G10H1/043
CPC分类号： G10H1/043
摘要： In a digital type electronic musical instrument in which basic 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, a musical tone including a coarse noise is produced by randomly frequency-modulating the basic frequency of the musical tone, thereby providing the tone with a random vibrato effect. The frequency-modulation is effected by randomly adding or subtracting information expressed in the form of a certain frequency difference relative to the basic frequency information to or from the basic frequency information. According to an embodiment of the invention, a noise effect is produced only during a rise portion of the musical tone by reducing noise component in steps from the start of depression of a key and reproducing a musical tone of a normal pitch after a lapse of a predetermined period of time. The degree of the noise effect can 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与按下的键对应的基本频率信息并从存储器中读出乐音波形的数字式电子乐器中，通过随机地产生包括粗噪声的乐音 对音调的基本频率进行频率调制，从而提供具有随机颤音效果的音调。 通过以相对于基本频率信息为基准频率信息的特定频率差异的形式表示的信息，从基本频率信息中随机增加或减去信息来实现频率调制。 根据本发明的一个实施例，噪声效应仅在音乐的上升部分期间通过从键的开始逐步减小噪声分量并在经过一个音调之后再现正常音调的乐音而产生 预定时间段。 可以对每个单独的键盘控制噪音效果的程度。
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公开(公告)号：US4122743A
公开(公告)日：1978-10-31
申请号：US823236
申请日：1977-08-09
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。
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公开(公告)号：US4036096A
公开(公告)日：1977-07-19
申请号：US594809
申请日：1975-07-10
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。
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公开(公告)号：US4033221A
公开(公告)日：1977-07-05
申请号：US602631
申请日：1975-08-11
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。
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公开(公告)号：US3979996A
公开(公告)日：1976-09-14
申请号：US581186
申请日：1975-05-27
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。
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公开(公告)号：US3979989A
公开(公告)日：1976-09-14
申请号：US581184
申请日：1975-05-27
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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公开(公告)号：US4235142A
公开(公告)日：1980-11-25
申请号：US904
申请日：1979-01-04
申请人： Akira Nakada , Eiichiro Aoki , Akiyoshi Oya , Takatoshi Okumura , Yasuji Uchiyama , Eiichi Yamaga
发明人： Akira Nakada , Eiichiro Aoki , Akiyoshi Oya , Takatoshi Okumura , Yasuji Uchiyama , Eiichi Yamaga
CPC分类号： G10H1/28 , G10H1/182 , G10H1/36 , G10H2210/221
摘要： An electronic musical instrument is of a time-shared digital processing type and capable of producing musical tones for a special performance. There are provided, at suitable time intervals, time periods in which no key code of a depressed key is produced by a key coder. During these time periods, a signal designating a special performance is generated. In a channel assignment circuit which assigns key codes of depressed keys to plural tone production channels there is provided a channel for an exclusive use for the special performance. A circuit for assigning data for the special performance transmits the data to the channel assignment circuit in response to the special performance designation signal from the key coder so that the data selected from among the key data already assigned to the tone production channels for ordinary performance are sequentially assigned to the channel allotted exclusively for the special performance. As an example of the special performance, description is made with respect to an automatic arpeggio performance in which tones are produced at designated orders of location from the lowest tone among the tones of the depressed keys.
