Miscellaneous
Middle C sine wave is an interesting note. Good for tuning. the 'middle' is a music notation reference to its placement halfway between the treble and bass clefs. I always thought is was the exact middle note on an 88 key piano; never thought about the math until now (no middle note when there is an even number of keys). Regardless, it is a common reference in piano terminology as C major has no sharp or flat notes making it a popular key for beginning piano. I reckon A-440 is the most popular note for tuning as orchestras tune to A. C is a close runner up in the popularity contest. The pure tone of the sine wave has no upper harmonics in its continuously smooth waveform. The is the one of several sine wave tones in a series on the channel. Many more interesting audio explorations are on the way. Thanks for stopping by and listening. Dale