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Speaker-independent phoneme recognition on TIMIT database using integrated time-delay neural networks (TDNNs)

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2 Author(s)

A structure of neural networks (NNs) is described for speaker-independent and context-independent phoneme recognition. This structure is based on the integration of time-delay neural networks (TDNN) which have several TDNNs separated according to the duration of phonemes. As a result, the proposed structure deals with phonemes of varying duration more effectively. In the experimental evaluation of the proposed structure, 16 English vowel recognition was performed using 5268 vowel tokens picked from 480 sentences spoken by 140 speakers (98 males and 42 females) on the TIMIT (TI-MIT) database. The number of training tokens and testing tokens was 4326 from 100 speakers (69 males and 31 females) and 942 from 40 speakers (29 males and 11 females), respectively. The result was a 60.5% recognition rate (around 70% for a collapsed 13-vowel case), which was improved from 56% in the single TDNN structure, showing the effectiveness of the proposed structure's use of temporal information

Published in:

Neural Networks, 1990., 1990 IJCNN International Joint Conference on

Date of Conference:

17-21 June 1990