Automatic Adaptation of the Time-Frequency Resolution for Sound Analysis and Re-Synthesis

作者：Liuni Marco^*; Roebel Axel; Matusiak Ewa; Romito Marco; Rodet Xavier

来源：IEEE Transactions on Audio Speech and Language Processing, 2013, 21(5): 959-970.

DOI：10.1109/TASL.2013.2239989

• Automatic adaptivity
• Gabor frames
• sparsity
• spectral processing

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.

• 出版日期2013-5