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filtering based on volume?
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filtering based on volume?
by Sanjeev Sharma-5
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So would it be possible to do something like: "drop/remove/delete the loudest 5% of the sounds in this file, or drop the volume of those loudest to zero" (more likely it will be the loudest 1%) and are there any example command lines to do this, or something similar? I'm sending this from the same address where I get the list but hte list manager thinks I'm not subscribed ... oh, well .. -- Regards, Sanjeev (Sam) Sharma ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Sox-users mailing list Sox-users@... https://lists.sourceforge.net/lists/listinfo/sox-users |
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Re: filtering based on volume?
by Fmiser
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> throwit1@... wrote:
> > So would it be possible to do something like: > > "drop/remove/delete the loudest 5% of the sounds in this > file, or drop the volume of those loudest to zero" > > (more likely it will be the loudest 1%) > > and are there any example command lines to do this, or > something similar? That is called an inverse or reverse gate. I think "compand" could do this. Set the output level to -inf when the input reaches -10 or so. Something like. play audio.wav compand .1,.1 -90,-90,-11,-11,-10,-inf 45 -90 .1 Replace "play audio.wav" with "sox in.wav out.wav" to generate a new file rather than just listen. -- Philip ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Sox-users mailing list Sox-users@... https://lists.sourceforge.net/lists/listinfo/sox-users |
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Re: filtering based on volume?
by Sanjeev Sharma-5
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I will try that, thanks - and in fact I thought of it but I immediately assumed it would run afoul of compand 's
"monotonically increasing" requirement On Fri, Oct 09, 2009 at 01:05:25PM -0500, Fmiser wrote: > > throwit1@... wrote: > > > > > > > "drop/remove/delete the loudest 5% of the sounds in this > > file, or drop the volume of those loudest to zero" > > > > (more likely it will be the loudest 1%) > > > That is called an inverse or reverse gate. > > I think "compand" could do this. Set the output level to -inf > when the input reaches -10 or so. > > > Something like. > play audio.wav compand .1,.1 -90,-90,-11,-11,-10,-inf 45 -90 .1 > > Replace "play audio.wav" with "sox in.wav out.wav" to generate a > new file rather than just listen. > > -- Philip > ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Sox-users mailing list Sox-users@... https://lists.sourceforge.net/lists/listinfo/sox-users |
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Re: filtering based on volume?
by robs-5
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--- On Sat, 10/10/09, Sam <throwit1@...> wrote:
> From: Sam <throwit1@...> > Subject: Re: [SoX-users] filtering based on volume? > To: sox-users@... > Date: Saturday, 10 October, 2009, 5:13 AM > I will try that, thanks - and in fact > I thought of it but I immediately assumed it would run afoul > of compand 's > > "monotonically increasing" > > requirement Ah, that's only for the input level; free rein for the output level. /Rob ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Sox-users mailing list Sox-users@... https://lists.sourceforge.net/lists/listinfo/sox-users |
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