278625 Band Low High Pass Filter

Hi All, I need standalone C source code to perform a high pass and low pass and band pass filter pcm or wave files. as in #define PCM_FILE1 "d:\\project\\data\\pcm\\[login to view URL]" #define PCM_FILE2 "d:\\project\\data\\pcm\\[login to view URL]" The specifications are from amplitude of 0dB, Length of 64. The cutoff for low pass is 350kHz. for high pass the minimum pass through frequency is 300Hz. For bandpass, it is between 300Hz to 3500Hz. I need to be guided through the whole process of setting up the program. (The project used to be done by Nicov completed as a standalone C file with two void functions)This project is urgent and to be done as soon as possible. 1 day is best.