Chapter 10: Composing With Midi; Midi Sequencing Basics - Adobe AUDITION 3 User Manual

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Chapter 10: Composing with MIDI

MIDI sequencing basics

Understanding MIDI data and VST instruments
Digital audio and MIDI are fundamentally different: Digital audio represents a sound wave; MIDI provides instruc-
tions for musical instruments. Like a tape recorder, a digital audio file tries to exactly reflect an audio event, whether
it's a musical performance, a person talking, or any other sound. MIDI instructions, on the other hand, are like sheet
music that lets digital instruments re-create a composition.
MIDI data includes information such as musical note, rhythm, and volume. When a MIDI file is played, this infor-
mation is sent to a software or hardware instrument, which re-creates the notes.
Third-party VST instruments (VSTi's) provide hundreds of software-based synthesizers, samplers, drum machines,
and more—without the expense and inconvenience of traditional hardware instruments. In the integrated mixing
environment of Multitrack View, the MIDI tracks that host VSTi's behave much like audio tracks. You can apply
effects and equalization, adjust volume and pan, and route the signal to sends and buses. Unlike audio tracks,
however, you can also change the underlying musical data at any time.
Overview of the Sequencer
In the Main panel and Mixer, MIDI tracks contain a powerful sequencer that lets you manipulate MIDI data and
interact with virtual and hardware instruments. Though each MIDI track contains its own sequencer, all synchronize
to the same session properties. (See "Set tempo, time signature, and key for a session" on page 223.)
In the Sequencer, you'll find several unique options for recording and editing MIDI data on individual instrument
tracks. Other options, such as Mute, Solo, Volume, and Pan, function like the similar options in Multitrack View.
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The Sequencer
A. Track controls B. Note grid C. Editing tools D. MIDI activity lights and Panic button