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KALDI语音识别工具包运行TIMIT数据库实例

WBOYOriginal: 2016-06-07 15:30:192419browse

TIMIT数据库介绍： TIMIT数据库由630个话者组成，每个人讲10句，美式英语的8种主要方言。 TIMIT S5实例：首先，将TIMIT.ISO中的TIMIT复制到主文件夹。 1.进入对应的目录，进行如下操作： zhangju@ubuntu :~$ cd kaldi-trunk/egs/timit/s5/zhangju@ubuntu :~

TIMIT数据库介绍：

TIMIT数据库由630个话者组成，每个人讲10句，美式英语的8种主要方言。

TIMIT S5实例：

首先，将TIMIT.ISO中的TIMIT复制到主文件夹。

1.进入对应的目录，进行如下操作：

zhangju@ubuntu :~$ cd kaldi-trunk/egs/timit/s5/

zhangju@ubuntu :~/kaldi-trunk/egs/timit/s5$

sudo local/timit_data_prep.sh /home/zhangju/TIMIT

会看到如下显示：

Creating coretest set.

MDAB0 MWBT0 FELC0 MTAS1 MWEW0 FPAS0 MJMP0 MLNT0 FPKT0 MLLL0 MTLS0 FJLM0 MBPM0 MKLT0 FNLP0 MCMJ0 MJDH0 FMGD0 MGRT0 MNJM0 FDHC0 MJLN0 MPAM0 FMLD0

# of utterances in coretest set = 192

Creating dev set.

FAKS0 FDAC1 FJEM0 MGWT0 MJAR0 MMDB1 MMDM2 MPDF0 FCMH0 FKMS0 MBDG0 MBWM0 MCSH0 FADG0 FDMS0 FEDW0 MGJF0 MGLB0 MRTK0 MTAA0 MTDT0 MTHC0 MWJG0 FNMR0 FREW0 FSEM0 MBNS0 MMJR0 MDLS0 MDLF0 MDVC0 MERS0 FMAH0 FDRW0 MRCS0 MRJM4 FCAL1 MMWH0 FJSJ0 MAJC0 MJSW0 MREB0 FGJD0 FJMG0 MROA0 MTEB0 MJFC0 MRJR0 FMML0 MRWS1

# of utterances in dev set = 400

Finalizing test

Finalizing dev

timit_data_prep succeeded.

于是在/home/zhangju/kaldi-trunk/egs/timit/s5文件夹下新生成data文件夹，其内包含local文件夹以及相关内容。

2.在终端输入：

local/timit_train_lms.sh data/local（下载、计算文本，用以建立语言模型）

local/timit_format_data.sh（处理与fst有关的东西）

3.创建train的mfcc：

sudo steps/make_mfcc.sh data/train exp/make_mfcc/train mfccs 4

（要对train，dev，test创建）

会看到：

Succeeded creating MFCC features for train

sudo steps/make_mfcc.sh data/test exp/make_mfcc/test mfccs 4

会看到：

Succeeded creating MFCC features for test

sudo steps/make_mfcc.sh data/dev exp/make_mfcc/dev mfccs 4

会看到：

Succeeded creating MFCC features for dev

4.训练单音素系统（monophone systom）

sudo steps/train_mono.sh data/train data/lang exp/mono

会显示：

Computing cepstral mean and variance statistics

Initializing monophone system.

