> Does > anyone know about a good ALSA compatible tone generator which I could use > to find the peaks? My sound card (well, a 24/96 one, ummm ...) and my > Sennheiser 580 phones should be able to provide a near-flat frequency > response up to about 20 kHz... You could use XMMS and add a url tone://12000 to the playlist (you need the tone generator plugin, of course). Or try Audacity, even though that's kind of oversized ;) Robert -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://www.linuxtv.org/pipermail/vdr/attachments/20050615/4941241d/attachment.pgp