System information
V
Video for Windows (AVI)
A file format for digital video.
Virtual MIDI Router (VMR)
A software-only router for MIDI data between programs. Vegas Pro software uses the VMR to receive MIDI
timecode and send MIDI clock. No MIDI hardware or cables are required for a VMR, so routing can only be
performed between programs running on the same PC. The Virtual MIDI Router is supplied with Vegas Pro.
Z
Zero-crossing
A zero-crossing is the point where a fluctuating signal crosses the zero-amplitude axis. By making edits at
zero-crossings with the same slope, the chance of creating glitches is minimized. The fade edit edges setting
is used to make zero crossing at event edges by fading the waveform to 0-amplitude over a short period of
time.
Zipper noise
Zipper noise occurs when you apply a changing gain to a signal, such as when fading out. If the gain does
not change in small enough increments, zipper noise can become very noticeable. Fades are accomplished
using 64-bit arithmetic, thereby creating no audible zipper noise.
GLOSSARY649