[hts-users:01214] Re: WER Comparison of HTK and HTS

["Heiga ZEN (Byung Ha CHUN)" <zen@xxxxxxxxxxxxxxx>]

Hi,

Junichi Yamagishi wrote (2008/03/12 18:06):

> I compared HTS with HTK for speech recognition purpose.
> Our HTS seems to work better than (at least comparable to) HTK in the 
> recognition as well.
> These are the comparison results. For details of the condition, please 
> see the below.
>
> Single Mixture Cross-word State-Clustered Triphone HMMs
> MFCC(39)
> HTK: WORD: %Corr=86.97, Acc=80.03 [H=8947, D=215, S=1126, I=714, N=10288]
> HTS: WORD: %Corr=87.90, Acc=81.81 [H=9043, D=208, S=1037, I=626, N=10288]
>
> PLP (39)
> HTK: WORD: %Corr=93.83, Acc=92.16 [H=9653, D=165, S=470, I=172, N=10288]
> HTS: WORD: %Corr=93.86, Acc=92.20 [H=9656, D=169, S=463, I=170, N=10288]
>
> 6 Mixtures Cross-word State-Clustered Triphone HMMs
> MFCC(39)
> HTK: WORD: %Corr=93.96, Acc=90.41 [H=9667, D=88, S=533, I=366, N=10288]
> HTS: WORD: %Corr=93.97, Acc=90.73 [H=9668, D=87, S=533, I=334, N=10288]
>
> PLP(39)
> HTK: WORD: %Corr=96.42, Acc=95.39 [H=9920, D=75, S=293, I=106, N=10288]
> HTS: WORD: %Corr=96.58, Acc=95.47 [H=9936, D=74, S=278, I=114, N=10288]

Can you tell us the total numbers of leaf nodes in your phonetic decision trees built by HTK and HTS?
I expect that this difference was caused by modifications in tree-based clustering part.

Regards,

Heiga ZEN (Byung Ha CHUN)

--
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Heiga ZEN     (in Japanese pronunciation)
Byung Ha CHUN (in Korean pronunciation)

Department of Computer Science and Engineering
Nagoya Institute of Technology
Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan

http://www.sp.nitech.ac.jp/~zen
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