Sometimes I have to do an immense amount of painstaking legwork and research to find things out the truth about something for my clients... These are my consolidated results... so you don't have to!
Thursday, March 31, 2011
Elimiate breathing sounds in voiceover audio with this handy filter
When you're cutting clean, well-recorded and professional VOs where the breaths are real loud and clear you can usually use the expander filter to pot out low-volume breath sounds instead of cutting them out manually.
Set the threshold at the level perhaps just above where the breaths are (they were at around -30db) you can use the ratio slider to move them down in the dynamic range so they're essentially inaudible. Then you want to set the release time a little long because otherwise you'll start to lob off the ending consonants like S and F and "Sh"
There is a reason why I qualify this as specifically applying to professionally recorded voiceovers and that is that in non-boothed or poor recordings the signal-to-noise ratio is low, or in other words there's a loud noise floor surrounding your lovely voice, and this filter will give you a different result in that case. You'll hear the noise floor coming in and out, depending on your attack/release times: no good for most uses. In professional recordings done from a sound booth, or with the microphone very close to the subject, your noise floor is reduced and this filter will be more effective.
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