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Audiovizualizacija

Audiovizualizacija. Mladen Geng Stevan Grubić Davor Ivanković. Audiovizualizacija. audiosignal povezan s videosignalom statistička svojstva zvučnog signala frekvencijska i dinamička svojstva signala procjena spektralne gustoće snage. Procjena SGS - metode. parametarske model procesa

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Audiovizualizacija

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  1. Audiovizualizacija Mladen Geng Stevan Grubić Davor Ivanković

  2. Audiovizualizacija • audiosignal povezan s videosignalom • statistička svojstva zvučnog signala • frekvencijska i dinamička svojstva signala • procjena spektralne gustoće snage

  3. Procjena SGS - metode • parametarske • model procesa • a priori znanja o procesu • neparametarske • obrada samog signala • bez a priori znanja o procesu

  4. Rješenje • SGS pomoću periodograma • pseudostacionarnost procesa • obrada blokova signala ~ 30ms

  5. Modificirani periodogram • neparametarska metoda • procjena autokorelacijske funkcije • pseudostacionarnost – vremenski otvor

  6. Realizacija • estimacija spektralne gustoće snage • ekstrakcija značajki • površina periodograma • “najjača” frekvencija • sinusoida • Psin(MAXx)

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