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1. 发明授权

US4344343A Polyphonic digital synthesizer of periodic signals 失效
标题翻译：复数数字合成器的周期信号
公开(公告)号：US4344343A
公开(公告)日：1982-08-17
申请号：US158251
申请日：1980-06-10
申请人： Christian T. Deforeit
发明人： Christian T. Deforeit
IPC分类号： G10H7/02 , G10H7/08 , G10H1/00
CPC分类号： G10H7/08 , G10H2210/205 , G10H2250/161
摘要： An entirely digital polyphonic musical synthesizer in which the amplitude of each spectral component may develop either linearly or logarithmically as a function of time, including amplitude computation means which produce, for each period of an amplitude clock signal, a new current amplitude value by linear or logarithmic interpolation between the initial current amplitude and a predetermined final amplitude value. The new current amplitude value is memorized in place of the initial value. When the current amplitude is equal to the final amplitude, a signal is transmitted to the synthesizer control means. The synthesizer enables gentle modulations in amplitude to be obtained and reduces the complexity of the instrument's control means.
摘要翻译：一种全数字复音音乐合成器，其中每个频谱分量的振幅可以以时间的形式线性或对数地形成，包括幅度计算装置，其对幅度时钟信号的每个周期产生新的电流幅度值，线性或初始电流幅度与预定最终振幅值之间的对数插值。新的当前幅度值被存储代替初始值。当电流幅度等于最终幅度时，信号被发送到合成器控制装置。合成器可以获得幅度的柔和调制，并降低仪器控制手段的复杂性。

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