Kaldi Python IO
A python (3.6+) wrapper for Kaldi's data accessing.
Support Type
Kaldi's binary archives (*.ark)
Kaldi's scripts (alignments & features, *.scp)
Kaldi nnet3 data examples in binary (*.egs)
Install
python setup.py install
or pip install kaldi-python-io
Usage
ArchiveReader && AlignArchiveReader
# allow only sequential indexark_reader = ArchiveReader("copy-feats ark:foo.ark ark:- |")for key, _ in ark_reader: print(key)
ali_reader = AlignArchiveReader("gunzip -c foo.ali.gz |")for key, _ in ark_reader: print(key)
Nnet3EgsReader
# allow only sequential indexegs_reader = Nnet3EgsReader("foo.egs")for key, _ in egs_reader: print(key)
ArchiveWriter
with ArchiveWriter("foo.ark", "foo.scp") as writer: for i in range(10):
mat = np.random.rand(100, 20)
writer.write(f"mat-{i}", mat)
ScriptReader && AlignScriptReader
# allow sequential/random indexscp_reader = ScriptReader("shuf foo.scp | head -n 2")for key, mat in scp_reader: print(f"{key}: {mat.shape}")
ali_reader = AlignScriptReader("foo.ali.scp")for key, ali in ali_reader: print(f"{key}: {ali.shape}")