From: Carl Hetherington (lists_at_carlh.net)
Date: 11/25/03 12:39 EST
From: Carl Hetherington <lists@carlh.net> Subject: Re: [Ardour-users] Re: good quality reverb - brutefir! Message-ID: <Pine.WNT.4.58.0311251733440.1252@renato> Date: Tue, 25 Nov 2003 17:39:40 +0000 (GMT Standard Time) On Tue, 25 Nov 2003, R Parker wrote: > Are you guys suggesting it would be practicle to use > IR for creating filters of rooms that have great > accoustical values for audio production? In practice, > record an instrument in a crappy room, apply "great > room" which filters out the responses of sucky room. > The result sounds like it was recorded in "great > room". And now you've got something that's mixable. In theory, yes. Except that you'd have to apply "inverse of crappy room" before you applied "great room". That's unless the crappy room is crappy in terms of having no real acoustical effects rather than lots of horrible ones. This can be a bit tricky. Say, for example, that your crappy room has a big null in its frequency response at 500Hz. This means that anything recorded in the crappy room will have not much energy at 500Hz. When you apply "inverse of crappy room" it will try to increase the level of the signal at 500Hz, but something times nothing is still nothing. Even worse, you'll have some noise instead of nothing. So the signal-to-noise ratio of the un-crappified signal will be poor at 500Hz because the decrapifying convolution will attempt to boost signal and only end up boosting noise. But it's all possible "In Theory" (TM). > But Brutefir has the potentially even more interesting > because you could create additionaly tools; echo, > reverbe, etc. Right? Yes. Since an impulse response is so general you can use it to express pretty much anything. Cheers Carl "there's an email with a lot of crap" ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Ardour-users mailing list Ardour-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ardour-users
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