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 <klaussfreire@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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];
}
}