Compiling training graphs

Pass 0

Pass 1

Aligning data

Pass 2

Aligning data

Pass 3

Aligning data

Pass 4

Aligning data

Pass 5

Aligning data

Pass 6

Aligning data

Pass 7

Aligning data

Pass 8

Aligning data

Pass 9

Aligning data

Pass 10

Aligning data

Pass 11

Pass 12

Aligning data

Pass 13

Pass 14

Pass 15

Aligning data

Pass 16

Pass 17

Pass 18

Pass 19

Pass 20

Aligning data

Pass 21

Pass 22

Pass 23

Pass 24

Pass 25

Aligning data

Pass 26

Pass 27

Pass 28

Pass 29

于是，新建了exp/mono文件夹

scripts/mkgraph.sh --mono data/lang exp/mono exp/mono/graph（制图）

会显示：

fsttablecompose data/lang/L.fst data/lang/G.fst

fstdeterminizestar --use-log=true

fstminimizeencoded

fstisstochastic data/lang/tmp/LG.fst

-0.000244359 -0.0912761

warning: LG not stochastic.

fstcomposecontext --context-size=1 --central-position=0 --read-disambig-syms=data/lang/tmp/disambig_phones.list --write-disambig-syms=data/lang/tmp/disambig_ilabels_1_0.list data/lang/tmp/ilabels_1_0

fstisstochastic data/lang/tmp/CLG_1_0.fst

-0.000244359 -0.0912761

warning: CLG not stochastic.

make-h-transducer --disambig-syms-out=exp/mono/graph/disambig_tid.list --transition-scale=1.0 data/lang/tmp/ilabels_1_0 exp/mono/tree exp/mono/final.mdl

fstminimizeencoded

fstdeterminizestar --use-log=true

fsttablecompose exp/mono/graph/Ha.fst data/lang/tmp/CLG_1_0.fst

fstrmsymbols exp/mono/graph/disambig_tid.list

fstrmepslocal

fstisstochastic exp/mono/graph/HCLGa.fst

0.000331581 -0.091291

HCLGa is not stochastic

add-self-loops --self-loop-scale=0.1 --reorder=true exp/mono/final.mdl

for test in dev test ; do

steps/decode_deltas.sh exp/mono data/$test data/lang exp/mono/decode_$test &

done（解码test数据集（test是*/s5/data中dev、test文件夹中的test文件夹））

终端输出结果是：[1] 2307

[2] 2308

scripts/average_wer.sh exp/mono/decode_*/wer > exp/mono/wer

会显示：

[1]- 完成 steps/decode_deltas.sh exp/mono data/$test data/lang exp/mono/decode_$test

[2]+ 完成 steps/decode_deltas.sh exp/mono data/$test data/lang exp/mono/decode_$test

7.从单音素系统中获得alignments：（分别从mono文件夹中的train,dev,test中获得）（用以训练其他系统）

steps/align_deltas.sh data/train data/lang exp/mono exp/mono_ali_train

会显示：

Computing cepstral mean and variance statistics

Aligning all training data

Done.

方法二：修改run.sh中的timit路径，但后直接运行run.sh

TIMIT S3实例

1 数据准备，输入：

local/timit_data_prep.sh  /home/zhangju/TIMIT

终端显示：

Creating coretest set.

MDAB0 MWBT0 FELC0 MTAS1 MWEW0 FPAS0 MJMP0 MLNT0 FPKT0 MLLL0 MTLS0 FJLM0 MBPM0 MKLT0 FNLP0 MCMJ0 MJDH0 FMGD0 MGRT0 MNJM0 FDHC0 MJLN0 MPAM0 FMLD0 （这是说话人的名字，前面加M，F分别表示男性和女性）

# of utterances in coretest set = 192 （核心测试集中有192句话）

Creating dev set.

# of utterances in dev set = 400 （设备集中有400句话）

Finalizing test （完成test）

Finalizing dev （完成dev）

timit_data_prep succeeded.

输入：

local/timit_train_lms.sh data/local

终端显示为

Not installing the kaldi_lm toolkit since it is already there.

