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Update fm-opl.md

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brickblock369 2024-03-24 15:16:48 +09:00 committed by tildearrow
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doc/4-instrument/fm-opl.md
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@ -40,7 +40,7 @@ these apply to each operator:
![FM ADSR chart](FM-ADSRchart.png) ![FM ADSR chart](FM-ADSRchart.png)
- **Key Scale Rate (KSR)**: also known as "Rate Scale". determines the degree to which the envelope execution speed increases according to the pitch. - **Key Scale Rate (KSR)**: also known as "Rate Scale". determines the degree to which the envelope execution speed increases according to the pitch.
- **Frequency Multiplier (MULT)**: sets the coarse pitch offset in relation to the note (0 to 15). 0 is -1 octave, 1 is 0 octaves, 2 is 1 octave, 3 is 1 octave 7 semitones, and so on. - **Frequency Multiplier (MULT)**: sets the coarse pitch offset in relation to the note (0 to 15). The values follow the harmonic scale. For example, 0 is -1 octave, 1 is 0 octaves, 2 is 1 octave, 3 is 1 octave 7 semitones, and so on.
- note that values 11, 13 and 14 behave as 10, 12 and 12 respectively. - note that values 11, 13 and 14 behave as 10, 12 and 12 respectively.
- **Waveform Select (WS)**: changes the waveform of the operator (OPL2 and OPL3 only, 0-3 range on OPL2 and 0-7 on OPL3). - **Waveform Select (WS)**: changes the waveform of the operator (OPL2 and OPL3 only, 0-3 range on OPL2 and 0-7 on OPL3).
- **Vibrato (VIB)**: makes the operator affected by LFO vibrato. - **Vibrato (VIB)**: makes the operator affected by LFO vibrato.