Example test signal. This 100-second audio file
consists of 30
seconds of a 1 kHz sine wave, 40 seconds of a 500 Hz sine wave, and 30
of a 2 kHz sine wave. Because the 500 Hz portion is the longest, the
summary should consist primarily of the 500 Hz signal as opposed to the
1 KHz and 2 KHz segments.
N.B.: These files contain nearly two minutes of highly
tones, and there's no compelling reason for anyone to actually listen
We provide them for completeness, and for anyone who might care to
results using this data.