FM Synthesis Format and Commands
B-6
FaderInc allows a gradual transition to the new volume. It is a signed two-
byte value that specifies the incremental amount to change the volume
during each interval.
For example:
BYTE
FADER,f100p
;Set volume to 100
DATA
NOFADER
;Change is abrupt
B.2.8 Modulation Index Adjustment
It is frequently desirable to incrementally change the texture of the sound quali-
ty in the song. This can be done by changing the modulation index to get a
more or less brighter tonal quality. This can be done by using the following
commands:
BYTE
MIX1
;Set the modulation index scale to 1
BYTE
MIX2
; Set the modulation index scale to 2
BYTE
MIX3
; Set the modulation index scale to 3
BYTE
MIX4
; Set the modulation index scale to 4
BYTE
MIX5
; Set the modulation index scale to 5
BYTE
MIX6
; Set the modulation index scale to 6
BYTE
MIX7
; Set the modulation index scale to 7
BYTE
MIX8
; Set the modulation index scale to 8
BYTE
MIXUP
; Increment the modulation index scale
BYTE
MIXDN
;Decrement the modulation index scale
B.2.9 End of Song
The STOPSONG is used to signal the end of the song.
BYTE
STOPSONG
;Signal the end of song
Содержание MSP53C391
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