Szczegóły publikacji
Opis bibliograficzny
Acoustic signal expansion in multiple trigonometric bases / P. KLECZKOWSKI // Acta Acustica united with Acustica ; ISSN 1610-1928. — 2002 — vol. 88 no. 4, s. 526–535. — Bibliogr. s. 534–535, Summ.
Autor
Dane bibliometryczne
| ID BaDAP | 11157 |
|---|---|
| Data dodania do BaDAP | 2002-12-12 |
| Rok publikacji | 2002 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Acta Acustica united with Acustica |
Abstract
A method of time-frequency analysis of the acoustic signals is presented. It is conceptually and computationally simple and its parameters are easily adjustable. By an appropriate adjustment of its time-frequency parameters it is possible to achieve characteristics approximating those of the auditory system. This is a very desirable feature when signals received by the ear are analysed. The method proposed also approximates an orthogonal expansion system, with easy near-perfect invertibility as a main advantage. It involves bandpass filtering of the signal and then performing independent analyses of bandpass signals in orthogonal trigonometric expansion bases. The results can be combined into one consistent data-base. An efficient two-dimensional graphic presentation of the results, revealing details relevant to the ear has been achieved with this method. Several examples of analyses for music and speech signals are presented.
