Why does digital music only make sense to a human ear?

German acoustics professor Eberhard Zwicker spent years studying the ways humans recognise sounds. After conducting a number of experiments, he reached an important conclusion: a human ear doesn’t abide by the same principles as a microphone. It is a sense organ that became, through evolution, specially adjusted to speech recognition and detecting danger in the natural environment. That’s what makes it efficient in discerning conversations in the buzz of a coffee shop, but not as a universal...