The paper presents improved method of time-frequency (TF) analysis of discrete-time signals. The method involves signal's local group delay (LGD) and channelized instantaneous frequency (CIF) to purposely redistribute all Short-time Fourier transform (STFT) lines. Additionally, the energy concentration index (ECI) and some histogram-like statistics are used to evaluate readability of estimated TF distributions of the energy. Recorded acoustic signals such as sound of the Stradivarius violin, a humpback whale song and a theoretical signals such as impulse response of a rigid and tungsten carbide sphere confined in water are employed to test the novel approach.
Autorzy
Informacje dodatkowe
- Kategoria
- Aktywność konferencyjna
- Typ
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Rok wydania
- 2011
Źródło danych: MOSTWiedzy.pl - publikacja "Time-frequency analysis of acoustic signals using concentrated spectrogram" link otwiera się w nowej karcie
