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1. 发明公开

EP0154888A3 Tone signal generation device for an electronic musical instrument 失效
标题翻译：用于电子音乐仪器的音频信号发生装置
公开(公告)号：EP0154888A3
公开(公告)日：1988-06-15
申请号：EP85102141
申请日：1985-02-27
申请人： Nippon Gakki Seizo Kabushiki Kaisha
发明人： Suzuki, Hideo
IPC分类号： G10H01/08 , G10H07/00
CPC分类号： G10H7/06 , G10H1/08 , G10H2250/505 , G10H2250/595 , G10H2250/625
摘要： A basic tone signal generator (10) and a difference signal generator (11) are provided. A desired tone signal is obtained by synthesizing a basic tone signal and a difference signal generated from these generators respectively. The basic tone signal has principal characteristics of a desired tone signal whose tone color (waveshape) changes subtly with time as in a tone of an acoustic musical instrument, but it is not the desired tone signal itself, including some errors, i.e., difference from the desired tone signal. The difference signal represents the difference between the desired tone signal and the basic tone signal. Since the basic tone signal is consitituted by basic tone data whose data amount can be substantially reduced as compared to an amount of data required for reproducing the desired tone signal itself with a high resolution and the difference signal is constituted by difference data whose data amount can be very small. Therefore, a tone synthesization by combining the basic tone signal and the difference signal contributes greately to the simplification of the circuit construction of an electronic musical instrument.

2. 发明公开

EP0150736A3 Tone signal generation device for an electronic musical instrument 失效
标题翻译：用于电子音乐仪器的音频信号发生装置
公开(公告)号：EP0150736A3
公开(公告)日：1986-06-25
申请号：EP85100233
申请日：1985-01-11
申请人： Nippon Gakki Seizo Kabushiki Kaisha
发明人： Fujimori, Junichi c/o Nippon Gakki Seizo K.K. , Sugiyama, Jun c/o Nippon Gakki Seizo K.K.
IPC分类号： G10H07/00 , G10H01/08
CPC分类号： G10H1/08 , G10H7/008
摘要： A musical tone signal generator for an electronic musical instrument is constructed by a waveshape generator (13, 14), a function generator (16) and an interpolator (18, 19, 20). The waveshape generator (13, 14) successively generates adjacent two waveshapes of a plurality of different waveshapes which have been intermittently sampled in an actual produced tone. The function generator (16) generates an interpolation function which is a function of time. The interpolator (18, 19, 20) weights the adjacent two waveshapes in accordance with the interpolation function, combines the weighted two waveshapes and outputs the combined waveshape as a musical tone waveshape to be produced at a rate corresponding to a frequency of the musical tone waveshape. In the waveshape generator (13, 14), the generation of next two adjacent waveshapes are performed when a value of the interpolation function has become equal to a predetermined value. As a result, it is made possible to obtain a good quality timewise spectrum change of the musical tone waveshape.

3. 发明申请

WO1998032123A1 MUSIC CHIP 审中-公开
标题翻译：音乐芯片
公开(公告)号：WO1998032123A1
公开(公告)日：1998-07-23
申请号：PCT/US1997022761
申请日：1997-12-15
申请人： ATMEL CORPORATION
发明人： ATMEL CORPORATION , DEFOREIT, Christian, J.
IPC分类号： G10H01/08
CPC分类号： G10H1/125 , G10H1/02
摘要： The present invention discloses a digital processing device with a smooth-clipping function (25) and a digital musical tone synthesizing device using it. When one or a plurality of digital values are input to the digital processing device and a smooth-clipping mode is activated, an overflow during processing of the digital values is avoided as the internal resulting value of the device is scaled down before it is output. The scaling down of the internal resulting value is continuously increased in dependence on the increase of the value of the internal resulting value, such that an overflow is avoided. For example, if the digital processing device is performing a summation of two digital operands in a digital musical tone forming device, the time behavior of the resulting tone signal slope is smooth and thus the sound dynamics are improved and sound distortions are avoided during sound reproduction.
摘要翻译：本发明公开了一种具有平滑削波功能的数字处理装置（25）和使用它的数字乐音合成装置。当将一个或多个数字值输入到数字处理装置并且平滑削波模式被激活时，在数字值的处理期间，由于在输出装置的内部结果值被缩小之前，所以避免了溢出。内部结果值的缩小依赖于内部结果值的值的增加而不断增加，从而避免溢出。例如，如果数字处理装置在数字乐音形成装置中执行两个数字操作数的总和，则所得到的音调信号斜率的时间行为是平滑的，因此改善了声音动力学，并且在声音再现期间避免了声音失真。

4. 发明申请

WO1981001899A1 ELECTRONIC MUSIC INSTRUMENT 审中-公开
标题翻译：电子音乐仪器
公开(公告)号：WO1981001899A1
公开(公告)日：1981-07-09
申请号：PCT/US1980001690
申请日：1980-12-19
申请人： NORMAN T
IPC分类号： G10H01/08
CPC分类号： G10H1/08 , G10H1/057 , G10H5/06 , Y10S84/02 , Y10S84/30
摘要： An electronic musical instrument (1) simulates a stringed musical instrument such as a guitar. Musical sounds of appropriate frequency and envelope are provided. An oscillator (34) provides a reference clock frequency to a digital counter (38) which is controlled by touch circuits (46) and a digital circuit (36) to divide the reference clock frequency into an appropriate output frequency. An envelope control circuit (40) shapes the output frequency to simulate a stringed musical instrument.
摘要翻译：电子乐器（1）模拟诸如吉他的弦乐器。提供适当频率和信封的音乐声音。振荡器（34）为由数字计数器（38）提供参考时钟频率，数字计数器（38）由触摸电路（46）和数字电路（36）控制，以将参考时钟频率分成适当的输出频率。信封控制电路（40）对输出频率进行整形以模拟弦乐器。

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