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.
Escolla o modo da canle do ficheiro Mp3 resultante: Estéreo Neste modo, o codificador non fai uso das correlacións potenciais entre as dúas canles de saída; pode, porén, negociar a demanda de bits entre ambas as canles, p. ex. dá a unha canle máis bits se a outra contén silencios ou precisa menos bits por mor dunha menor complexidade. Estéreo acoplado Neste modo, o codificador empregará as correlacións entre ambas as canles. O sinal matrizarase nunha suma (« media »), calculada por L+R, e nun sinal resta (« lado »), calculada por L- R, e resérvanse máis bits para a canle media. Isto incrementará o ancho de banda se o sinal non ten demasiada separación no estéreo, polo tanto, gañarase en calidade de codificación significativamente. Mono A entrada codificarase como un sinal mono. Se era un sinal estéreo, converterase a mono. A mistura calcúlase como a suma da canle esquerda e dereita, atenuada en 6 dB.