Yamaha PSR-S670 Reference Manual page 14

 CONTROLLER Page
MODULATION
The [MODULATION] wheel can be used to modulate the parameters below as well as the pitch (vibrato).
Here, you can set the degree to which the [MODULATION] wheel modulates each of the following
parameters.
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 SOUND Page
1 FILTER/EG
• FILTER
Filter is a processor that changes the timbre or tone of a sound by either blocking or passing a specific
frequency range. The parameters below determine the overall timbre of the sound by boosting or cutting a
certain frequency range. In addition to making the sound either brighter or mellower, Filter can be used to
produce electronic, synthesizer-like effects.
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• EG
The EG (Envelope Generator) settings determine how the level of the
sound changes in time. This lets you reproduce many sound
characteristics of natural acoustic instruments—such as the quick
attack and decay of percussion sounds, or the long release of a
sustained piano tone.
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14
PSR-S670 Reference Manual
FILTER Determines the degree to which the [MODULATION] wheel modulates
the Filter Cutoff Frequency. For details about the filter, see below.
AMPLITUDE Determines the degree to which the [MODULATION] wheel modulates
the amplitude (volume).
LFO PMOD Determines the degree to which the [MODULATION] wheel modulates
the pitch, or the vibrato effect.
LFO FMOD Determines the degree to which the [MODULATION] wheel modulates
the Filter modulation, or the wah effect.
LFO AMOD Determines the degree to which the [MODULATION] wheel modulates
the amplitude, or the tremolo effect.
BRIGHT. Determines the cutoff frequency or
(Brightness) effective frequency range of the fil-
ter (see diagram). Higher values
result in a brighter sound.
HARMO. Determines the emphasis given to
(Harmonic Con- the cutoff frequency (resonance),
tent) set in BRIGHT. above (see dia-
gram). Higher values result in a
more pronounced effect.
ATTACK Determines how quickly the sound reaches its maximum level after the
key is played. The lower the value, the quicker the attack.
DECAY Determines how quickly the sound reaches its sustain level (a slightly
lower level than maximum). The lower the value, the quicker the decay.
RELES. Determines how quickly the sound decays to silence after the key is
(Release) released. The lower the value, the quicker the decay.
Volume
Cutoff Frequency
These frequencies are Cutoff
"passed" by the filter. range
Volume
Resonance
Frequency (pitch)
Level
ATTACK DECAY RELEASE
Key on Key off
Frequency
(pitch)
Sustain
Level
Time