Elenco PK101 w/ Computer Interface - Manual (Page 16)

Now change to FFT mode to look at the frequency spectrum as the sound fades away. Try the settings
shown here.
The spectrum at left is for just
after pressing the switch. The
spectrum below uses the same
settings and shows the spectrum
just before the sound stops. The
frequencies and amplitude slowly
get lower as the sound fades away.
-16-
+9V
S
P
33k Ω
473
10 µµ F
470 Ω +
-
Project PC4
OBJECTIVE: To look at the output of a space gun circuit.
Space Gun PC
SPEAKER