（kaldi_lm工具箱里有：

compute_perplexity计算复杂度（用于对语言模型作评估，复杂度越低越好）

discount_ngrams给n阶语法模型作平滑处理（留出频率给实际会出现的但ngram中没出现的词语组合）

get_raw_ngrams（得到原始n阶语法模型）

get_word_map.pl*（得到词语的映射表）

interpolate_ngrams（补充（修改）n阶语法模型）

finalize_arpa.pl（完成arpa（arpa是一种格式，协议），是interpolate_ngrams程序中调用的）

map_words_in_arpa.pl（得到arpa格式的词语）

merge_ngrams（合并、融合n阶语法模型）

merge_ngrams_online（在线合并、融合n阶语法模型）

optimize_alpha.pl（使alpha最优化）

prune_lm.sh（删去出现频率较低的数据）

prune_ngrams（删去出现频率较低的数据）

scale_configs.pl

train_lm.sh（训练语言模型）

uniq_to_ngrams）

Creating phones file, and monophone lexicon (mapping phones to itself). （创建音子文件及单音素词典）

Creating biphone model（创建双音子模型）

Training biphone language model in folder data/local/lm （训练双音子语言模型）

Creating directory data/local/lm/biphone (创建目录data/local/lm/biphone )

Getting raw N-gram counts （）

Iteration 1/7 of optimizing discounting parameters

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.900000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.900000 phi=2.000000

discount_ngrams: for n-gram order 3, D=0.800000, tau=1.100000 phi=2.000000

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.675000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.675000 phi=2.000000

discount_ngrams: for n-gram order 3, D=0.800000, tau=0.825000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=1.215000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=1.215000 phi=2.000000

discount_ngrams: for n-gram order 3, D=0.800000, tau=1.485000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

Perplexity over 11412.000000 words is 17.013357

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.460842

real 0m0.021s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.016472

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.464985

real 0m0.020s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.021475

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.471402

real 0m0.025s

user 0m0.012s

sys 0m0.000s

optimize_alpha.pl: alpha=-2.1628504673 is too negative, limiting it to -0.5

Projected perplexity change from setting alpha=-0.5 is 17.016472->17.0106241428571, reduction of 0.00584785714286085

Alpha value on iter 1 is -0.5

Iteration 2/7 of optimizing discounting parameters

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=0.600000, tau=0.550000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=0.800000, tau=0.550000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.080000, tau=0.550000 phi=2.000000

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.018s

user 0m0.004s

sys 0m0.008s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.022s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.019s

user 0m0.008s

sys 0m0.004s

optimize_alpha.pl: objective function is not convex; returning alpha=0.7

Projected perplexity change from setting alpha=0.7 is 17.011355->17.011355, reduction of 0

Alpha value on iter 2 is 0.7

Iteration 3/7 of optimizing discounting parameters

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.412500 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.550000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.742500 phi=2.000000

interpolate_ngrams: 60 words in wordslist

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.020s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.019s

user 0m0.008s

sys 0m0.004s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.021s

user 0m0.012s

sys 0m0.000s

optimize_alpha.pl: objective function is not convex; returning alpha=0.7

Projected perplexity change from setting alpha=0.7 is 17.011355->17.011355, reduction of 0

Alpha value on iter 3 is 0.7

Iteration 4/7 of optimizing discounting parameters

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=1.750000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.000000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.350000

interpolate_ngrams: 60 words in wordslist

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.018s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.018s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.023s

user 0m0.012s

sys 0m0.000s

optimize_alpha.pl: objective function is not convex; returning alpha=0.7

Projected perplexity change from setting alpha=0.7 is 17.011355->17.011355, reduction of 0

Alpha value on iter 4 is 0.7

Iteration 5/7 of optimizing discounting parameters

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.450000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.600000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.810000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

Perplexity over 11412.000000 words is 17.008195

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.454326

real 0m0.019s

user 0m0.008s

sys 0m0.004s

Perplexity over 11412.000000 words is 17.011355

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.457880

real 0m0.019s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.018212

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.465417

real 0m0.021s

user 0m0.012s

sys 0m0.000s

optimize_alpha.pl: alpha=-0.670499383475985 is too negative, limiting it to -0.5

Projected perplexity change from setting alpha=-0.5 is 17.011355->17.0064832142857, reduction of 0.00487178571427904

