Commodore 128D - Tying Your Music Program Together

notes sound and how they sounded without the
filter. Change line 45 to:
45 FILTER 1200, 0,1, 0,10
The new line 45 turns off the low-pass filter and
enables the band-pass filter. Press RUN/STOP
and RESTORE and RUN your sound program
again. Notice the difference between the low-
pass and band-pass filters. Change line 45 again
to:
45 FILTER 1200, 0, 0,1,10
Reset the sound chip and RUN your example
program again. Notice the difference between
the high-pass filter and the low-pass and band
pass filters. Experiment with different cutoff
frequencies, resonance levels and filters to per
fect the music and sound in your own programs.
Tying Your Music Program Together
Your first musical program is complete. Now you can program your
favorite songs. Let's tie all the components together. Here's the pro
gram listing. Don't be alarmed, this is the same program you built in
this section except the print statements are added so you know
which program lines are being played.
151
USING C128 MODE—Sound and Music in C128 Mode