Yamaha MO6, Owner'S Manual

Page: 134 / 240

Internal Structure (System Overview)
134 Owner’s Manual
Basic Structure
●
Amplitude
This unit controls the output level (amplitude) of the sound
output from the Filter block. The signals are then sent at this
level to the Effect block. Also, by setting the AEG (Amplitude
Envelope Generator), you can control how the volume
changes over time.
AEG (Amplitude Envelope Generator)
Using the AEG, you can control the transition in volume from
the moment the sound starts is to the moment the sound
stops. You can create the AEG by setting parameters as
illustrated below. When you press a note on the keyboard, the
volume will change according to these envelope settings.
Furthermore, different AEG parameters can be set for each
Element or each Key.
●
LFO (Low Frequency Oscillator)
As its name suggests, the LFO produces a wave of a low
frequency.
These waves can be used to vary the pitch, filter or amplitude
of each Element to create effects such as vibrato, wah and
tremolo. LFO can be set independently for each Element; it
can also be set globally for all Elements.
Single Timbre Tone Generator (Voice/
Performance mode) and Multi-timbral
Tone Generator (Song/Pattern mode)
The internal tone generator block operates in two different
ways (Single timbre and Multi-timbral) depending on the
selected mode. The difference between the two is whether or
not they can handle multiple MIDI channels at the same time.
●
Single Timbre Tone Generator (Voice/Performance
mode)
A MIDI tone generator that receives over a single MIDI
channel and plays a single instrument part is referred to as a
“single timbre” tone generator. This is the operating status of
the internal tone generator in the Voice and Performance
modes.
n
To set the MIDI receive channel for single timbre operation (Voice
and Performance modes), use the following operation in the Utility
mode. [UTILITY]
→
[F5] MIDI
→
[SF1] CH
→
BasicRcvCh
●
Multi-timbral Tone Generator (Song/Pattern mode)
A MIDI tone generator that simultaneously receives over
multiple MIDI channels and plays multiple instrument parts is
referred to as a “multi-timbral” tone generator. This allows
playback of multi-channel MIDI song data—such as on a MIDI
sequencer or computer—with each internal part being
assigned to and played by a different track or channel. This is
the operating status of the internal tone generator in the Song
and Pattern modes.
n
To set the MIDI receive channel for multi-timbral operation (Song
and Pattern modes), use the following operation in the Utility mode.
[SONG] or [PATTERN]
→
[MIXING]
→
[EDIT]
→
Part selection
→
[F1] VOICE
→
[SF2] MODE
→
ReceiveCh
n
When using an external MIDI sequencer or computer to play this
instrument, make sure to use the Song mode or Pattern mode.
[VOICE]
➞
Voice selection
➞
[EDIT]
➞
Element selection/
Drum Key selection
➞
[F4] AMP
[VOICE]
➞
Voice selection
➞
[EDIT]
➞
Element selection/
Drum Key selection
➞
[F5] LFO
[VOICE]
➞
Voice selection
➞
[EDIT]
➞
[COMMON]
➞
[F5]
LFO
0
Level (Volume)
Initial
Level
Attack
Level
Decay1
Level
Sustain Level
(Decay2 Level)
Time
Attack
Time
Decay1
Time
Decay2
Time
Release
Level
Release
Time
Pressing the key (Key on) Releasing the key (Key off)
Maximum Polyphony
Maximum polyphony refers to the highest number of
notes that can be sounded simultaneously from the
internal tone generator of the instrument.
The maximum polyphony of this synthesizer is 64. When
the internal tone generator block receives a number of
notes exceeding the maximum polyphony, previously
played notes are cut off. Keep in mind this may be
especially noticeable with Voices not having decay.
Furthermore, the maximum polyphony applies to the
number of voice elements used, not the number of
voices. When the normal voices that include up to four
elements are used, the maximum number of
simultaneous notes may be less than 64.