How to do onilne decoding after triphone training?

[achintyaha]

Hi,

I have successfully trained monophones and triphones. I am also able to get decoding result.
Now I am looking to do online decoding (provide only audio and get the transcription results)

Right now I can only find onlline decoding methods using nnet, so is that the only way and if yes, can that be done on a local machine (Macbook air laptop)?

Data size:

Approximately 60 hrs.

Link I followed:

https://groups.google.com/forum/#!searchin/kaldi-help/online_cmvn.conf%7Csort:date/kaldi-help/X4bfIXWsVeU/C8fhvCE7BwAJ

https://www.eleanorchodroff.com/tutorial/kaldi/training-acoustic-models.html#triphone-training-and-alignment

Steps I used so far:

x=data/train

mfccdir=mfcc

steps/make_mfcc.sh --cmd run.pl $x exp/make_mfcc/$x $mfccdir

steps/compute_cmvn_stats.sh $x exp/make_mfcc/$x $mfccdir

steps/train_mono.sh --boost-silence 1.25 --cmd "run.pl" data/train data/lang exp/mono

steps/align_si.sh --boost-silence 1.25 --cmd "run.pl" data/train data/lang exp/mono exp/mono_ali

steps/train_deltas.sh --boost-silence 1.25 --cmd "run.pl" 2000 10000 data/train data/lang exp/mono_ali exp/tri1

steps/align_si.sh --cmd "run.pl" data/train data/lang exp/tri1 exp/tri1_ali

steps/train_lda_mllt.sh --cmd "run.pl" --splice-opts "--left-context=3 --right-context=3" 2500 15000 data/train data/lang exp/tri1_ali exp/tri2a

steps/align_si.sh --cmd "run.pl" --use-graphs true data/train data/lang exp/tri2a exp/tri2a_ali

steps/train_sat.sh --cmd "run.pl" 2500 15000 data/train data/lang exp/tri2a_ali exp/tri3a

steps/align_fmllr.sh --cmd "run.pl" data/train data/lang exp/tri3a exp/tri3a_ali

steps/train_sat.sh --cmd "run.pl" 4200 40000 data/train data/lang exp/tri3a_ali exp/tri4a

steps/align_fmllr.sh --cmd "run.pl" data/train data/lang exp/tri4a exp/tri4a_ali

utils/mkgraph.sh data/lang exp/tri4a exp/tri4a/graph || exit 1

steps/online/prepare_online_decoding.sh data/train data/lang exp/tri4a exp/tri4a_online

Next suggested steps:

steps/online/nnet2/train_diag_ubm.sh data/train 1024 exp/tri4b exp/diag_ubm

steps/online/nnet2/train_ivector_extractor.sh data/train exp/diag_ubm exp/extractor

steps/online/nnet2/extract_ivectors_online.sh data/train exp/extractor exp/ivectors_train

[Daniel Povey]

No you can't do that kind of thing on a mac laptop, you need a server with GPU(s).

It is possible to do online decoding with GMMs though.

See, for example,

egs/rm/s5/local/online/run_gmm.sh

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