Date: Thu, 10 Dec 1998 10:33:49 +0200 (EET) From: Narvi <narvi@haldjas.folklore.ee> To: "Jordan K. Hubbard" <jkh@zippy.cdrom.com> Cc: Ben Cottrell <benco@pendor.McKusick.COM>, freebsd-multimedia@FreeBSD.ORG Subject: Re: Disk based audio editing tool? Message-ID: <Pine.BSF.3.96.981210103257.9604B-100000@haldjas.folklore.ee> In-Reply-To: <18997.913182430@zippy.cdrom.com>
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On Tue, 8 Dec 1998, Jordan K. Hubbard wrote: > > I wrote my own curses-based audio recording program, and I know how to > > crunch PCM data and calculate loudness in dB and stuff like that, > > but the identification and removal of the pops is beyond me. > > Hmm. If you've already figured out how to calculate loudness then the > elimination of pops just involves your existing work plus a little bit > of statistics keeping. :) Clicks and pops actually have very high > transient volume levels and stick out like a sore thumb on a 'scope. > > If you keep a running average of the median volume, you should > probably be able to eliminate a surprising number of such transients > with a very simple algorithm. No guarantees that this will work on > punk rock music, of course, where such transients often count as > artistic expression. > But in reality, all such editing and effect involve lots of Fourier transforms. > - Jordan > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-multimedia" in the body of the message > Sander There is no love, no good, no happiness and no future - all these are just illusions. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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