| http://www.w3.org/ns/prov#value | - If the NSR value is larger than a predetermined threshold, such as 0.3, that is if an error is larger, for a given band, it may be assumed that approximation of |S(j)| by |Am ||E(j)| for the band is not good, that is that the excitation signal |E(j)| is inappropriate as the fundamental, signal, so that the band is decided to be unvoiced (UV).
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