Considering that the stretch of octaves is perceived and not measured, the tuner decides which octave wants kind of octave stretching "by ear". Very good tuning involves compromise involving tonal brilliance, accurate intonation, and an consciousness of gradation of timbre in the compass of your instrument. The name of this https://kylerpwbgl.blogozz.com/30273905/considerations-to-know-about-piano-repair