Select the channel mode of the resulting Mp3 file: Stereo In this mode, the encoder makes no use of potential correlations between the two input channels; it can, however, negotiate the bit demand between both channel, i. e. give one channel more bits if the other contains silence or needs fewer bits because of a lower complexity. Joint-Stereo In this mode, the encoder will make use of correlations between both channels. The signal will be matrixed into a sum ("mid"), computed by L+R, and difference ("side") signal, computed by L-R, and more bits are allocated to the mid channel. This will effectively increase the bandwidth if the signal does not have too much stereo separation, thus giving a significant gain in encoding quality. Mono The input will be encoded as a mono signal. If it was a stereo signal, it will be downsampled to mono. The downmix is calculated as the sum of the left and right channel, attenuated by 6 dB.
Hautatu emaitzeko Mp3 fitxategiaren kanalaren modua: Estereoa Modu honetan kodetzaileak ez du sarrerako bi kanalen arteko korrelazio potentzialik egiten. Hala ere, bi kanalen arteko bit eskaera negoziatu dezake, adibidez kanal bati bit gehiago ematea bestea isiluneak baditu edo bit gutxiago behar badu konplexutasun baxuagoa duelako. Estereo- lotura (Joint- Stereo) Modu honetan, kodetzaileak bi kanalen arteko korrelazioa erabiliko du. Seinalea gehiketako ("erdia"), L+R kalkulua, eta diferentziako ("alboa"), L- R kalkulua, matrizean sartuko du eta eta bit gehiago kokatuko dira erdiko kanalean. Honela, banda- zabalera handiagotuko du seinaleak ez badu estereoaren bereizketa handiegirik, kodeketaren kalitateari irabazi nabarmen bat emanez. Monoa Sarrera mono seinalea bezala kodetuko da. Estereo seinalea edukiz gero, laginketa mono- ra jeitsiko du. Beherantz nahasteko ezker eta eskuineko kanalen batura lantzen da, 6 dB- tan estutuz.