a long shot, but maybe you can hack something together using sox
http://sox.sourceforge.net/sox.html
2012/1/13 Jean-Francois Mauguit <[email protected]>
> Hello,
>
> On 13 Jan 2012, at 00:45, Frédéric wrote:
>
>
> Hi,
>
> As far as I understand LS, it would perhaps be possible to:
> - duplicate your source (ie. source_A = source_B)
> - use "filter" on source_B to enable a high pass filter that would cut
> any frequency below 20 Khz
> - use "on_blank" to do nothing when source_B is blank, else your
> triggered action when not blank.
>
>
> It could work. I'll have to set up a lab to test that :-)
>
>
> Another way to do this would be to add a third track to your stereo source.
> You'd be able to use audible "tops" on the third track without needing
> to duplicate and filter your original stereo source.
> And remove the third track before outputting the source.
>
>
> As it comes from an FM broadcaster, I don't think they could synchronize a
> second source with the main stream to send the top in this second source.
>
> Thanks for the tip,
>
> Jef
>
>
>
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