What is Tuning?

Tuning is the adjustment made to the piano by the piano tuner to bring each string to its proper tension. There are approximately 230 separate strings in the piano, each with a total of between 160 and 200 pounds of tension.

The standard international pitch is 440 cycles, or vibrations, per second; that is, the pitch that sounds when the “A” above middle “C” is struck. If the piano is allowed to go ½ step below pitch, it can mean a difference of 3,000 to 5,000 pounds of tension on the strings and soundboard. When a tuner tells you your piano needs a pitch raise, he means the tension needs to be increased so he can bring the sound back to standard pitch.

© Joel Klar 2013