Unison Problems Lesson 3

Weinreich Drift

Professor Gabriel Weinreich was a physics professor and pianist who lived from 1928 -2023.

He published many papers on acoustics and once did a study to determine if slightly out-of-tune unisons had a longer sustain (they do).

During that study he noticed an unusual phenomenon. Once a string is tuned and measured and then a 2nd string is tuned to it cleanly, the resulting pitch most likely will be the same, but sometimes it goes up, and sometimes it goes down.

CLICK THIS LINK to go to a copy of one of the articles he wrote about this.

CLICK THIS LINK to read my PTG Journal article where I share my own findings and discoveries of piano strings that experienced "Weinreich Drift".