Short-time fourier transform: two fundamental properties and an optimal implementation
نویسندگان
چکیده
منابع مشابه
Short-time Fourier transform: two fundamental properties and an optimal implementation
Shift and rotation invariance properties of linear time-frequency representations are investigated. It is shown that among all linear time-frequency representations, only the short-time Fourier transform (STFT) family with the Hermite–Gaussian kernels satisfies both the shift invariance and rotation invariance properties that are satisfied by the Wigner distribution (WD). By extending the time-...
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During the last two decades, Maximum Likelihood estimation (ML) has been used to determine Direction Of Arrival (DOA) and signals propagated by the sources, using narrowband array signals. The algorithm fails in the case of wideband signals. As an attempt by the present study to overcome the problem, the array outputs are transformed into narrowband frequency bins, using short time Fourier tran...
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ژورنال
عنوان ژورنال: IEEE Transactions on Signal Processing
سال: 2003
ISSN: 1053-587X
DOI: 10.1109/tsp.2003.810293