Quote:
Originally Posted by RobertDDL
I have no experience with .ogg, so I don't know about the effects of what parameters there are, but I've tried out mono/stereo, and it does make a difference.
Don't worry about the good vibrations, they will not be affected by cutting off anything below 50 Hz! I don't know if you use Audacity? If so, look at "Analyze / Plot Spectrum" to see what I mean. I've often seen this sub-sonic stuff, also in my own recordings, and still haven't found out exactly where it comes from - if it's there, I remove it, but it's probably more visually annoying than an actual problem. What is a problem is that Audacity, when you apply a high-pass filter, sometimes increases peak levels - I don't understand the mathematics behind it, but it can cause clipping, and that's a disaster. Slightly changing cut-off frequency and/or rolloff sometimes makes a difference, but you may need to reduce over-all volume by several dB before applying the filter, and normalize volume afterwards.
Those noises - yes, you only hear them with earphones, but you can easily see them. But, my (limited) experience is with editing recordings of poems, and of course there's a difference in what you can reasonably do when it's a recording of one or two minutes, or several hours.
If you want to, we can continue to discuss this by mail!
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I don't mind discussing it here. This thread is about creating audiobooks, so this is germane.
I'll probably experiment with mono and subsonics eventually, but I've just finished putting the latest audiobook to bed and, since it's not critical, I'm reluctant to drag it out again already. Especially since I might run into another set of problems when I do. It will definitely be good to know for the next one. Yes, I use Audacity.
In the editing process I often remove things that I can see but not hear. It's good to know that someone might have heard them, but irksome that they might also hear the ones I left in.-)