Roland MC-909 - Manual (Page 17)

17
An Overview of the
MC-909
An Overview of the MC-909
Basic structure of the MC-
909
This section provides an overview of the sequencer section, sound
generator section, controller section, and sampler section, which
make up the main parts of the MC-909.
fig.0-03.e
The sound generator section
This is the section that actually generates the sound. It produces
sounds in response to data received from the MC-909’s Controller or
Sequencer sections. You can also play the sound generator by
sending it performance data from an external MIDI device.
Since the sound generator section of the MC-909 is able to play up to
64 notes simultaneously, it can easily handle multiple parts.
Song
Two or more patterns connected in the order of playback are
called a song.
In one song, you can register up to 50 patterns in the desired
order of playback.
Pattern
A pattern is 1–998 measures of performance data consisting of
sounds (patches or rhythm sets) for up to 16 parts.
The MC-909 provides 215 different preset patterns.
Part
A part corresponds to a single musician in a band or orchestra.
Since the MC-909 has sixteen parts, you can use sixteen
different patches or rhythm sets to play as many as sixteen
performances simultaneously.
Patch
A patch corresponds to a single instrument such as a piano or
guitar. A patch consists of up to four “tones.” The MC-909
provides 800 different patches, and you can enjoy an enormous
variety of sounds simply by choosing from these patches.
Rhythm set
A rhythm set assigns a separate instrumental sound to each
note of the keyboard. These instrumental sounds are not played
as a scale. The MC-909 provides 64 preset rhythm sets.
(Example)
fig.0-04
Tones
Tones are the raw materials of sound that are combined to
create a patch. The MC-909 provides 693 different waveforms,
and two waveforms can be assigned to each tone. (Waveforms
can be assigned in stereo; one for L and one for R.)
You can install separately sold wave expansion boards (SRX
series) to add more waveforms, and sounds that you sample
can also be used as waveforms.
Effects
Effects let you apply a variety of special effects to patches or
rhythm sets. You can use four effects simultaneously:
compressor (an effect that makes the sound more consistent),
reverb (which adds reverberation), and two multi-effects (each
selectable from 47 types such as equalizer, overdrive, and
delay).
The sequencer section
A sequencer is a device that records musical performance data, and
can play back the performance data that was recorded.
The MC-909 is a sequencer that plays back patterns and adds
changes to the playback method. This type of sequencer is referred
to as a
pattern sequencer .
Recording/playing a performance
The MC-909 comes with 215 previously prepared patterns
(
preset patterns ). These preset patterns can be played back
easily.
You can also create your own original patterns, either by
modifying preset patterns or by creating a pattern from scratch.
Simultaneous playback of multiple parts
The MC-909 is able to play multiple sounds (patches)
simultaneously. For example, with the following part
configuration, you can simultaneously play drums, bass, piano
and guitar; and the resulting performance will sound like a
band.
Sequencer
Section
Recording
PLAY
Velocity Pad Play
Sound Generator
Section
Controller (Velocity Pad, Knob, etc.)
Sampling
Sampler
Section
Part 1 Guitar
Part 2 Bass
Part 3 Piano
Part 10 Rhythm (Drum) Set
KICK
SNARE
TOM CYMBAL RIM
HI-HAT CLAP
B3
MC-909_Ref_e.book 17 ページ ２００５年３月１日 火曜日 午後３時２９分