because the quality is most fragile at high frequencies - the place where the most data is needed Funnily enough, for CELT, it's largely the opposite: high fre

because the quality is most fragile at high frequencies - the place where the most data is needed Funnily enough, for CELT, it's largely the opposite: high frequencies cost practically nothing to compress because of CELT's algorithm, whereas low frequencies are the main bandwidth-eater.