22000 signal

Maken of Sound file; mp3

Theme: Detecting FM-shift phenomena on acostic from 100 Hz to 200 Hz, utilizeing the phenomena to make the DAFsound.

Purpass: If 1000 Hz a sound shifted 22000 Hz the sound, I will not hear the sound.

To making
+-sin 22000 Hz and +-sin 11000 Hz sound putting doen
and 1000 Hz putting down
Thus, I get the 2000 Hz sound.
Therefore I put down from 2000 Hz to the 22000 Hz.


Result: good: FM-shift phenomena detecting 6 peaks. so sampling freqency 20 Hz, I will.
Super-heterodine and Phone-number transit system, I thought.

good: DAFsound, I did.

too bad: I forget the making a DAFsound very much.