Resources for THEORY AND PRACTICE OF PIANO TUNING
A set of demo isolated beat rates for an equally tempered scale, at the correct partial pitch for tuning pitch at A440.
For ear training: A set of demo major thirds C4 to E4 with variable beat rates, together with the corresponding isolated partial.
In a double beat rate there is more than one distinct beat rate in a single beating partial, which can lead to confusion over the tempering of the interval.
Demonstration of the principle of the “cat” in unison tuning, together with isolated partials, showing its formation from phase differences in the partials.