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Tone Generator Block
MOTIF-RACK XS Owner’s Manual
52
Basic Structure
Reference
Voice
Multi Utility
The Controls &
Connectors
Setting Up
Listening to
the Sound
Connections
Using a Computer
Quick Guide
Appendix
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. Amplitude related parameters (pages 78, 81, 85 and
86) can be set on the MOTIF-RACK XS Editor.
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.
Among the LFO related parameters, the Common Edit
parameters can be set in the Common LFO display (page 69)
and the Element Edit parameters (page 81) can be set on the
MOTIF-RACK XS Editor.
Normal Voice
• Preset Banks 1 – 8: 1024 Normal Voices (128 Voices for each
Bank)
• GM Bank: 128 Voices
• User Banks 1 – 3: 384 Normal Voices (128 Voices for each
Bank)
(selected from Preset Voices by default)
Drum Voice
• Preset Drum Bank: 64 Voices
• GM Drum Bank: 1 Voice
• User Drum Bank: 32 Voices
(selected from Preset Voices by default)
Tone Generator block in the
Multi mode
In this mode, multiple Parts are provided and different Voices
and different melodies or phrases can be played back for each
Part. This status is referred to as a “multi timbral” tone generator.
Because this mode lets you set the MIDI channel for each part
of the tone generator block, you can use an external MIDI
sequencer to play the sounds. The sequence data of each track
on the external MIDI sequencer plays the corresponding Parts
(those having the same MIDI channel assignment) in the tone
generator block.
To play the tone generator in the Multi mode, set the MIDI Port to
1 on the external MIDI sequencer or computer then set a MIDI
Receive channel (page 94) for each of 16 Parts in the Voice
display of the Multi Part Edit, according to the MIDI transmit
channel for each track of the external MIDI sequencer or
computer.
A program in which multiple Voices are assigned to Parts for
multi-timbral play is referred to as a “Multi” on the MOTIF-RACK
XS or “Mixing” on certain Yamaha synthesizers. Each Multi
program can contain up to 16 parts and can be created by
editing parameters unique to each Part and parameters
common to all the Parts in the Multi mode.
128 Multi programs are programmed in the User Bank.
Memory structure of Voice
Part structure in the Multi mode
Multi
Memory structure of Multi
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 tone generator
is 128. 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 Normal Voices that include up to eight
Elements are used, the maximum number of simultaneous notes
may be less than 128.