Mapping A4
It all begins with A4. A4 is tuned to A440 which on a well calibrated SAT will be (A4 @ 0.0). So pick a string of A4, and tune it to stop the lights.
Robert Conrad, Registered Piano Tuner/Technician, Tucson, AZ
It all begins with A4. A4 is tuned to A440 which on a well calibrated SAT will be (A4 @ 0.0). So pick a string of A4, and tune it to stop the lights.