Tempo Estimation by Frequency Analysis for Pitch Changes During Singing without Accompaniment
Tadashi YOSHIDOME, Jun Goto, Noriyuki Kawarazaki · The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) · 2021
We aim at communication between human and robot where the robot claps hands according to a person who sings without accompaniment. This paper describes a method of acquiring the tempo from unaccompanied singing. The method estimates the tempo of a song by Fourier transforming the changes in pitch over time. A vector is generated in which the intensities with respect to the frequency of the note are arranged, and the change in pitch is detected from the similarity of the vectors before and after. Good experimental results were obtained when changes in pitch were detected by cosine similarity and the tempo of the song was fast.