The number of tracks in a multi-track digital recorder that can eventually occupy its internal hardware circuit channels for playback is limited, which we call a real track (physical track). The tracks that are only used to store sound and cannot be played are called virtual tracks. Just like using sequence software, you can record dozens of tracks, but only the smaller part of the sound can be sounded through the limited parts of the external sound source. These sounds are the real tracks. The rest can be called virtual tracks.
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