Pan/Expand controls
The following controls are located in the Pan/Expand dialog.
Control
Description
Process mode
The
Process mode
drop-down list contains the following options:
•
Pan (preserve stereo separation)
Applies the pan effect without mixing the
channels, thereby simulating the spectral positioning of stereo recordings.
•
Pan (mix channels before panning)
Mixes the left and right channels prior to
applying panning effects.
•
Stereo expand
Allows you to contract or expand the image of stereo audio from
dead center (mono) to completely panned wide (no center channel).
•
Mix mid-side (MS) recording to left and right channels
Simulates a recording
technique in which one microphone is pointed directly at the source and used to
record the center (mid) channel, and a second microphone is pointed 90 degrees
away from the source (side) and used to record the stereo image.
For proper playback on most systems, MS recordings must be converted to
standard left/right orientation.
To convert an MS-recorded track to a left/right track, first ensure that the center
channel is in the left track and the side channel on the right. The MS mix function is
then used to set the width of the stereo image for the converted track.
Output gain
Determines the amount of gain applied to the signal following pan/expand
processing.
Show wave
The
Show wave
drop-down list provides several settings for drawing the current
selection’s waveform on the envelope graph. This function is available only for small
selections.
Reset Envelope
Clicking the
Reset Envelope
button clears all but the two original envelope points.
• For the
Pan
modes, these two points prevent unintended panning.
• For the
Stereo expand
and
Mix Mid-Side
modes, these two points prevent
unintended expansion.
Resample
The
Resample
command allows you to change the sampling rate of a file without altering its pitch or duration.
•
Resampling to a lower sample rate results in less frequent samples and a decreased file size, but adds aliasing noise to the audio.
Apply an anti-alias filter during resample
•
Resampling to a higher sample rate results in extra samples being created through interpolation and an increased file size. Like
increasing bit depth, up-sampling does not improve the quality of an audio file, but permits subsequent audio processing to be
performed with greater precision.
PROCESSING AUDIO
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Summary of Contents for Pro 10
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