You can also set the values for
Start
,
Len
,
LpStr
and
LpEnd
from the Waveform screen.
When viewing the waveform, the pink frame on the large waveform represents the
Start
and
Len
parameters. You can move these end points by turning the top two control
knobs. If
Loop Mode
is set to
Forward
or
Bidirect
, you will also see a white frame within
the pink frame that defines the
Loop Start
and
Loop End
points. Use the bottom two
control knobs to adjust these end points. The corresponding values for the end points are
displayed above and below the large waveform. The sensitivity of the control knobs
depends on the Zoom level. Zoom out to make big adjustments then zoom in to make
fine adjustments.
Loop Fading
Let’s talk a little more about loop fading. Loop Fading is a
good way to smooth the transition when looping a sample.
The diagram to the right shows how the loop cross-fading
is applied at three different settings for the Loop Fade
parameter. The colored bars in the diagram represent
different equal length sections of the WAV file. The loop
points have been configured so that sections E, F, G and H
of the WAV file are looped. When Loop Fade is zero,
blackbox does not overlay any extra content on top of the
looped sections.
When Loop Fade is 25%, section D, which is a section of
WAV that is 25% of the length of the loop from immediately
before the loop start point, would be gradually faded in over
the last 25% of the looped section. So as section H starts,
section D fades in and section H is gradually faded out until
on D is left as we reach the loop point.
When Loop Fade is 100%, sections A, B, C and D are faded in
on top of sections E, F, G and H.
Note:
►
In order for the Loop Fade to work to the full extent, there must be
enough audio signal before the Loop Start point to draw from. For
example, if your WAV file is 1000 samples long, and your Loop Start is at
250 samples, you only have 250 samples, or 33% of the loop length,
before the Loop Start point to use for Loop Fading. You can set the
Loop Fade to a higher number, but it won’t be able to add additional
improvement because there’s no signal available to use.
►
To minimize the impact of Loop Fading on CPU usage, use the smallest
value for Loop Fade that gets the sound quality you need. This will vary
based on the sample.
Copyright 1010music LLC 2021
Page 30 of 106
Blackbox User Manual 1.7
