Pitch Estimation by Enhanced Super Resolution determinator

A second normalized cross correlation coefficient the

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Unformatted text preview: assified as `voiced' which has a T p n > Determined the second normalized cross` a correlation coefficient p n x,y srfd y,z B C n +L p y,z n ` a j=1 fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff vwwww wwwC www www = uB B C n +L n +L u b c2 b c2 u X t X y jL A z jL j=1 j=1 X y jL A jL z b c b c Candidate score for p y,z n ` a Candidates for p y,z n exceeds the threshold T srfd ` a are given a score of 2, others are 1. If there are 1 or more candidates with a score of 2 in a frame, then all those candidates with a score of 1 are removed from the list of candidates. If there is only one candidate (with score 1 or 2), the candidate is assumed to be the best estimate of the fundamental period of that frame. Otherwise, an optimal fundamental period is sought from the ` a set of remaining candidates , calculated the coefficient of q n m each candidate. nM wwwwwwwwwwwwwwwwwwwwwwww wwwwwwwwwwwwwwwwwww www www wwwwwwwwwwwwww wwwww w wwwwwwwwwwwwww wwwww w w w w www www n ww w w w w q nm = vwwwwwwwwwwwwwwwwwwwwwwwwwww u nM b c2 M b c2 u X s j + nm t X s j @n M A j=1 j=1 ` a j=1 fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff X s j @n M A j + nm s b c b c The first coefficient a is assumed to be the optimal value. If ` q n m * 0.77 > the current optimal value , the the subsequent a ` q n m is the optimal value....
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