基于MATLAB的FFT算法实现(论文)(2)

THE FFT ALGORITHM BASED ON MATLAB

ABSTRACT

MATLAB software is very popular around the world have a strong scientific computing and graphic interface of the software system. Using the powerful operation function of MATLAB, can solve many problems encountered in the process of digital signal processing. In this paper, based on DFT MATLAB software to realize signal transform and FFT spectrum analysis method. Using MATLAB software method, makes the design of convenient, quick, greatly reduce the workload. And the signal DFr transform can be clearly seen in the DFT transform results and clipping of the relationship between the length. Sequences can be obtained by programming the simulation of the amplitude frequency characteristic curve, facilitate the signal spectrum analysis. FFT (Fast Fourier changed), which is Fast Fourier transform, is a Fast algorithm of discrete Fourier transform, it is according to the odd and even of discrete Fourier transform, virtual and real features, the discrete Fourier transform algorithm was improved. It the theory of Fourier transform and found nothing new, but the application in computer systems or digital system discrete Fourier transform, can be said to be into a big step.

In practical applications, the FFT is the most common form of digital signal processing algorithm, it is play an important role in all kinds of digital signal processing system. In the process of signal processing. Frequency domain analysis than time-domain analysis is convenient and efficient, FFT is the basic operation of the time domain and frequency domain transformation.

Key words: FFT algorithm; MATLAB; Digital signal processing; Spectrum analysis

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说教育文库基于MATLAB的FFT算法实现(论文)(2)在线全文阅读。