A digital audio effect for real time mixing applications, which dynamically adapts to the multi-channel input, has been implemented. The resulting audio mix is the direct result of the analysis of the content of each individual channel with respect to the other channels. The implementation permits the enhancement of a source with respect to the rest of the mixture by selectivity unmasking its spectral content from spectrally related channels. A masking measurement has also been implemented in order to measure the efficiency of the algorithm.