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TRIGONOMETRIC-FUNCTION WAVE GENERATION CIRCUIT USING SERIES EXPANSION
TRIGONOMETRIC-FUNCTION WAVE GENERATION CIRCUIT USING SERIES EXPANSION
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机译:使用级数展开的三角函数波生成电路
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摘要
A DTMF signal generating circuit is provided with a frequency designating unit which designates frequencies to form a DTMF signal, a sinusoidal wave computing unit which computes sinusoidal waves by referring to frequencies designated by the frequency designating unit, and a sinusoidal wave synthesizing unit which synthesizes two sinusoidal waves computed by the sinusoidal wave computing unit. The sinusoidal wave computing unit is provided with operators such as an adder-subtracter and a multiplier and generates a sinusoidal wave by determining terms of a Taylor expansion of a sinusoidal function by arithmetic operation.
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