Removing noise from sermon recordings
Date: 13 May, 2008
Posted by: admin
In: christianity, faith & religion
I’ve a little note on my desk from last time I had to clean up a dodgy sermon recording. It was a spur of the moment idea to record onto the laptop, little did I know that the laptop had a built in microphone and so recorded not only on the line-in from the mono out (post-mix) of the mixing desk but also the hiss, flutter and buzz of the laptop via it’s own mic.
Here’s what I did in audacity to get a bearable result:
- Noise removal using a “silent” section as the noise sample
- Effect > Glame, Low-pass (not butterworth)filter: 4800, 10poles
- Dynamic range compress: Threshold -30dB, Ratio 3:1, Attack 6.2
- Split new (to section up as “tracks” of a reasonable size to be compressed and emailed)
- Export multiple to variable rate MP3
That may not help anyone, but I can chuck that scrap of paper away now.