Date: Tue, 08 Dec 1998 21:47:10 -0800 From: "Jordan K. Hubbard" <jkh@zippy.cdrom.com> To: Ben Cottrell <benco@pendor.McKusick.COM> Cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: Disk based audio editing tool? Message-ID: <18997.913182430@zippy.cdrom.com> In-Reply-To: Your message of "Tue, 08 Dec 1998 21:12:07 PST." <199812090512.VAA26951@pendor.McKusick.COM>
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> 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. - Jordan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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