User:PeterSampson/Sand-Box

My experimentation page

Sand-Box for when I have to make tricksy edits.

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Version with sections and images embedded in workflow

Chains - for batch processing and effects automation

A Chain is a sequence of preconfigured commands in a set order (mainly effects) that can be applied automatically to projects or audio files. Any built-in or Nyquist effect shown in the Effect Menu can be added to a Chain. The two uses of Chains are for:

• Batch processing (where many audio files are processed unattended with one or more effects then saved to a new file)
• Effects automation (where the track or tracks in the current project are subjected to the same prescribed sequence of effects that are used for other projects, and optionally, a file exported).

See the examples below.

Workflow

There are two related Chain commands in the File Menu called Edit Chains and Apply Chain. The workflow is as follows.

Edit Chains

First, use File > Edit Chains... if you need to create a new Chain or to edit an existing chain.
To save an audio file as part of the Chain process, you must use an Export command.

Accessed by: File > Edit Chains...

The left hand box in the dialog box (labeled Chains) Chains contains a list of already defined chains. You can define the name of a new chain and select which chain is active by using the Add, Remove and Rename buttons.

The right hand box (labeled Chain) lists the ordered sequence of commands for the chain selected in the "Chains" box on the left. Here you can add or remove commands for the selected chain, change the order in which the commands execute in the chain, or edit the parameters for some effects in the chain.

For further details see the Edit Chains page.

Apply Chain

Gale 12Feb13: Moved the Apply Chain section into the workflow to see how it goes. I think it works for this section and removes duplication. I could see that Step 1 and Step 2 could each be H3 headers if Step 1 and sub-steps gets too complex.

Second, use File > Apply Chain... to select one of the existing chains then either:

• choose Apply to Current Project to run the Chain on the entire project in the current window, or
• choose Apply to Files to run the Chain on selected external audio files in a single directory.
  
  

Accessed by: File > Apply Chain...

If you already have audio in the current project window, you must save and close that project using File > Close before applying a Chain to files.

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Examples:

• A "batch processing" Chain might use Compressor to reduce the dynamic range of multiple WAV files (also normalizing them to maximum amplitude of 0 dB), then convert them to MP3 format.
• An "effects automation" Chain for the current project might run:
  1. Normalize with settings of:
     • Remove any DC offset
     • -10 dB (to allow for boosting frequencies later in the Chain without clipping)
  2. Noise Removal
  3. Equalization (to perform the frequency adjustment)
  4. Normalize again at different settings (without offset removal, setting a final amplitude of -1 dB).