Alpha value on iter 5 is -0.5

Iteration 6/7 of optimizing discounting parameters

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.337500 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.607500 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

Perplexity over 11412.000000 words is 17.008198

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.454134

real 0m0.019s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.006972

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.452861

real 0m0.020s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.006526

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.452349

real 0m0.022s

user 0m0.012s

sys 0m0.000s

Projected perplexity change from setting alpha=0.280321158690507 is 17.006972->17.0064966287094, reduction of 0.000475371290633575

Alpha value on iter 6 is 0.280321158690507

Iteration 7/7 of optimizing discounting parameters

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.576145 phi=1.750000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

interpolate_ngrams: 60 words in wordslist

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.576145 phi=2.350000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.576145 phi=2.000000

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

interpolate_ngrams: 60 words in wordslist

Perplexity over 11412.000000 words is 17.006845

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.452750

real 0m0.019s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.006575

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.452414

real 0m0.021s

user 0m0.012s

sys 0m0.000s

Perplexity over 11412.000000 words is 17.006336

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.452127

real 0m0.022s

user 0m0.012s

sys 0m0.000s

Projected perplexity change from setting alpha=0.690827338145686 is 17.006575->17.0062591109755, reduction of 0.000315889024498972

Alpha value on iter 7 is 0.690827338145686

Final config is:

D=0.4 tau=0.45 phi=2.0

D=0.3 tau=0.576144521410728 phi=2.69082733814569

D=1.36 tau=0.935 phi=2.7

Discounting N-grams.

discount_ngrams: for n-gram order 1, D=0.400000, tau=0.450000 phi=2.000000

discount_ngrams: for n-gram order 2, D=0.300000, tau=0.576145 phi=2.690827

discount_ngrams: for n-gram order 3, D=1.360000, tau=0.935000 phi=2.700000

Computing final perplexity

Building ARPA LM (perplexity computation is in background)

interpolate_ngrams: 60 words in wordslist

Perplexity over 11412.000000 words is 17.006029

Perplexity over 10833.000000 words (excluding 579.000000 OOVs) is 17.451754

17.006029

输入

local/timit_format_data.sh

终端显示：

Creating L.fst

Done creating L.fst

Creating L_disambig.fst

Done creating L_disambig.fst

Creating G.fst

arpa2fst -

\data\

Processing 1-grams

Processing 2-grams

Connected 0 states without outgoing arcs.

remove_oovs.pl: removed 0 lines.

G.fst created. How stochastic is it ?

fstisstochastic data/lang_test/G.fst

0 -0.0900995

fsttablecompose data/lang_test/L_disambig.fst data/lang_test/G.fst

How stochastic is LG.fst.

fstisstochastic data/lang_test/G.fst

0 -0.0900995

fstisstochastic

fsttablecompose data/lang/L.fst data/lang_test/G.fst

0 -0.0900994

How stochastic is LG_disambig.fst.

fsttablecompose data/lang_test/L_disambig.fst data/lang_test/G.fst

fstisstochastic

0 -0.0900994

First few lines of lexicon FST:

0 1 0.356674939

0 1 sil 1.20397282

1 2 aa AA 1.20397282

1 1 aa AA 0.356674939

1 1 ae AE 0.356674939

1 2 ae AE 1.20397282

1 1 ah AH 0.356674939

1 2 ah AH 1.20397282

1 1 ao AO 0.356674939

1 2 ao AO 1.20397282

timit_format_data succeeded.

输入：

mfccdir=mfccs

 for test in train test dev ; do

>   steps/make_mfcc.sh data/$test exp/make_mfcc/$test $mfccdir 4

> done

终端显示：

Succeeded creating MFCC features for train

Succeeded creating MFCC features for test

Succeeded creating MFCC features for dev

2 训练单音素系统，终端输入：

steps/train_mono.sh data/train data/lang exp/mono

终端显示：

Computing cepstral mean and variance statistics

Initializing monophone system.

