On Sat, Apr 12, 2008 at 11:32:49PM +0200, Wolfgang Woehl wrote: > > The VU meter measures the average of the absolute value of > > the signal, 'average' meaning a second order filter that > > reaches 99% in 300ms and overshoots between 1.0 and 1.5%. > > It is calibrated to indicate 0dB for a sine wave at -10dB > > w.r.t. digital full scale (which is +/-1 peak in this case). > > Are these numbers modelled after a real device? The VU meter is defined by ANSI, BS and IEC standards. For the PPM there are BS and EBU standards. The numbers quoted are those I learned long ago when I was a student at the broadcasting and performing arts academy in Brussels... Nostalgia indeed... Ciao, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Lascia la spina, cogli la rosa. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
