通用双精度混合基FFT运算的汇编程序

THE GENERAL PURPOSE OF DOUBLE-PRECISION & MIXED-RADIX FFT WRITTEN IN MASM

本文介绍了一种利用４８６以上微机对音频范围的实时信号数据直接进行ＦＦＴ运算的有效方法，并给出了完整的汇编语言源程序和具体应用的详细说明。由此不仅可获较高的运算速度，而且可以大幅度提高其变换精度。该方法亦具有简单、灵活和方便的特点，可以基本满足一般情况下对ＦＦＴ的使用要求，因而实用性较强。

This paper describes effective way of designing the real-time FFT implemented in MASM language on PC. The difficult points are explained in every detail. It also offers the complete program which makes a considerable speed and precision advantage by many times over the program written in high-level languages, and the way of how to use it is given in minute description as well.