stochastic
Today we did experiment on stochastic. It is quiet new for me since I never learn about it before. It deals with probability in random area. I didn`t understand completely about the experiment but I've got some idea of autocorrelation. Autocorrelation is simply convolution of two same signals (one of them is shifted) over its period. Autocorellation of sine signals will output cosine signal and autocorrelation of rectangle signals will result triangular signal.One implementation we did is to find velocity (in rpm) of the machine with help of noise sound from machine that was recorded on casette. The signals are autocorrelated, and the output will have the same periode of the signal itself. With the period finally we can calculate the velocity of the machine.
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