Yannick Estève / ONTRAC-Kaldi

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egs/rm/s5/local/run_vtln.sh 2.31 KB
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8dcb6dfcb   Yannick Estève   first commit 
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  #!/bin/bash
  
  # This scripts tests the VTLN estimation where the system used to get the
  # VTLN warps is based on delta+delta-deltas.
  # see also run_vtln2.sh where the system uses LDA+MLLT instead.
  
  . ./cmd.sh
  featdir=mfcc
  set -e
  
  # train linear vtln
  steps/train_lvtln.sh --cmd "$train_cmd" 1800 9000 \
    data/train data/lang exp/tri2a exp/tri3d
  mkdir -p data/train_vtln
  cp data/train/* data/train_vtln || true
  cp exp/tri3d/final.warp data/train_vtln/spk2warp
  steps/make_mfcc.sh --nj 8 --cmd "run.pl" data/train_vtln exp/make_mfcc/train_vtln $featdir  
  steps/compute_cmvn_stats.sh data/train_vtln exp/make_mfcc/train_vtln $featdir  
   utils/mkgraph.sh data/lang exp/tri3d exp/tri3d/graph
  steps/decode_lvtln.sh --config conf/decode.config --nj 20 --cmd "$decode_cmd" \
    exp/tri3d/graph data/test exp/tri3d/decode
  
  mkdir -p data/test_vtln
  cp data/test/* data/test_vtln || true
  cp exp/tri3d/decode/final.warp data/test_vtln/spk2warp
  steps/make_mfcc.sh --nj 8 --cmd "run.pl" data/test_vtln exp/make_mfcc/test_vtln $featdir  
  steps/compute_cmvn_stats.sh data/test_vtln exp/make_mfcc/test_vtln $featdir  
  
  (
   steps/train_lda_mllt.sh --cmd "$train_cmd" \
     --splice-opts "--left-context=3 --right-context=3" \
    1800 9000 data/train_vtln data/lang exp/tri3d exp/tri4d
   utils/mkgraph.sh data/lang exp/tri4d exp/tri4d/graph
  
   steps/decode.sh --config conf/decode.config --nj 20 --cmd "$decode_cmd" \
      exp/tri4d/graph data/test_vtln exp/tri4d/decode
  
   steps/train_sat.sh 1800 9000 data/train_vtln data/lang exp/tri4d exp/tri5d
   utils/mkgraph.sh data/lang exp/tri5d exp/tri5d/graph 
   steps/decode_fmllr.sh --config conf/decode.config --nj 20 --cmd "$decode_cmd" \
     exp/tri5d/graph data/test_vtln exp/tri5d/decode 
  
   utils/mkgraph.sh data/lang_ug exp/tri5d exp/tri5d/graph_ug
   steps/decode_fmllr.sh --config conf/decode.config --nj 20 --cmd "$decode_cmd" \
     exp/tri5d/graph_ug data/test_vtln exp/tri5d/decode_ug
  )
  
  # Baseline with no VTLN:
  #%WER 1.84 [ 231 / 12533, 30 ins, 46 del, 155 sub ] exp/tri3b/decode/wer_4
  #%WER 10.27 [ 1287 / 12533, 126 ins, 204 del, 957 sub ] exp/tri3b/decode_ug/wer_13
  
  # With VTLN:
  #%WER 2.03 [ 255 / 12533, 30 ins, 49 del, 176 sub ] exp/tri5d/decode/wer_4
  #%WER 10.38 [ 1301 / 12533, 128 ins, 214 del, 959 sub ] exp/tri5d/decode_ug/wer_13
  
  # :-( seems a bit worse.  Last time it was better.  Anyway this setup
  # is too small to be really sure.