摘要翻译： 电子乐器具有时间共享的数字处理类型，能够产生用于特殊表演的乐音。 以合适的时间间隔提供了一个键控编码器不产生按下的键的键码的时间段。 在这些时间段内，产生指定特殊性能的信号。 在向多个音调产生频道分配按下的键的键码的频道分配电路中，提供专用于特殊演奏的频道。 用于分配用于特殊性能的数据的电路响应于来自密钥编码器的特殊性能指定信号将数据发送到信道分配电路，使得从已经分配给用于普通性能的音调产生信道的密钥数据中选择的数据是 顺序分配给专门用于特殊演出的频道。 作为特殊性能的一个例子，对于自动琶音性能进行描述，其中在按下的按键的音调之间的最低音调的指定指定的位置产生音调。
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9.发明授权
公开(公告)号：US4524668A
公开(公告)日：1985-06-25
申请号：US434604
申请日：1982-10-15
申请人： Norio Tomisawa , Yasuji Uchiyama , Hideo Suzuki
发明人： Norio Tomisawa , Yasuji Uchiyama , Hideo Suzuki
CPC分类号： G10H1/053 , G10H7/008 , G10H2210/221
摘要： An electronic musical instrument comprises means for detecting depressed-keys on a keyboard to generate key informations corresponding to said depressed keys, and means for generating a musical tone signal which varies pitch from the pitch of a musical tone generated by a firstly-depressed key to the pitch of a musical tone generated by a secondly-depressed key, in accordance with a key information of said firstly-depressed key and a key information of said secondly-depressed key. In the instrument, means is provided for generating an amplitude coefficient which sequentialy varies from an amplitude of the musical tone generated by the firstly-depressed key to an amplitude of the musical tone generated by the secondly-depressed key whereby the amplitude of said musical tone signal is controlled according to said amplitude coefficient.
摘要翻译： 电子乐器包括用于检测键盘上的按键以产生与所述按下的键相对应的键信息的装置，以及用于产生音调信号的装置，该乐音信号与由先按键产生的乐音的音高不同， 根据所述首先按下的键的键信息和所述第二按键的键信息，由第二按键生成的音调的音高。 在仪器中，提供了用于产生幅度系数的装置，该幅度系数与从由第一次按下的键产生的乐音的幅度相应地变化到由第二次按下的键产生的乐音的振幅，从而所述乐音的幅度 根据所述振幅系数控制信号。
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公开(公告)号：US4217804A
公开(公告)日：1980-08-19
申请号：US952098
申请日：1978-10-17
申请人： Eiichi Yamaga , Akira Nakada , Takatoshi Okumura , Eiichiro Aoki , Akiyoshi Oya , Yasuji Uchiyama
发明人： Eiichi Yamaga , Akira Nakada , Takatoshi Okumura , Eiichiro Aoki , Akiyoshi Oya , Yasuji Uchiyama
摘要： An electronic musical instrument having a channel processor. The channel processor includes a tone production assignment circuit and an automatic arpeggio circuit. The tone production assignment circuit includes a key code memory circuit of a plurality of channels and an assignment control unit. A specific channel among the channels is used exclusively for the automatic arpeggio performance while the other channels are used for ordinary respective tone production corresponding to depressed keys by an ordinary key assignment operation responsive to depression of the keys. The automatic arpeggio circuit produces key codes one after another for the automatic arpeggio channel in accordance with the key codes already assigned to the respective ordinary channels and with arpeggio constituent orders in a sounding pattern. The arpeggio sounding pattern which is selected in response to a rhythm to be played contains binary data representing the arpeggio constituent orders. The arpeggio constituent orders herein mean the orders of the locations of the notes constituting the arpeggio alignment, the order being counted from the lowest one of the depressed keys in a predetermined keyboard range.
摘要翻译： 一种具有通道处理器的电子乐器。 频道处理器包括音调制作分配电路和自动琶音电路。 音调制作分配电路包括多个通道的键码存储电路和分配控制单元。 信道之中的特定频道专用于自动琶音性能，而其他频道用于通过响应于按键的普通键分配操作而对应于按下的按键的普通相应乐音。 自动琶音电路根据已经分配给各个普通通道的键代码和探测模式中的琶音分量命令一个接一个地产生用于自动琶音通道的键码。 响应于要播放的节奏选择的琶音探测模式包含表示琶音分量的二进制数据。 这里的琶音构成命令是指构成琶音对准的音符的位置的顺序，该顺序从预定的键盘范围中的最低的一个按下的键计数。
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