Choi-Williams time-frequency representation of acoustic signals

Autor:	ELHANAOUI, ABDELKADER, AASSIF, EL HOUCEIN, Maze, Gerard
Přispěvatelé:	Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU), Société Française d'Acoustique, System, HAL
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph] Thin aluminum tubes Choi-Williams acoustic signals time-frequency representations
Zdroj:	Acoustics 2012 Nantes Acoustics 2012 Acoustics 2012, Apr 2012, Nantes, France
Popis:	International audience; This work concerns the study of acoustic signals that are backscattered by thin aluminum tubes. This study is done with the help of Choi-Williams time-frequency method by virtue of its interesting properties. This technique was chosen because it reduces the amplitude of the interferences. This can make the interpretation of time-frequency image easier. However, the resolution of time-frequency image is acceptable if the involved parameter is well chosen. As a result, the determination of longitudinal and transverse velocities of aluminum from Choi-Williams time-frequency technique reveals a good agreement with the theoretical method of proper modes as mentioned in scientific literature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2f179f6a56f95dba1a28552c3be9b6f5 https://hal.archives-ouvertes.fr/hal-00810948/document Zobrazit plný text záznamu