©2003 Roland Corporation U.S. MC-909 Getting Started Guide Page 7
®ÂØÒňΠMC-909 Getting Started Guide
Rhythm Sets
A normal patch plays its samples or PCM
waveforms over a range of pads, or keys on a
connected MIDI keyboard. There’s a special kind of
drum or percussion patch called a “rhythm set” in
which every pad or key plays a different drum or
percussion sound.
Whatzan Effect?
A big factor in making the MC-909’s patches sound as great as they do is the MC-909’s “effects.”
An effect—technically speaking—is an audio process that changes the sound of a sample, PCM
waveform or an entire patch in some way. Non-technically speaking, an effect adds interesting new
personality traits to the basic sound of a patch.
Some of the more popular effects include:
• reverb—Reverb makes a patch sound like it exists in a real-world space, such as a concert hall,
or a room of some kind.
• compression—Compression takes control of volume changes to make a sound more punchy
and tight.
• step filter—A step filter makes the brightness of a sound change along with the beat as your
music plays.
Step Filter settings
The MC-909 contains a full-time reverb effect and a compressor, and also offers two all-purpose
“multi-effect”—or “MFX”—processors that can produce dozens and dozens of effects.
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