Le Traitement Digital des Signaux Acoustiques
Mots-clés :
acoustic signal processing, digital signals, numerical analysis, acoustic signals, deleterious effects, non-stationary signals, real time spectrum analysis, zoomingRésumé
Le traitement numérique des signaux acoustiques est étudié sous une approche globale permettant d'identifier les lacunes et les avantages des différentes approches possibles. Des solutions sont proposées en ce qui a trait aux différentes étapes de l'acquisition et du traitement des données. On insiste sur les effets nocifs de la non-stationnarité des signaux et leurs conséquences lors de l'analyse fréquentielle dite en temps réel. La manipulation de la phase et les techniques du zoom font l'objet d'un développement particulier. Tous les aspects concernant l'analyse numérique multicanale seront traités dans un autre article.
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