The problem was that ms_mask altered the phase during distortion
calculations but did not alter it again during codebook selection (e.g.
INTENSITY_BT or INTENSITY_BT2), so the phases got swapped around and the
artifacts appeared. M/S is off by default so the artifacts were only
present if -stereo_m
>cpe->ms_mask[w*16+g] = 0;
This defeats the purpose of changing the phase of the spectral coefficients
if ms_mask has been set by search_for_ms. If is_mask[idx] is 1 then ms_mask
is only used to alter the phase of the spectral coefficients, so probably
the phase gets altered incorrectly. The reason
On Fri, Jun 26, 2015 at 5:16 PM, Rostislav Pehlivanov
wrote:
> +if (dist2 <= dist1) {
> +cpe->is_mask[w*16+g] = 1;
> +cpe->ch[0].is_ener[w*16+g] = ener1/ener01;
> +cpe->ch[1].is_ener[w*16+g] = ener0/ener1;
> +
This commit implements intensity stereo band marking and makes use of the
previous commits in the series to encode such bands and spectral coefficients.
It also adds the new option aac_is, which is 0 by default, used to control
wheter such coding is done or not. The interaction of intensity ster
