Hi @krpulley,
Auto-Align looks for common information between two tracks. It analyses the common information and calculates a delay value that will offer optimal correlation between the two tracks with minimal Comb-filtering.
Ultimately, Auto-Align correlation analysis should be fed with only the sounds that you’re trying to align. For example, if you’re aligning the overheads (receive 1) to the snare (send 1), raise the side chain noise floor slider on the overheads channel until only the snare hits are visible in the main spectral phase correlation display. Then click on the Detect button to let Auto-Align do its magic.
You can think of the Noise floor as a detection trigger to Auto-Align - only when a sound passes the noise floor level, Auto-Align’s correlation detection analysis will kick in.
You don’t have to use both sliders, you can use only the Sidechain slider.
If Auto-Align comes up with different readings on the same two tracks on different instances, there are a few things that could potentially throw Auto-Align’s detection off:
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If the Drum part Auto-Align is listening to has Kicks and Snares at the same time (on the same beat), it is better to use a different part of the track. It’s also advised to use the same passage of music for each Auto-Align analysis.
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If the mics have a lot of bleed, or if the sound they picked up is very different and there’s little similarity between the two tracks.
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If there are other plugins before Auto-Align. Auto-Align should be the first plugin in your chain.
If you have any questions, feel free to contact us at support@soundradix.com.
You can also send us your project and we’d be happy to take a close look.
Thanks,
Oran