Yamaha FX900 - Manual (Page 37)

PMD (Pitch Modulation Depth: -100 — +100)
Sets the depth of pitch modulation (vibrato) produced.
AMD (Amplitude Modulation Depth: -100 —+100)
Sets the depth of amplitude modulation (tremolo) produced.
PH fLeft/Rlaht Channel Phase: NOR. INV)
Sets the phase of the left and right-channel LFO signals to
normal (NOR: both channels have the same phase), or
Inverse (INV: channels out of phase). If the "INV" setting is
selected and fairly deep amplitude modulation is applied via
the AMD parameter, an auto-pan effect is produced.
WID (Width: 0-10)
Determines the strength of a feeling of "width" between the
left and right channels. The lower the value, the more the left-
and right-channel sound is mixed, reducing the feeling of
stereo width.
MIX (Mixing Balance: 0 —100%)
Sets the balance between the direct and effect sound. Higher
values produce a greater proportion of effect sound in
relation to direct sound.
LVL (Output Level: -30 — +6dB)
Determines the output level of the MD1 effect.
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