![]() For this calculation, the frequency spectrum of each note on the piano needs to be recorded. Entropy's approach is unique because it quantifies the entropy of the piano based on how well the combined harmonics of all the notes line up, and then determines a tuning that minimizes that entropy. There are several programs that can do this Entropy is not the only choice. Standalone electronic piano tuners and piano tuning software have ways of calculating how the pitch of each note should deviate from the equal temperament to make the harmonics line up better with each other. If you were to tune a piano to ideal pitches (equal temperament), it would actually sound terrible, because the strings produce overtones that are not at integer multiples of the fundamental frequency. The reason for using software to help tune a piano is that the non-ideal nature of the strings needs to be accounted for. When you are starting out, you may need to move the hammer more slowly to practice listening to beating and train your ear to identify when strings are in tune.Įntropy is free and open source, and relatively easy to install if you have a common platform.
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