On Thu, Jul 2, 2015 at 3:13 PM, Rostislav Pehlivanov <atomnu...@gmail.com> wrote: > This commit modifies 02dbed6 to use band->active_lines to better gauge how > much information is contained within a single band and thus allow the > perceptual noise subsitution to more accurately determine which bands to code > as noise. The spread[w+g] used before this patch behaved more like a low-pass > filter for PNS band_types, which could mistakingly mark some low frequency > bands as noise. > > Reviewed-by: Claudio Freire <klaussfre...@gmail.com> > --- > libavcodec/aacpsy.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/libavcodec/aacpsy.c b/libavcodec/aacpsy.c > index 78232d4..b16f6b9 100644 > --- a/libavcodec/aacpsy.c > +++ b/libavcodec/aacpsy.c > @@ -787,7 +787,7 @@ static void psy_3gpp_analyze_channel(FFPsyContext *ctx, > int channel, > > psy_band->threshold = band->thr; > psy_band->energy = band->energy; > - psy_band->spread = spread_en[w+g]; > + psy_band->spread = band->active_lines * 2.0f / band_sizes[g]; > } > }
Can't say much since I proposed it myself, so... LGTM ;-) _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
