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On the STFT Inversion Redundancy
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DOI：10.1109/TCSII.2015.2482438.png)
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The inversion of the short-time Fourier transform (STFT) calculated with common windows is revisited. It has been shown that, using a commonly windowed STFT, a full signal reconstruction may be achieved from the same number of the STFT coefficients as the number of signal samples. Architectures for the redundant and the nonredundant STFT realization are presented. Inversion stability is checked through a noise analysis in the reconstruction process.
Keyword:
Gabor filters
short-time Fourier transform
signal reconstruction
spectral analysis
spectrogram
time-frequency analysis
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