Computational efficient real-time capable constant-Q spectrum analyzer

Holzmüller F, Bereuter P, Merz P, Rudrich D, Sontacchi A. Computational efficient real-time capable constant-Q spectrum analyzer. In: AES Convention 148. Audio Engineering Society; 2020. Paper 567. Available from: https://aes.org/publications/elibrary-page/?id=20805

@inproceedings{Holzmuller2020_20805,
  author = {Holzmüller, Felix and Bereuter, Paul and Merz, Philipp and Rudrich, Daniel and Sontacchi, Alois},
  title = {{Computational efficient real-time capable constant-Q spectrum analyzer}},
  booktitle = {AES Convention 148},
  note = {Paper 567},
  year = {2020},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20805}
}

TY  - CPAPER
TI  - Computational efficient real-time capable constant-Q spectrum analyzer
AU  - Holzmüller, Felix
AU  - Bereuter, Paul
AU  - Merz, Philipp
AU  - Rudrich, Daniel
AU  - Sontacchi, Alois
T2  - AES Convention 148
M1  - Paper 567
PY  - 2020
DA  - 2020/05/06
UR  - https://aes.org/publications/elibrary-page/?id=20805
PB  - Audio Engineering Society
LA  - en
AB  - The constant-Q transform (CQT) is a valuable tool for music information retrieval, e.g. for chroma calculation and harmonic analysis. In this E-Brief, we propose a block based, real-time capable, efficient analysis algorithm resting upon a subsampling technique performed with fast Fourier transform. In addition, advanced features such as time resolution enhancement towards lower frequencies and a robust CQT-based tuner are presented. Finally a reference-implementation in C++ in form of a VST3-Plugin is introduced. The plugin's source code will be available openly for further development.
ER  -