RENEWED attention to the “chromatic octave” tempts me to suggest an experiment. There used to be a gentleman, Smith, I believe, by name, who refuted the undulatory theory by means of a disc, divided ...

When two notes are an octave apart, one has double the frequency of the other yet we perceive them as being the same note – a “C” for example. Why is this? Readers give their take This question has a ...