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Glossary of Terms
Digital Echo- Digital echo is a synthetically processed sound effect that mimics natural echo. Echo in general is
the "bouncing" of waves back and forth between 2 surfaces. This effect gives a spacious or ambient feeling that
works great with vocals.
Repeat- Repeat is facet of the echo process. Repeat refers to the frequency of echoes within a period of time.
Delay- Delay is also a facet of the echo process. Delay refers to the amount of time that exists between echoes.
Vocal Cancel- Vocal Cancel is a feature that removes vocals from multiplex CD tracks. To be multiplexed, a disc
must have the vocals coded to the right channel and the music coded to the left channel. When you select Vocal
Cancel, the unit will remove the right channel (vocals) and split the left channel (music) to both sides.
Vocal Partner- Vocal Partner is a feature that removes vocals from multiplex CD tracks much in the same way as
Vocal Cancel, but with an added "auto-pilot" function. The main difference is that Vocal Partner will only remove
vocals as long as there is activity going through the microphone (singing). When you stop singing, the vocals
automatically return.
Vocal Reducer – Vocal Reducer is a feature that removes vocals from standard non-multiplex CD tracks. To do
this, the unit compares the audio on the left and right channels, and cancels out any signals that appear on both.
Most currently recorded CD’s contain the vocal layer on both sides, however some may not, leading to varying
results.
CD+G- A CD+G is a specially formatted disc that has an additional line of sub-code on the CD that is responsible
for the lyrics that play on video screen for Karaoke systems. CD+G stands for Compact Disc + Graphics.
Sub-Code – Sub-code is specially coded area of data used by CD+G manufacturers to produce lyrics for
Karaoke video output.
Multiplex (MPX)- Multiplex is a type of Karaoke software that has specially formatted left and right channels to
make multiplex features available. To be formatted for multiplex use, a disc must have the vocals coded to the
right channel and the music to the left channel. When you select a multiplex mode, the unit will remove the right
channel (vocals) and split the left channel (music) to both sides.
Rack Mountable- Rack Mountable refers to the ability to place unit into professional or travel rack cases. Such
cases are great for building complete systems and protect them during transportation. The standard rack size for
MOST cases is 19".
VCD- VCD is a disc formatted in MPEG-1. These discs are good candidates for Karaoke use as they have an
audio and a video layer to them. VCD stands for Video Compact Disc.
A/V- A/V is an abbreviation for Audio/Visual.
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