Phase initialization schemes for faster spectrogram-consistency- based signal reconstruction
نویسندگان
چکیده
In previous contributions [1, 2], we presented a fast algorithm for the reconstruction of a time-domain signal from a magnitude short-time Fourier transform (STFT) spectrogram, and showed experimentally that it could lead to substantial reduction in computation time compared to previous work by Griffin and Lim [3] when both algorithms are initialized using zero phase. We study here other strategies for phase initialization, compare the performance of our method with the state-of-the-art RTISI-LA algorithm [4], and consider several extensions and combinations of the two approaches.
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