Itakura–Saito distance
= Itakura–Saito distance
{wiki=Itakura–Saito_distance}
The Itakura–Saito distance is a measure used primarily in the context of signal processing and speech recognition to quantify the difference between two probability density functions (PDFs) or spectrograms. It is particularly useful for analyzing audio signals, as it provides a way to measure the distortion between two signals in a way that is more consistent with human perception than some other distance measures.