## Explanation of files

filtriraj.py - implementation of an IIR/FIR digital filter for mono or stereo audio signals

sol_poper.py - implementation of median filter for RGB images to reduce salt-and-pepper noise 

ftanaliza.py - estimate the sampling frequency from a mono signal and a known dominant frequency in the signal

histogram.py - implementation of histogram calculation for images, both for RGB color images and grayscale images

konvolucija_time.py - implementation of discrete convolution in the time domain for both mono and stereo signals

konvolucija_freq.py - implementation of discrete convolution in the frequency domain for both mono and stereo signals

dtmfanaliza.py - implementation of DTMF signal analyzer that extracts the pressed keys from a recorded telephone keypad audio signal

osnove.py - simple generation, normalization, and reading of audio signals

generiraj.py - generates a mono sine wave tone signal 

barvne_transformacije.py - implementation of conversions between RGB, HSV, and YCbCr color spaces pixel-by-pixel

decimiraj.py - implementation of mage idownsampling (decimation) with optional pre-filtering 

butterworth - applying a bandpass Butterworth filter to a WAV file (with some example files)

dirac_impuls - convolution via FFT with some input and output files

project_description - description of group project (slovenian)