Q: Why can’t I change the critical band?
A: The Critical Band will change when you adjust the pitches, because it is a product of the two frequencies. It is a perceptual construct with various ways of calculating what it might be. In bitDyad, the Critical Band simply provides a rough sense of where this perceptual area might be, given the dyad the user is tuning.
Q: What kinds of pitches does the bitDyad keyboard play?
A: The bitSuite keyboards always default to ET pitches, as does the keyboard in bitTemper.
Q: What is the multiplier multiplying?
A: The multiplier is multiplying the frequency of the reference pitch by a given number, and produces a new pitch which can then be tuned and tweaked.
Q: Why are there two sonograms, and what’s running below them?
A: The left-hand and right-hand sonograms correspond to the reference pitch and the tuning pitch respectively. The lower sonogram provides a visual composite of the two sonograms, allowing the user to “see” beating between the overtones of the two pitches.
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