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[SCMarmok01167658

Description: 最近用Mega128写了一个128点FFT程序,浮点运算,加汉宁窗。由于窗函数和旋转因子通过查表得到,所以速度还可以,程序中给的初值是通过高速AD采集的20KHz正弦信号。计算结果与Matlab的FFT函数得到的结果相同。 -Mega128 recently wrote a 128-point FFT procedures, floating-point operations, Hanning window. Since the window function and the twiddle factor look-up table has been adopted, so the speed can also be, the initial value to the process through high-speed AD collected 20KHz sinusoidal signal. The calculation results with the Matlab
Platform: | Size: 20480 | Author: dfsdf | Hits:

[Documentsex6-1

Description: The Zoom-FFT is a process where an input signal is mixed down to baseband and then decimated, prior to passing it into a standard FFT. The advantage is for example that if you have a sample rate of 10 MHz and require at least 10Hz resolution over a small frequency band (say 1 KHz) then you do not need a 1 Mega point FFT, just decimate by a factor of 4096 and use a 256 point FFT which is obviously quicker.
Platform: | Size: 5120 | Author: 张鹏程 | Hits:

[Software Engineeringmnl_avalon_spec

Description: Avalon-ST manual for FFT mega IP-core altera.-Avalon-ST manual for FFT mega IP-core altera.
Platform: | Size: 993280 | Author: Jaydeep Parmar | Hits:

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