Paul Davis wrote: > On Tue, 2008-11-04 at 14:08 +0700, Patrick Shirkey wrote: > >> Paul Davis wrote: >> >>> On Tue, 2008-11-04 at 11:25 +0700, Patrick Shirkey wrote: >>> >>> >>> >>>> Just out of interest how much processor power would it take to normalise >>>> on the fly? >>>> >>>> >>> it doesn't need a CPU, it would need a time machine to travel into the >>> future to measure the loudest sample still to come. >>> >>> >>> >>> >> Even if we are talking about a static collection of audio files? >> > > that doesn't meet my understanding of the term "on the fly". > > look, normalization is a simple process: find the loudest sample. get > the ratio of its value to the maximum possible sample value. multiply > every sample by this ratio. done. no shortcuts, but also no complexity. > > what you seem to be after is a compressor, which will keep the level of > the output within some defined range. entirely different beastie. > Your right. I was looking at it from the wrong angle. I knew there was a well defined principal at use in the radio world. So what the original poster wants is to add a compressor to the output path for amarok or whatever audio track player is being used... Jack-rack would probably do but surely someone has written a nice compressor interface for sc4 by now? I looked into it once but didn't have time to finish. I was thinking of ripping out the compressor code in jamin. Also the work that Jan did on the parametric eq would make a nice stand alone interface. Cheers. -- Patrick Shirkey Boost Hardware Ltd. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
