> From: [EMAIL PROTECTED] > Date: Sat, 29 Dec 2001 23:44:08 -0500 > > My search is not directly related to cryptography, except perhaps, as > part of the stegonograph y threads: > > Does anyone know of a source package that can discriminate > vocal/ambient noise sources from musical/instrumental sources? Ie, > instruments vs voice? I'm aware of various canned bandpass > approaches, which work (sorta) for karoke use, but don't quite work > for what I'm trying to do. (I want to preserve both "channels" for > separate analysis.)
Not exactly what you're looking for, but it might give you somewhere to look... In the early '70s there was work done at the University of Utah by a doctoral candidate (first name 'Tony' - I forget the last name) separating voice from music. He used a recording by Caruso from the early part of the 1900's as his data source. Tony succeeded. Had the voice on one channel with the music on the other. Used a digital FFT to make the discrimination. The FFT was compiled in Fortran and ran under DEC Tenex in a standalone mode on a PDP-10. (To give you the time frame) About this same time, also at the University of Utah, Barry Wessler made a 'Hidden line' algorithm that also ran on the same setup. Barry made a 30 second animation of a biplane doing a barrel roll to show that the hidden line algorithm worked. Regards, Gregory Hicks > > -- > > [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > The Cryptography Mailing List > Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED] --------------------------------------------------------------------- Gregory Hicks | Principal Systems Engineer Cadence Design Systems | Direct: 408.576.3609 555 River Oaks Pkwy M/S 6B1 | Fax: 408.894.3479 San Jose, CA 95134 | Internet: [EMAIL PROTECTED] "There is no limit to what a man can do or how far he can go if he doesn't mind who gets the credit." - Robert Woodruff "The trouble with doing anything right the first time is that nobody appreciates how difficult it was." When a team of dedicated individuals makes a commitment to act as one... the sky's the limit. --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
