This is an update to the How-to article, “How to speed up podcasts for free with Audacity.”
In Audacity 1.3.2 (Beta), configuring the batch script is easier. The developers moved the location, though, so you might be lost if you recently updated to this version.
First, setup the chain: File > Edit Chains
In the left pane of the window that pops up, you’ll need to add a new chain. Title it “Speedup,” or whatever you like. With it selected, the right pane should have only one parameter: END.
Select that command, then at the bottom of the window, click Insert. Another window will pop up, and you’ll want to choose Change Tempo. Change the parameter to 25.000000, then click OK. (Later, you can increase the tempo if you’re comfortable.) Again, click Insert, select the ExportMP3 command, then click OK. Finally, OK out of the Edit Chains window.
Then, if you want to run the script, go to File > Apply Chain. Select the chain you just created, click Apply to Files, then browse to the folder where the podcasts are stored. Like I mentioned in the previous How-to, I copy the MP3s to the root podcast folder, so I’m not limited to one show (folder) at a time.
Conclusion
This’ll empower you to listen to podcasts, or any other supported audio files in a shorter amount of time, and you can convert multiple files at once. In addition to podcasts, I also speed up class lectures. 80-minute classes reduced to 64 minutes — awesome!
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