2008/8/4 Kostya <[EMAIL PROTECTED]>: > On Mon, Aug 04, 2008 at 07:58:56PM +0200, Michael Niedermayer wrote: >> On Mon, Aug 04, 2008 at 06:43:23PM +0200, kostya wrote: >> > Author: kostya >> > Date: Mon Aug 4 18:43:22 2008 >> > New Revision: 3010 >> > >> > Log: >> > Audio preprocessing for better compression >> [...9 >> > +// low-pass filter declarations and code >> > +#define IIR_ORDER 4 >> > + >> > +/** >> > + * filter data for 4th order IIR lowpass Butterworth filter >> > + * >> > + * data format: >> > + * normalized cutoff frequency | inverse filter gain | coefficients >> > + */ >> >> A lowpass filter should be advantaneous for all MDCT based codecs not just >> AAC, but then i guess that is true for the whole psychoacoustic stuff ... > > I've already though of moving that into separate file. > Anyway, after I finish that I will think on how to apply psychoacoustics > to other codecs.
How much psychoacoustic stuff has been implemented for the vorbis encoder? Rob _______________________________________________ FFmpeg-soc mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-soc
