CLEAN / CLEAN PLUS – 37
Here’s what the individual effects do:
Vari Speed
This effect lets you change the tempo and the pitch of a track. Vari Speed
works in real time and re-samples the audio. You can pitch a track up or
down by up to two semitones. Its tempo will change accordingly. You can
therefore use this effect to correct false tempi or pitches caused by the dif-
fering basic playback speed of different cassette recorder models. DJs will
also find Vari Speed handy to adjust the tempo or the pitch of two record-
ings that they wish to play one after another.
Phase Correction
This is especially useful when you record tracks from old tapes. If the angle
between the tape head of your recorder and the tape (azimuth) is not cor-
rectly adjusted, the playback signal suffers. It is either strong on one channel
and weak on the other, doesn’t have sufficient treble or the treble seems to
come and go.
Try this effect to improve the material that you have. It does not perform mir-
acles but can help to improve the quality.
Expander
The Expander can be used to process material with a very small dynamic
range caused by excessive use of a compressor. By adding additional har-
monics to the sound, it generates a more dynamic impression – the sound
has more “punch”. In the process, quieter parts are left untouched but more
power is added to the louder portions, without causing clipping.
Multi Band Compressor
The Multi Band Compressor is levelling out peak levels. These are attenu-
ated which decreases the dynamic bandwidth, thus the difference in level
between the loud and the soft levels. This makes it possible to increase the
average level and reduce the risk of digital clipping.
In the Multi Band Compressor, the signal is divided into three fixed fre-
quency ranges (“Hi”, “Mid” and “Lo”), which are processed separately. This
improves the flexibility and sound quality considerably.
You can test the effect the compressor has on each frequency range by us-
ing one of the three Solo buttons.
