We've got signal, but what the heck is it?
That's your mission. Analyze this bébé.
download the audio file 12.wav.gz
hints :
- No need to gunzip this file since baudline can automatically uncompress
files.
-
Setup baudline to be a Web Browser helper application as described in the
FAQ.
- Ignore the constant 60 Hz tone.
- In the play deck, turn on the 60 Hz notch filter and set the digital gain
boost to +18dB.
-
Try playing the mystery signal at a slower speed such as 0.25X or shift it down
about -12000 Hz.
-
Use the
fundamental Hz
measurement window with the fundamental rule of "max in Hz range" to find the
exact frequency of the steady state tone (to within 1 Hz). A larger FFT
will give you even more accuracy. Type this numeric value and the units
"Hz" into a search engine.
What is it?
Click here for the answer.
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