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2008 International Conference on Multimedia and Ubiquitous Engineering (mue 2008)
Speaker Independent Phoneme Recognition Based on Fisher Weight Map
April 24-April 26
ISBN: 978-0-7695-3134-2
We have already proposed a new feature extraction method based on higher-order local auto-correlation and Fisher weight map (FWM) at Interspeech 2006. This papershows effectiveness of the proposed FWM in speaker dependent and speaker independent phoneme recognition. Widely used MFCC features lack temporal dynamics. To solve this problem, local auto-correlation features are computed and accumulated by weighting high scores on the discriminative areas. This score map is called Fisher weight map. From the speaker dependent phoneme recognition, the proposed FWM showed 79.5% recognition rate, by 5.0 points higher than the result by MFCC. Further more by combing FWM with MFCC and delta-MFCC, the recognition rate improved to 88.3%. In the speaker independent phoneme recognition, it showed 84.2% recognition rate, by 11.0 points higher than the result by MFCC. By combining FWM with MFCC and delta-MFCC, the recognition rate improved to 89.0%.
Index Terms:
Fisher weight map, Local auto-correlation feature, Local feature, Phoneme recognition
Citation:
Takashi Muroi, Tetsuya Takiguchi, Yasuo Ariki, "Speaker Independent Phoneme Recognition Based on Fisher Weight Map," mue, pp.253-257, 2008 International Conference on Multimedia and Ubiquitous Engineering (mue 2008), 2008
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