Before revision: Play top: File:Bach - Taylor 1873 top.midPlay bottom: File:Bach - Taylor 1873 bottom.mid Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale,Anssi Klapuri, "Introduction to Music Transcription", in Signal Processing Methods for Music Transcription, edited by Anssi Klapuri and Manuel Davy, 1–20 (New York: Springer, 2006): p. 8. .
After revision: Play top: File:Bach - Taylor 1873 top.midPlay bottom: File:Bach - Taylor 1873 bottom.mid Pitch is a perceptual property that allows sounds to be ordered on a frequency-related scale,Anssi Klapuri, "Introduction to Music Transcription", in Signal Processing Methods for Music Transcription, edited by Anssi Klapuri and Manuel Davy, 1–20 (New York: Springer, 2006): p. 8. .