Least-Squares Loal Tuning Frequency Estimation for Choir Music

Gnann V, Kitza M, Becker J, Spiertz M. Least-Squares Loal Tuning Frequency Estimation for Choir Music. In: AES Convention 131. Audio Engineering Society; 2011. Paper 8520. Available from: https://aes.org/publications/elibrary-page/?id=16046

@inproceedings{Gnann2011_16046,
  author = {Gnann, Volker and Kitza, Markus and Becker, Julian and Spiertz, Martin},
  title = {{Least-Squares Loal Tuning Frequency Estimation for Choir Music}},
  booktitle = {AES Convention 131},
  note = {Paper 8520},
  year = {2011},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16046}
}

TY  - CPAPER
TI  - Least-Squares Loal Tuning Frequency Estimation for Choir Music
AU  - Gnann, Volker
AU  - Kitza, Markus
AU  - Becker, Julian
AU  - Spiertz, Martin
T2  - AES Convention 131
M1  - Paper 8520
PY  - 2011
DA  - 2011/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16046
PB  - Audio Engineering Society
LA  - en
AB  - Choir conductors often have to deal with the problem that the tuning pitch of a choir tends to decrease gradually over time. For that reason, we present an algorithm which measures and displays the tuning frequency evolution for polyphonic choir music over time. Basically, it analyzes the short-time Fourier spectrogram, picks out the most important peaks, and determines their frequencies. From these frequencies, the algorithm determines the concert-A pitch that leads to the smallest least-squares error when the measured frequencies are sorted into a semitone grid. The algorithm has been implemented on the Android platform and works in real time.
ER  -