摘要
运用数学推导的方法,分析了信号发生频率,波形输出频率和波形长度之间的关系,推导出了生成数字正弦单频波形,正弦多频波形,以及复合正弦多频波形的数学公式,解决了数字信号处理中常用数字正弦波形的快速生成问题。以C编程语言进行实验,证明这些公式具有较高的通用性和易用性,可以方便快速的帮助人们产生出各种数字正弦波形,极大的提高了工作效率。
This article analyzes the relationship between sampling rate,waveform cycle and waveform point number by the way of mathematical derivation,derivates the mathematical formulas of digital single tone sinusoidal waveform,multi-tone sinusoidal waveform and complex multi-tone sinusoidal waveform and finally solves the problem of fast generation all kinds of sinusoidal waveforms in a digital signal processing system.Experiments by C programming language prove these formulas are highly universal and can be easily and quickly to help people produce a variety of digital sinusoidal waveforms,avoid duplication of mathematical derivation and greatly improve efficiency.
出处
《电子设计工程》
2011年第10期19-21,共3页
Electronic Design Engineering
关键词
数字信号处理
数字正弦波形
单频
多频
复合多频
公式
digital signal processing（DSP）
sinusoidal waveform
single tone
multi-tone
complex multi-tone
formula
