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Tracks

Tracks are at the heart of a DAW. Tracks are made up of regions, which can either be recorded digital audio or MIDI data. Tracks are shown in your DAWs arrange view. It's easy to look at collection of tracks like the score for a piece of music. Each instrument takes a strip of horizontal space on the page. You stack multiple instruments on top of one another to create a score. In a DAW, each track takes up its own horizontal strip, with regions populating each track. You can stack multiple tracks and they play from left to right, moving past a point on the page, similar to a tape moving past a playhead on an analog tape machine. Figure 12-1 shows an arrange page with several tracks. Let's look more closely at the two types of tracks.

Figure 12-1: Multiple tracks in Pro Tools

Audio Tracks

An audio track is probably the most common track in a DAW. Depending on your DAW, you can record mono tracks (from a single source) or stereo tracks for two sources (usually left and right). Some DAWs tag their audio tracks with a different color from other types of tracks to make it easy to see what's going on. You'll record regions on an audio track. How can you tell what's an audio region? Figure 12-2 shows a waveform, which is a graphical representation of an audio signal.

Figure 12-2: An audio waveform

The waveform in Figure 12-2 is unique in that it shows the overview of the digital audio. You can't see what pitch is being played in this view, but the vertical height (or amplitude) will tell you how loud the signal is at any given point. Audio regions, represented by waveforms, live on audio tracks—simple as that!

MIDI Tracks

MIDI tracks are used to record and edit MIDI data. MIDI regions look different than audio regions do. The distinctive waveform view is missing in a MIDI region as MIDI is simple data telling each note when you stop and start. If you've ever seen a player piano's roll, MIDI will make a lot of sense to you. Figure 12-3 shows a MIDI region.

Figure 12-3: A MIDI region

The distinctive dots and small bars tell you it's a MIDI region, not an audio region. MIDI tracks can interface with hardware keyboards and samplers, triggering external instruments to make sound. MIDI regions can also trigger virtual instruments, something that you'll read more about in Chapter 13.

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