High- Resolution Robust Multipitch Analysis of Guitar Chords

Bonnet L, Lefebvre R. High- Resolution Robust Multipitch Analysis of Guitar Chords. In: AES Convention 114. Audio Engineering Society; 2003. Paper 5772. Available from: https://aes.org/publications/elibrary-page/?id=12566

@inproceedings{Bonnet2003_12566,
  author = {Bonnet, Laurent and Lefebvre, Roch},
  title = {{High- Resolution Robust Multipitch Analysis of Guitar Chords}},
  booktitle = {AES Convention 114},
  note = {Paper 5772},
  year = {2003},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12566}
}

TY  - CPAPER
TI  - High- Resolution Robust Multipitch Analysis of Guitar Chords
AU  - Bonnet, Laurent
AU  - Lefebvre, Roch
T2  - AES Convention 114
M1  - Paper 5772
PY  - 2003
DA  - 2003/03/06
UR  - https://aes.org/publications/elibrary-page/?id=12566
PB  - Audio Engineering Society
LA  - en
AB  - An algorithm capable of extracting multipitch information from a guitar sound is described. The method is based on a two-stage approach. First, the sound signal is segmented in time based on the derivative of the signal envelope. This defines the transients between successive chords. In the second stage, a high resolution FFT is applied to a downsampled version of the signal. This yields a frequency resolution of about 1 Hz, using 1 second time support. An iterative procedure, employing frequency-bins interpolation, is applied to the amplitude spectrum to estimate the possible fundamental frequencies or harmonics. The system has been tested with simulated signals and achieves reliable fundamental frequency detection. With real guitar chords, the performance of the algorithm depends on the harmonic complexity of the sound.
ER  -