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About: Log-spectral distance     Goto   Sponge   NotDistinct   Permalink

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The log-spectral distance (LSD), also referred to as log-spectral distortion or root mean square log-spectral distance, is a distance measure(expressed in dB) between two spectra. The log-spectral distance between spectra and is defined as: where and are power spectra.Unlike the Itakura–Saito distance, the log-spectral distance is symmetric.