1. 專題進度報告
資工四 B 洪志豪
資工四 B 林宜鴻

2. Flow chart

3. Language Model 1.Normalize(UTF-8) -> normalize_utf8
2.From UTF-8 to Big5 -> iconv
3.parse according to dictory -> textSegment
4.Build language model -> ngram-count

4. Acoustic Model - HERest
1.meaning：Adjust HMM model
2.command:
HERest –C herest.cfg –S train.scp
–L /share/data/TrainingLabel –H hmmset.mmf rcd.lst
3.Run more can get higher accuracy

5. Combine Acoustic and Language Model(1) pre-requirement
1.change the bigram.lm from Big5 to ascii
2.command：
/share/program/big52ascii/chenc bigram_Big5.lm > bigram_ascii.lm
3.replace <s> with !=ENTER
</s>with !=EXIT
A useful command to replace:
->:1,$ s/<s>/!ENTER/g
:1,$ s/<\/s>/!EXIT/g

6. Combine Acoustic and Language Model(2) HBuild
1.meaning：change the SRILM form to HTK network form
2.command：
HBuild –n bigram_ascii.lm htkword.dic wd_net
3.htkword.dic is the relation between work and pronunciation EX:[B7C2] k_e e
4.wd_net is that word_net that we need
EX:I=9996 W=[A64C][C3D2]
J= S=9551 E=2135 l=-7.52

7. Combine Acoustic and Language Model(3) HBuild(Cond.) - Questions
htkword.dic has no word that corresponds to <unk>
<sol>: don’t add flag –u when training language
model, but is it appropriate?

8. Decode-HVite(1) 1.meaning：decode testing corpus 2.command：
HVite –t 250 –H hmmset.mmf –S testing.scp –C hvite.cfg
–w wd_net -i result.mlf –p 0.0 –s 0.0 htkword.dic rcd.lst
3.result is in result.mlf
EX： !ENTER
[B37D]

9. Decode-HVite(2) - Questions
If we use HERest to train hmmset.mmf with phone.lst，it will error：
->cannot load file n_o
<sol>:use rcd.lst instead

10. Divide Mixtures by HHEd
But hmmset.mmf given by TA already has 32 mixtures for each state
What config to use?
Old DSP hw: the same as what HERest use
My trail: it can run without config

11. Initailize Acoustic Model
2 methods for 2 different conditions
With labels: use HInit and HRest
Without labels: use HCompV
Both of them has a similar question

12. Reference 1.HTK_Book.pdf 2.SpeechProject2007Winter.ppt
3.dsp_hw1.ppt(2006_spring_DSP)
4.HTK_Training.pdf
5.SpeechProj board in ptt2