78 lines
4 KiB
Markdown
78 lines
4 KiB
Markdown
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# ESFM instrument editor
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the ESFM editor is divided into 6 tabs:
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- **FM**: for controlling the basic parameters of FM sound source.
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- **Macros (OP1)**: for macros controlling FM parameters of operator 1.
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- **Macros (OP2)**: for macros controlling FM parameters of operator 2.
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- **Macros (OP3)**: for macros controlling FM parameters of operator 3.
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- **Macros (OP4)**: for macros controlling FM parameters of operator 4.
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- **Macros**: for other macros (volume/arp/pitch/pan/noise mode).
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## FM
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ESFM is four-operator, but it is different from the rest of FM chips.
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the concept of an algorithm does not exist in ESFM. instead, modulation routing is arbitrary, with each operator having output level and modulation input parameters.
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these apply to the instrument as a whole:
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- **OP4 Noise Mode**: determines the mode used to produce noise in operator 4.
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- Normal: noise is disabled.
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- Snare: takes the snare noise generation mode from OPL. square + noise.
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- HiHat: ring modulates with operator 3 and adds noise.
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- Top: ring modulates with operator 3 and double pitch modulation input.
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- this mode is not emulated correctly. subject to change!
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these apply to each operator:
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- the crossed-arrows button can be dragged to rearrange operators.
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- **Amplitude Modulation (AM)**: makes the operator affected by LFO tremolo.
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- **Sustain flag (SUS)**: when enabled, value of Sustain Level is in effect.
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- **AM Depth (AMD)**: when enabled, LFO tremolo is deeper.
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- **Attack Rate (AR)**: determines the rising time for the sound. the bigger the value, the faster the attack (0 to 15).
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- **Decay Rate (DR)**: determines the diminishing time for the sound. the higher the value, the shorter the decay. it's the initial amplitude decay rate (0 to 15).
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- **Sustain Level (SL)**: determines the point at which the sound ceases to decay and changes to a sound having a constant level. the sustain level is expressed as a fraction of the maximum level (0 to 15).
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- **Release Rate (RR)**: determines the rate at which the sound disappears after note off. the higher the value, the shorter the release (0 to 15).
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- **Total Level (TL)**: represents the envelope’s highest amplitude, with 0 being the largest and 63 (decimal) the smallest. a change of one unit is about 0.75 dB.
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- **Output Level (OL)**: determines the volume at which the operator will be output.
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- **Modulation Input (MI)**: determines how much to take from the previous operator for modulation.
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- this controls feedback level in the case of operator 1.
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- **Key Scale Level (KSL)**: also known as "Level Scale". determines the degree to which the amplitude decreases according to the pitch.
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- **Key Scale Rate (KSR)**: also known as "Rate Scale". determines the degree to which the envelope execution speed increases according to the pitch.
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- **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.
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- note that values 11, 13 and 14 behave as 10, 12 and 12 respectively.
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- **Waveform Select (WS)**: changes the waveform of the operator (0 to 7).
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- **Vibrato (VIB)**: makes the operator affected by LFO vibrato.
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- **FM Depth (FMD)**: when enabled, vibrato is deeper.
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- **Tune**: sets the coarse tune of the operator.
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- **Detune**: sets the fine tune of the operator.
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- **Left (L)**: output on the left channel.
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- **Right (R)**: output on the right channel.
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### fixed frequency mode
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each operator has a Fixed Frequency mode. once enabled, the operator runs at the specified frequency regardless of the note.
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## macros
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these macros allow you to control several parameters of FM per tick.
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## OP1-OP4 Macros
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all parameters are listed above.
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## Macros
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- **Volume**: volume sequence.
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- **Arpeggio**: pitch sequence.
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- **OP4 Noise Mode**: noise mode sequence.
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- **Panning**: enables output on left/right channels.
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- **Pitch**: fine pitch.
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- **Relative**: when enabled, pitch changes are relative to the current pitch.
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- **Phase Reset**: restarts all operators and resets the waveform to its start.
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