
7.3 Batch Processing Plug-ins 199
7.3.0.5 Instructor
This dialog is exclusive to the Batch Processor Workspace and is a special utility plug-in
that allows you to "instruct" the next plug-in in the batch with information about the audio it
needs to process. This is useful for situations where you want to use plug-ins that require
an analysis stage. In effect, the Instructor plug-in turns a monopass plug-in into a dual pass
one.
Some Monopass plugins, such as Denoisers or DeBuzzer, need to learn about the audio they
are to process before they can begin processing correctly. The "Instructor" plugin can help
in this situation, since it can "teach" the next plug-in in the audio chain about the audio it is
about to process.
The Instructor plugin must be used as a pair:
1. The first instance replicates the start of the audio stream. This means the next plug-in
in the chain will receive the start of the audio stream twice.
2. The second instance of the plug-in comes after the plugin being "instructed". It simply
cuts out the extra audio injected by the first instance of the Instructor plug-in.
This means, for example, that the Denoiser plug-in has time to sufficiently analyze the audio
stream before the second stream start is injected. The "badly" processed first part of the
stream is skipped by the second instance of the Instructor plug-in.
You can set the Instructor plug-in to replicate up to 20 seconds of audio. Be careful not to
set a value that is longer than the shortest file in the batch, otherwise a short file will be over
truncated by the second instance of the plug-in.
You can access this dialog from the Batch Processor Workspace via Plug-ins window >
Monopass Plug-ins > Instructor.
For an explanation of each parameter and interface feature, click on , or the 'What's this?'
question mark icon. For more information see Getting Help
Related topics
Batch Processing Plug-ins
7.3.0.6 Time Stretch
This dialog is exclusive to the Batch Processor Workspace and allows you to change the
duration of an audio selection (usually without changing its pitch). For more information on
the Time Stretch dialog parameters see Time stretching.
You can access this dialog from Batch Processing Workspace > Plug-ins window >
Monopass Plug-ins > Time Stretch.
For an explanation of each parameter and interface feature, click on , or the 'What's this?'
question mark icon. For more information see Getting Help
Related topics
Time stretching
Batch Processing Plug-ins
WaveLab 7
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