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Audio processing and functions
Normalize
The Normalize function allows you to specify the desired
maximum level of the audio. It then analyzes the selected
audio and finds the current maximum level. Finally it sub-
tracts the current maximum level from the specified level
and raises the gain of the audio by the resulting amount (if
the specified maximum level is lower than the current max-
imum, the gain will be lowered instead). A common use for
Normalizing is to raise the level of audio that was recorded
at too low an input level. The dialog contains the following
settings:
Maximum
The desired maximum level for the audio, between -50 and
0dB. The setting is also indicated below the Gain display
as a percentage.
Pre- and Post-Crossfade
See “Pre/Post-Crossfade” on page 119.
Phase Reverse
Reverses the phase of the selected audio, turning the
waveform “upside down”.
The dialog contains the following settings:
Phase Reverse on
When processing stereo audio, this pop-up menu allows
you to specify which channel(s) should be phase-reversed.
Pre- and Post-Crossfade
See “Pre/Post-Crossfade” on page 119.
Remove DC Offset
This function will remove any DC offset in the audio selec-
tion. 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 process-
ing, and it is recommended that you remove them.
Reverse
Reverses the audio selection, as when playing a tape
backwards. There are no parameters for this function.
Silence
Replaces the selection with silence. There are no parame-
ters for this function.
Stereo Flip
This function works with stereo audio selections only. It al-
lows you to manipulate the left and right channel in various
ways.
The dialog contains the following parameters:
Mode
This pop-up menu determines what the function does:
!
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.
Option Description
Flip Left-Right Swaps the left and right channel.
Left to Stereo Copies the left channel sound to the right channel.
Right to Stereo Copies the right channel sound to the left channel.