DSP

Audio FFT problem - PLEASE HELP
Could some DSP guru please help me a bit ? I am creating a FFT based application that uses an audio input. The sampling details are as follows: encoding : PCM sampling frequency : 16000 Hz resolution : 16 bits channel : mono signed : true endianness : little (as this runs on an Intel processor) The raw bytes... 21 Apr 2008 23:44

Normalization in cross-correlation (image processing)
Hi, In connection with pattern identification in images, cross-correlation between the image and a template matrix is often used. Is there any reason why the means are substracted from the elements before the multiplying them? If the only purpose is to detect similarity, the scaling seems unessecery. Thanks... 21 Apr 2008 13:19

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