apply-cmvn-sliding.cc File Reference

#include "base/kaldi-common.h"
#include "util/common-utils.h"
#include "matrix/kaldi-matrix.h"
#include "feat/feature-functions.h"

Include dependency graph for apply-cmvn-sliding.cc:

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Functions
int	main (int argc, char *argv[])

Function Documentation

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 26 of file apply-cmvn-sliding.cc.

References SequentialTableReader< Holder >::Done(), ParseOptions::GetArg(), KALDI_LOG, KALDI_WARN, SequentialTableReader< Holder >::Key(), kaldi::kUndefined, SequentialTableReader< Holder >::Next(), SlidingWindowCmnOptions::normalize_variance, ParseOptions::NumArgs(), ParseOptions::PrintUsage(), ParseOptions::Read(), SlidingWindowCmnOptions::Register(), kaldi::SlidingWindowCmn(), SequentialTableReader< Holder >::Value(), and TableWriter< Holder >::Write().

                                 {
  try {
    using namespace kaldi;
    using kaldi::int32;

    const char *usage =
        "Apply sliding-window cepstral mean (and optionally variance)\n"
        "normalization per utterance.  If center == true, window is centered\n"
        "on frame being normalized; otherwise it precedes it in time.\n"
        "Useful for speaker-id; see also apply-cmvn-online\n"
        "\n"
        "Usage: apply-cmvn-sliding [options] <feats-rspecifier> <feats-wspecifier>\n";

    ParseOptions po(usage);
    SlidingWindowCmnOptions opts;
    opts.Register(&po);

    po.Read(argc, argv);

    if (po.NumArgs() != 2) {
      po.PrintUsage();
      exit(1);
    }

    int32 num_done = 0, num_err = 0;

    std::string feat_rspecifier = po.GetArg(1);
    std::string feat_wspecifier = po.GetArg(2);

    SequentialBaseFloatMatrixReader feat_reader(feat_rspecifier);
    BaseFloatMatrixWriter feat_writer(feat_wspecifier);

    for (;!feat_reader.Done(); feat_reader.Next()) {
      std::string utt = feat_reader.Key();
      Matrix<BaseFloat> feat(feat_reader.Value());
      if (feat.NumRows() == 0) {
        KALDI_WARN << "Empty feature matrix for utterance " << utt;
        num_err++;
        continue;
      }
      Matrix<BaseFloat> cmvn_feat(feat.NumRows(),
                                  feat.NumCols(), kUndefined);

      SlidingWindowCmn(opts, feat, &cmvn_feat);

      feat_writer.Write(utt, cmvn_feat);
      num_done++;
    }

    KALDI_LOG << "Applied sliding-window cepstral mean "
              << (opts.normalize_variance ? "and variance " : "")
              << "normalization to " << num_done << " utterances, "
              << num_err << " had errors.";
    return (num_done != 0 ? 0 : 1);
  } catch(const std::exception &e) {
    std::cerr << e.what();
    return -1;
  }
}