splice-feats.cc
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// featbin/splice-feats.cc
// Copyright 2009-2011 Microsoft Corporation
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#include "base/kaldi-common.h"
#include "util/common-utils.h"
#include "matrix/kaldi-matrix.h"
#include "feat/feature-functions.h"
int main(int argc, char *argv[]) {
try {
using namespace kaldi;
const char *usage =
"Splice features with left and right context (e.g. prior to LDA)\n"
"Usage: splice-feats [options] <feature-rspecifier> <feature-wspecifier>\n"
"e.g.: splice-feats scp:feats.scp ark:-\n";
ParseOptions po(usage);
int32 left_context = 4, right_context = 4;
po.Register("left-context", &left_context, "Number of frames of left context");
po.Register("right-context", &right_context, "Number of frames of right context");
po.Read(argc, argv);
if (po.NumArgs() != 2) {
po.PrintUsage();
exit(1);
}
std::string rspecifier = po.GetArg(1);
std::string wspecifier = po.GetArg(2);
BaseFloatMatrixWriter kaldi_writer(wspecifier);
SequentialBaseFloatMatrixReader kaldi_reader(rspecifier);
for (; !kaldi_reader.Done(); kaldi_reader.Next()) {
Matrix<BaseFloat> spliced;
SpliceFrames(kaldi_reader.Value(),
left_context,
right_context,
&spliced);
kaldi_writer.Write(kaldi_reader.Key(), spliced);
}
return 0;
} catch(const std::exception &e) {
std::cerr << e.what();
return -1;
}
}