Using optimal transport for estimating inharmonic pitch signals
| Autor: | Stefan Ingi Adalbjörnsson, Johan Karlsson, Filip Elvander, Andreas Jakobsson |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Signal processing
Mathematical optimization Audio signal Linear programming 020206 networking & telecommunications 02 engineering and technology Time–frequency analysis Harmonic analysis 030507 speech-language pathology & audiology 03 medical and health sciences Harmonics Inharmonicity 0202 electrical engineering electronic engineering information engineering A priori and a posteriori 0305 other medical science Algorithm Mathematics |
| Zdroj: | ICASSP |
| DOI: | 10.1109/icassp.2017.7952172 |
| Popis: | In this work, we propose a novel multi-pitch estimation technique that is robust with respect to the inharmonicity commonly occurring in many applications. The method does not require any a priori knowledge of the number of signal sources, the number of harmonics of each source, nor the structure or scope of any possibly occurring inharmonicity. Formulated as a minimum transport distance problem, the proposed method finds an estimate of the present pitches by mapping any found spectral line to the closest harmonic structure. The resulting optimization is a convex and highly tractable linear programming problem. The preferable performance of the proposed method is illustrated using both simulated and real audio signals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|