CGSC433 Study Guide - Spring 2019, Comprehensive Final Exam Notes - Acoustics, Waveform, Vocal Tract
29 Mar 2019
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How do we determine the minimum sampling rate necessary to reconstruct the original waveform without aliasing: sampling is how frequently we take measurements of the signal in time (number of sampling points per second). You must increase sampling rate and filter out high frequencies. It can be avoided by increasing the sampling rate and filtering out the high frequencies. What is the signal-to-noise ratio: 2^10=1024 always 2^# of bits, snr: 1024 (number of steps):1 (quantization noise has a small effect) How many samples are in a 25 ms window if the sampling rate is 16 khz: 16000/. 025 sec 400 samples. Homework 2: notice that when you round your lips, your lips protrude a little bit forward. Assume that this lip rounding adds 1 cm to the length of the vocal tract. Explain. (2 points: consider the spectrum shown below, which is of an english vowel. 4500 (a) draw the spectral envelope on the above graph.
