electronic two-tone metronome - allegro ma non troppo (al tempo giusto)

A metronome is of vital importance in, among others, the study and practice of music, dance, and the morse code. Some people have a natural "feel" for rhythm; others have to work at it. But without a metronome that would be a very difficult task indeed. A metronome is an apparatus for fixing the tempo (Italian for speed) of a composition (music) or of a regularly recurring series of tones (morse, for instance). The commonest form in use is still the clockwork one of Maelzel who invented it in the early part of the nineteenth century. The indication at the head of a piece of music, M.M. = 100, for instance, means that the beat is to be taken at the speed of Maelzel"s Metronome set at 100 beats to a minute. However, such a metronome produces but a simple "tick tack" at speeds between 40 and 208 times per minute and is, moreover, relatively expensive. The electronic metronome we have designed has a two-tone output and can produce rather more complex rhythms than its mechanical counte...