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I've used the EZ Kit Lite 2181 to record an audio sample (rec_16.dsp), and then search for audio tones within the sample (dit_main.dsp). This works somewhat well, and I've verified the results. But, I need more resolution, and... I'm trying to find a way to change the FFT routines to process only a limited frequency range of tones input to the EZ-Kit Lite. Several tones appear in the range of about 9,000 to 11,000 Hz. I'm not interested in anything outside that range, but the EZ-Kit FFTs seem to process starting at 0 Hz. I would like to make a short FFT, 64 or 128 points, but only process 9 KHz to 11 KHz. Thanks for your help!!! |
Limited Frequency FFT - EZ Kit Lite 2181
Started by ●October 5, 2001
