DSU Lesson #3 - Practice Moving a DSU

Below are five buttons.

One plays the DSU and the other four raise and lower each string.

Move the DSU less than 0.5 cents:

1) Detune one string of the DSU the smallest amount possible.

2) Then tune the other string so that the DSU is clean again.

You must move the DSU less than 0.5 cents, and you must retune the DSU to be a clean unison again.

Notes:
To simulate the effect of friction, sometimes the pitch won't change when you click Raise or Lower.
Also, sometimes the pitch will jump more than other times. This gives the feel of tuning a real piano.
Sometimes the strings won't sound together. Just click Play DSU and that should fix it.
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The Go APE method teaches DSU tuning as well as many other
advanced techniques that are easy to learn, and together help you
produce aural tunings that are more Accurate, Precise, and Efficient!