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Adding "Octave" to FM instrument docs.

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Electric Keet 2025-03-10 11:10:24 -07:00 committed by tildearrow
parent 7d483e1bbb
commit 86db421149
4 changed files with 8 additions and 2 deletions
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1
doc/4-instrument/fm-esfm.md
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@ -24,6 +24,7 @@ these apply to the instrument as a whole:
- these are normally used for the drum channels in ESFM's OPL3 compatibility mode.
- however, in ESFM, operator 4 can be modulated by operator 3, whereas in OPL3 drum mode the rhythm channels cannot be modulated.
- __note__: usage of noise mode "Top" is discouraged for now as it is not properly emulated yet, and results may change when the emulation gets fixed in the future.
- **Octave**: sets the "block" of the frequency register, which affects note range and precision.
- **operator routing preview**: shows how operators are connected with each other and with the audio output (at the bottom).
- left-click pops up a small "operators changes with volume?" dialog where each operator can be toggled to scale with volume level.
- right-click switches to a preview display of the waveform generated on a new note:

1
doc/4-instrument/fm-opl.md
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@ -23,6 +23,7 @@ these apply to the instrument as a whole:
- right-click returns to algorithm view.
- **Feedback (FB)**: determines how many times operator 1 returns its output to itself (0 to 7).
- **Octave**: sets the "block" of the frequency register, which affects note range and precision.
- **4-op**: enables 4-operator FM instrument editor mode (only on OPL3).
- **Drums**: enables OPL drum mode editor.

6
doc/4-instrument/fm-opll.md
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@ -18,8 +18,10 @@ but don't worry! there also are 15 preset patches that you may select at any tim
these apply to the instrument as a whole:
- **Feedback (FB)**: determines how many times operator 1 returns its output to itself (0 to 7).
- **Sustain (SUS)**: enables the sustain flag (sets the release rate to 5).
- **DC (half-sine carrier)**: sets the waveform produced by carrier operator to half-sine.
- **DM (half-sine modulator)**: sets the waveform produced by modulator operator to half-sine.
- **Octave**: sets the "block" of the frequency register, which affects note range and precision.
- **OP2 Half Sine (DC)**: sets the waveform produced by carrier operator to half-sine.
- **OP1 Half Sine (DM)**: sets the waveform produced by modulator operator to half-sine.
- **preset dropdown**: selects OPLL preset instrument.
- this is the selector for the preset patches I mentioned before.
- once a preset patch is selected, only the volume is configurable.

2
doc/4-instrument/fm-opn.md
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@ -28,6 +28,8 @@ these apply to the instrument as a whole:
- only applies to operators which have AM turned on.
- does not apply to YM2203.
- **Octave**: sets the "block" of the frequency register, which affects note range and precision.
these apply to each operator:
- the crossed-arrows button can be dragged to rearrange operators.
- the **OP1**, **OP2**, **OP3**, and **OP4** buttons enable or disable those operators.