Adapted Bases of Time-frequency Local Cosines
نویسنده
چکیده
We develop and analyze a best basis algorithm for orthonormal bases of local cosines which satisfy a uniform bound on their time-frequency concentration. All waveforms are obtained from three elementary window functions by shifts, rescaling, and modulation. For a discrete signal of length N, the complexity is of order N(logN) 2 .
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تاریخ انتشار 1999