Blame view
src/lat/phone-align-lattice.h
2.76 KB
8dcb6dfcb
first commit
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 |
// lat/phone-align-lattice.h
// Copyright 2009-2012 Microsoft Corporation Johns Hopkins University (Author: Daniel Povey)
// 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.
#ifndef KALDI_LAT_PHONE_ALIGN_LATTICE_H_
#define KALDI_LAT_PHONE_ALIGN_LATTICE_H_
#include <fst/fstlib.h>
#include <fst/fst-decl.h>
#include "base/kaldi-common.h"
#include "util/common-utils.h"
#include "fstext/fstext-lib.h"
#include "hmm/transition-model.h"
#include "lat/kaldi-lattice.h"
namespace kaldi {
struct PhoneAlignLatticeOptions {
bool reorder;
bool remove_epsilon;
bool replace_output_symbols;
PhoneAlignLatticeOptions(): reorder(true),
remove_epsilon(true),
replace_output_symbols(false) { }
void Register(OptionsItf *opts) {
opts->Register("reorder", &reorder, "True if lattice was created from HCLG with "
"--reorder=true option.");
opts->Register("remove-epsilon", &remove_epsilon, "If true, removes epsilons from "
"the phone lattice; if replace-output-symbols==false, this will "
"mean that an arc can have multiple phones on it.");
opts->Register("replace-output-symbols", &replace_output_symbols, "If true, "
"the output symbols (typically words) will be replaced with "
"phones.");
}
};
/// Outputs a lattice in which the arcs correspond exactly to sequences of
/// phones, so the boundaries between the arcs correspond to the boundaries
/// between phones If remove-epsilon == false and replace-output-symbols ==
/// false, but an arc may have >1 phone on it, but the boundaries will still
/// correspond with the boundaries between phones. Note: it's possible
/// to have arcs with words on them but no transition-ids at all. Returns true if
/// everything was OK, false if some kind of error was detected (e.g. the
/// "reorder" option was incorrectly specified.)
bool PhoneAlignLattice(const CompactLattice &lat,
const TransitionModel &tmodel,
const PhoneAlignLatticeOptions &opts,
CompactLattice *lat_out);
} // end namespace kaldi
#endif
|