add-deltas-sdc.cc
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// featbin/add-deltas-sdc.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 "feat/feature-functions.h"
#include "matrix/kaldi-matrix.h"
int main(int argc, char *argv[]) {
try {
using namespace kaldi;
const char *usage =
"Add shifted delta cepstra (typically to raw mfcc or plp features\n"
"Usage: add-deltas-sdc [options] in-rspecifier out-wspecifier\n";
ShiftedDeltaFeaturesOptions opts;
int32 truncate = 0;
ParseOptions po(usage);
po.Register("truncate", &truncate, "If nonzero, first truncate features to this dimension.");
opts.Register(&po);
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 feat_writer(wspecifier);
SequentialBaseFloatMatrixReader feat_reader(rspecifier);
for (; !feat_reader.Done(); feat_reader.Next()) {
std::string key = feat_reader.Key();
const Matrix<BaseFloat> &feats = feat_reader.Value();
if (feats.NumRows() == 0) {
KALDI_WARN << "Empty feature matrix for key " << key;
continue;
}
Matrix<BaseFloat> new_feats;
if (truncate != 0) {
if (truncate > feats.NumCols())
KALDI_ERR << "Cannot truncate features as dimension " << feats.NumCols()
<< " is smaller than truncation dimension.";
SubMatrix<BaseFloat> feats_sub(feats, 0, feats.NumRows(), 0, truncate);
ComputeShiftedDeltas(opts, feats_sub, &new_feats);
} else
ComputeShiftedDeltas(opts, feats, &new_feats);
feat_writer.Write(key, new_feats);
}
return 0;
} catch(const std::exception &e) {
std::cerr << e.what();
return -1;
}
}