Title :
Quadratic Function Based Frequency Warping Method
Author :
Honghai, Wang ; Gang, Liu ; Jun, Guo
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
A new quadratic warping function is proposed with the intention to compensate for the disadvantages with traditional frequency warping functions. The quadratic curve is determined by frequency starting/ending point as well as the inflexion point which can be determined through grid search or variable step search. Application of this new frequency warping method in ALID reveals that the new quadratic warping function outperforms linear function and piecewise linear function in decreasing recognition error rate.
Keywords :
speaker recognition; frequency warping method; grid search; inflexion point; piecewise linear function; quadratic curve; quadratic warping function; variable step search; Chromium; Error analysis; Frequency estimation; Maximum likelihood estimation; Natural languages; Pattern recognition; Piecewise linear techniques; Telecommunication control; Automatic Language Identification (ALID); Frequency Warping Function; Speaker Normalization; Warping Factor;
Conference_Titel :
Control Conference, 2007. CCC 2007. Chinese
Conference_Location :
Hunan
Print_ISBN :
978-7-81124-055-9
Electronic_ISBN :
978-7-900719-22-5
DOI :
10.1109/CHICC.2006.4347079
