x = auread('hw1data.au');
If you cannot download hw1data.au, try hw1data.dat and read the file into Matlab as follows:
load hw1data.dat -ascii
The sampling rate for this signal is 8192 samples per second. Analyze this signal with the FFT. Which frequency (in hertz) appears to be dominant? Do harmonics appear to be present? What do you think produced this sound? Submit your answer on Wednesday, January 29.
NEW: For a shorter file that will run with the student version of Matlab, try hw1short.dat and read the file into Matlab as follows:
load hw1short.dat -ascii
The sampling rate for this file is 10 samples per second. What frequency components are dominant?