Title :
Improved resolution short time Fourier transform
Author :
Khan, Nabeel Ali ; Jafri, M. Noman ; Qazi, Saad A.
Author_Institution :
Dept. Electr. Eng., Fed. Urdu Univ., Islamabad, Pakistan
Abstract :
Short time Fourier transform is simple and yet effective tool for computing time frequency representations. However, its performance greatly depends upon shape and size of window employed. Longer windows give good frequency resolution while shorter windows give good time resolution. In this paper, we present a novel method to improve the resolution of short time Fourier transform by combining short time Fourier transforms of different window lengths.
Keywords :
Fourier transforms; signal representation; signal resolution; time-frequency analysis; frequency resolution; short time Fourier transform resolution; time frequency representation; time resolution; Chirp; Electrical engineering; Fourier transforms; Frequency modulation; Signal resolution; Spectrogram; Time frequency analysis;
Conference_Titel :
Emerging Technologies (ICET), 2011 7th International Conference on
Conference_Location :
Islamabad
Print_ISBN :
978-1-4577-0769-8
DOI :
10.1109/ICET.2011.6048476
