User manual

310
Audio processing and functions
Audio processing
Pitch Shift Mode
These are the same parameters as on the Transpose tab, see “Algorithm Settings” on
page 308.
Example
Let’s say that you wish to create a pitchbend effect, so that the pitch is raised linearly
by exactly 2 semitones in a specific part of the selected audio.
1. Remove all curve points by clicking the Reset button.
2. Select a linear curve by clicking the Curve Kind button to the right.
3. Make sure that the Range parameter is set to 2 semitones or higher.
4. Create a point where you want the pitchbend to start by clicking on the envelope
line.
Since this is the starting point for the pitchbend, you want its pitch to be zero (the
envelope line should still be straight). If necessary, use the Fine-Tune parameter to
set the curve point to 0 cents, because this point governs the start point, where
you want the pitch transition to begin.
5. Create a new curve point at the horizontal position where you want the pitchbend
to reach the full value.
This curve point determines the rise time of the pitchbend effect, i. e. the further
away from the starting point the new point is positioned, the longer it will take for
the pitchbend to reach the full value, and vice versa.
6. With the second point still selected, use the Transpose and Fine-Tune parameters
to set the pitch to exactly 2 semitones.
7. Create a new curve point to set the duration of the pitchbend, i. e. the time the
pitch will remain transposed by 2 semitones.
8. Finally, create a point where you want the pitchbend to end.
You do not have to create a new point if you are at the end of the audio file, since
there is always an end point at the right side of the waveform display.
9. If necessary, make additional settings in the Pitch Shift Mode section, see
“Algorithm Settings” on page 308.
10.Click Process.
The pitchbend is applied according to the specified settings.
Remove DC Offset
This function will remove any DC offset in the audio selection. A DC offset is when
there is too large a DC (direct current) component in the signal, sometimes visible as
the signal not being visually centered around the “zero level axis”. DC offsets do not
affect what you actually hear, but they affect zero crossing detection and certain
processing, and it is recommended that you remove them.
There are no parameters for this function. Note that you can check for DC Offset in an
audio clip using the Statistics function (see
“Statistics” on page 321).
!
It is recommended that this function is applied to complete audio clips, since the DC
offset (if any) is normally present throughout the entire recording.