We present an algorithm for sound analysis and re-synthesis with local automatic adaptation of time-frequency resolution. The reconstruction formula we propose is highly efficient, and gives a good approximation of the original signal from analyses with different time-varying resolutions within complementary frequency bands: this is a typical case where perfect reconstruction cannot in general be achieved with fast algorithms, which provides an error to be minimized. We provide a theoretical upper bound for the reconstruction error of our method, and an example of automatic adaptive analysis and re-synthesis of a music sound.
|Autori:||Liuni, M; Röbel, A; Matusiak, E; Romito, Marco; Rodet, X.|
|Titolo:||Automatic Adaptation of the Time-Frequency Resolution for Sound Analysis and Re-Synthesis|
|Anno del prodotto:||2013|
|Digital Object Identifier (DOI):||10.1109/TASL.2013.2239989|
|Appare nelle tipologie:||1.1 Articolo in rivista|