公开(公告)号：US5962802A

公开(公告)日：1999-10-05

申请号：US175513

申请日：1998-10-20

申请人： Akira Iizuka

发明人： Akira Iizuka

IPC分类号： G10H1/00 ,  G10H1/053 ,  G10H1/36 ,  G10H1/06 ,  G10H1/26

CPC分类号： G10H1/36 ,  G10H1/0041 ,  G10H1/053 ,  G10H2240/085 ,  G10H2240/311

摘要： Groove data for imparting a variation to one or more predetermined factors, such as generation timing, gate time and velocity, of a tone based on the automatic performance data are stored in a memory as a groove template. Further, modification data for modifying variation amounts of the predetermined factors are stored in the memory in a time series in corresponding relation to progression of an automatic performance. Automatic performance is carried out by modifying the variation amounts of the one or more predetermined factors in the groove template in accordance with the modification data and thus modifying the predetermined factors of the tone, based on the automatic performance data, in accordance with the thus-modified variation amounts.

摘要翻译： 用于将基于自动演奏数据的音调的一个或多个预定因素（诸如生成时间，门时间和速度）的变化的凹槽数据作为凹槽模板存储在存储器中。 此外，用于修改预定因子的变化量的修改数据以与自动演奏的进展相对应的时间序列存储在存储器中。 通过根据修改数据修改凹槽模板中的一个或多个预定因子的变化量，并根据自动演奏数据，根据自动演奏数据修改音调的预定因子，从而进行自动演奏， 改变变异量。

公开(公告)号：US5298673A

公开(公告)日：1994-03-29

申请号：US673133

申请日：1991-03-20

申请人： Akira Iizuka ,  Keiji Kawakami

发明人： Akira Iizuka ,  Keiji Kawakami

IPC分类号： G10H1/24 ,  G10H1/053 ,  G10H1/057 ,  G10H1/18 ,  G10H7/00 ,  G10H1/06 ,  G10H1/46

CPC分类号： G10H1/057 ,  G10H1/186

摘要： An electronic musical instrument for generating musical tone signal including a performance data generating part or generating performance data such as key-on, key-code and key-touch. The instrument also includes a control circuit for generating musical tone control data such as envelope rate data, envelope level data and initial phase data according to the performance data. Further, the control circuit adopts the time-sharing technology for generating plural musical tone signal, so that this instrument is comparatively simple at its circuit configuration compared with the prior art.

摘要翻译： 一种电子乐器，用于产生包括演奏数据产生部分的乐音信号或产生诸如键入，键代码和按键触摸的演奏数据。 仪器还包括根据性能数据产生诸如包络率数据，包络电平数据和初始相位数据之类的乐音控制数据的控制电路。 此外，控制电路采用分时技术产生多个音调信号，使得该仪器在电路配置上与现有技术相比相对简单。

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：US5000074A

公开(公告)日：1991-03-19

申请号：US370621

申请日：1989-06-23

申请人： Toshihiro Inoue ,  Akira Iizuka ,  Chifumi Takeuchi

发明人： Toshihiro Inoue ,  Akira Iizuka ,  Chifumi Takeuchi

IPC分类号： G10H1/00 ,  G10H7/12

CPC分类号： G10H7/12 ,  G10H1/0091 ,  G10H2210/281 ,  G10H2250/035

摘要： A variable delay circuit for delaying an input signal and being capable of changing length of this delay is provided and various modulation effects are imparted by this delay. When change in the delay length has been designated, a decay envelope is imparted to a delay output tone signal corresponding to the delay length before the change and then a rise envelope is imparted to a delay output signal corresponding to the delay length after the change. Generation of a click noise during the change in the delay length thereby is prevented. Alternatively, when the delay length is to be changed, a decay envelope is imparted to a delay output signal corresponding to the delay length before the change and, simultaneously, a rise envelope is imparted to a delay output tone signal corresponding to the delay length after the delay and the two signals are combined. Alternatively further, when the delay length is to be changed, the delay length is sequentially changed in plural steps from the delay length before the change to the delay length after the change.

摘要翻译： 提供了用于延迟输入信号并且能够改变该延迟的长度的可变延迟电路，并且通过该延迟赋予各种调制效果。 当指定了延迟长度的变化时，对与延迟长度相对应的延迟输出音信号赋予衰减包络线，然后将上升包络赋予对应于改变之后的延迟长度的延迟输出信号。 防止在延迟长度的变化期间产生点击噪音。 或者，当要改变延迟长度时，将衰减包络赋予对应于改变之前的延迟长度的延迟输出信号，同时，将上升包络赋予对应于延迟长度之后的延迟输出音信号 延迟和两个信号被组合。 或者，当要改变延迟长度时，延迟长度从改变之前的延迟长度到改变之后的延迟长度的多个步骤顺序地改变。

公开(公告)号：US4773294A

公开(公告)日：1988-09-27

申请号：US133242

申请日：1987-12-10

申请人： Akira Iizuka ,  Keiji Kawakami

发明人： Akira Iizuka ,  Keiji Kawakami

IPC分类号： G10H1/18 ,  G10H1/00 ,  G10H1/053 ,  G10H1/057 ,  G10H1/24 ,  G10H1/06 ,  G09B15/02 ,  G10H1/40 ,  G10H7/00

CPC分类号： G10H1/24 ,  Y10S84/12

摘要： There is provided a selection switch for selecting musical information determining characteristics of a tone such as a tone color. This selection switch is pre-assigned with first musical information. Switches and circuits are provided for assigning second musical information to the selection switch. This second musical information is one selected as desired from among plural musical information. Thus, at least two musical information of the pre-assigned first musical information and the selectively assigned second musical information are assigned to the selection switch. There is also provided a mode selection switch. When a first mode has been selected by this mode selection switch, a characteristic of a tone to be produced is determined by the first musical information. When the second mode has been selected, a characteristic of a tone to be produced is determined by the second musical information.

摘要翻译： 提供了一种用于选择确定诸如音色之类的音调特性的音乐信息的选择开关。 该选择开关被预先分配有第一音乐信息。 提供开关和电路用于将第二音乐信息分配给选择开关。 该第二音乐信息是从多个音乐信息中根据需要选择的。 因此，预先分配的第一音乐信息和选择性分配的第二音乐信息的至少两个音乐信息被分配给选择开关。 还提供了模式选择开关。 当通过该模式选择开关选择了第一模式时，要产生的音调的特性由第一音乐信息确定。 当选择了第二模式时，要产生的音调的特性由第二音乐信息确定。