Description: The problem is the high cut filter or low pass filter, if the use of hardware, the fastest, but now the computer speed so fast, hardware problems are relatively high cost and poor flexibility,
Software is relatively easy to achieve more concrete steps are as follows body (frequency domain)
Is the first of the data for FFT, then the transformed frequency domain data multiplied by the filter factor, choose the ideal filter factor of the high-pass, Butterworth high-pass, index of high-pass, high pass ladder, generally choose high-pass ladder filter factor the specific reason you can book on digital signal processing found, then the data further inverse FFT is it, there is in the spatial domain for filtering, there is a filtering process with the same program, you can refer to , (the low-cut parameters set to zero is your high-cut filter)
To Search:
File list (Check if you may need any files):
highpassfilter.doc
Download