Hello Piano Players and music lovers. This blog is about the effects of Humidity, the lack of enough humidity, and the changes in Humidity on a piano.
High humidity does two things to a piano. Its causes rust and causes the wood to swell. The Main parts rust affects on a piano is the strings. The tone is affected by rust on the strings. This happens usually in pianos subjected to a lot of high humidity. It is also common on old pianos. Rust on strings also causes what is called false beats. This is where one string sounds like it is out of tune. This will affect the higher strings more though it can affect the middle of the piano. When tuning a piano like this we can make this problem a little better by using phase cancellation. If the high end of your piano sounds like it is not in tune as well as the rest of the piano right after a tuning, this is why. Note: right after tuning. The high end usually is the first part to go out of tune because the strings are shorter.