The Time-Frequency Resolution of Short Time Fourier Transform Based on Multi-Window Functions

Abstract:

The short-time Fourier transform has the disadvantage that is does not localize time and frequency phenomena very well. Instead the time-frequency information is scattered which depends on the length of the window. It is not possible to have arbitrarily good time resolution simultaneously with good frequency resolution. In this paper, a new method that uses the short-time Fourier transform based on multi-window functions to enhance time-frequency resolution of signals has been proposed. Simulation and experimental results present the high performance of the proposed method.

• Periodical: Advanced Materials Research (Volume 214)
• Pages: 122-127
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.214.122
• Online since: February 2011
• Authors: Li Hua Wang, Qi Dong Zhang, Yong Hong Zhang, Kai Zhang
• Keywords: Multi-Window Function, Short Time Fourier Transform (STFT), Time-Frequency Resolution

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