Compiling training graphs

Pass 0

Pass 1

Aligning data

Pass 2

Aligning data

Pass 3

Aligning data

Pass 4

Aligning data

Pass 5

Aligning data

Pass 6

Aligning data

Pass 7

Aligning data

Pass 8

Aligning data

Pass 9

Aligning data

Pass 10

Aligning data

Pass 11

Pass 12

Aligning data

Pass 13

Pass 14

Pass 15

Aligning data

Pass 16

Pass 17

Pass 18

Pass 19

Pass 20

Aligning data

Pass 21

Pass 22

Pass 23

Pass 24

Pass 25

Aligning data

Pass 26

Pass 27

Pass 28

Pass 29

scripts/mkgraph.sh --mono data/lang_test exp/mono exp/mono/graph（制图）

终端显示：

fsttablecompose data/lang_test/L_disambig.fst data/lang_test/G.fst

fstminimizeencoded

fstdeterminizestar --use-log=true

fstisstochastic data/lang_test/tmp/LG.fst

0 -0.0901494

warning: LG not stochastic.

fstcomposecontext --context-size=1 --central-position=0 --read-disambig-syms=data/lang_test/tmp/disambig_phones.list --write-disambig-syms=data/lang_test/tmp/disambig_ilabels_1_0.list data/lang_test/tmp/ilabels_1_0

fstisstochastic data/lang_test/tmp/CLG_1_0.fst

0 -0.0901494

warning: CLG not stochastic.

make-h-transducer --disambig-syms-out=exp/mono/graph/disambig_tid.list --transition-scale=1.0 data/lang_test/tmp/ilabels_1_0 exp/mono/tree exp/mono/final.mdl

fsttablecompose exp/mono/graph/Ha.fst data/lang_test/tmp/CLG_1_0.fst

fstdeterminizestar --use-log=true

fstminimizeencoded

fstrmsymbols exp/mono/graph/disambig_tid.list

fstrmepslocal

fstisstochastic exp/mono/graph/HCLGa.fst

0 -0.0901494

HCLGa is not stochastic

add-self-loops --self-loop-scale=0.1 --reorder=true exp/mono/final.mdl

3 解码测试的数据集，输入

for test in dev test ; do

  steps/decode_deltas.sh exp/mono data/$test data/lang exp/mono/decode_$test &

done

终端显示：

[1] 16368

[2] 16369

3.1计算结果，输入：

scripts/average_wer.sh exp/mono/decode_*/wer > exp/mono/wer

终端显示：

[1]- 完成 steps/decode_deltas.sh exp/mono data/$test data/lang exp/mono/decode_$test

[2]+ 完成 steps/decode_deltas.sh exp/mono data/$test data/lang exp/mono/decode_$test

4 从单音素系统中获得排列

创建排列用以训练其他系统，如ANN-HMM。

输入：

steps/align_deltas.sh data/train data/lang exp/mono exp/mono_ali_train

终端显示：

Computing cepstral mean and variance statistics

Aligning all training data

Done.

steps/align_deltas.sh data/dev data/lang exp/mono exp/mono_ali_dev

方法二：修改相应的TIMIT路径之后，直接运行run.sh

TIMIT S4实例此脚本是用于构建一个音位识别器

WORKDIR=/home/zhangju/ss4（自己找个有空间的路径作为WORKDIR）

mkdir -p $WORKDIR

cp -r conf local utils steps path.sh $WORKDIR

cd $WORKDIR

. path.sh（此文件中的环境变量KALDIROOT要自己修改路径，改到自己裝的kaldi文件中。KALDIROOT=/home/mayuan/kaldi-trunk（我用nano改的。））

local/timit_data_prep.sh --config-dir=$PWD/conf --corpus-dir=/home/zhangju/TIMIT --work-dir=$WORKDIR

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