// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// todo refactor, repalce with gtest
#include "base/flags.h"
#include "base/log.h"
#include "frontend/feature_extractor_interface.h"
#include "frontend/linear_spectrogram.h"
#include "frontend/normalizer.h"
#include "kaldi/feat/wave-reader.h"
#include "kaldi/util/kaldi-io.h"
#include "kaldi/util/table-types.h"
DEFINE_string(wav_rspecifier, "", "test wav path");
DEFINE_string(feature_wspecifier, "", "test wav ark");
DEFINE_string(feature_check_wspecifier, "", "test wav ark");
DEFINE_string(cmvn_write_path, "./cmvn.ark", "test wav ark");
std::vector<float> mean_{
-13730251.531853663, -12982852.199316509, -13673844.299583456,
-13089406.559646806, -12673095.524938712, -12823859.223276224,
-13590267.158903603, -14257618.467152044, -14374605.116185192,
-14490009.21822485, -14849827.158924166, -15354435.470563512,
-15834149.206532761, -16172971.985514281, -16348740.496746974,
-16423536.699409386, -16556246.263649225, -16744088.772748645,
-16916184.08510357, -17054034.840031497, -17165612.509455364,
-17255955.470915023, -17322572.527648456, -17408943.862033736,
-17521554.799865916, -17620623.254924215, -17699792.395918526,
-17723364.411134344, -17741483.4433254, -17747426.888704527,
-17733315.928209435, -17748780.160905756, -17808336.883775543,
-17895918.671983004, -18009812.59173023, -18098188.66548325,
-18195798.958462656, -18293617.62980999, -18397432.92077201,
-18505834.787318766, -18585451.8100908, -18652438.235649142,
-18700960.306275308, -18734944.58792185, -18737426.313365128,
-18735347.165987637, -18738813.444170244, -18737086.848890636,
-18731576.2474336, -18717405.44095871, -18703089.25545657,
-18691014.546456724, -18692460.568905357, -18702119.628629155,
-18727710.621126678, -18761582.72034647, -18806745.835547544,
-18850674.8692112, -18884431.510951452, -18919999.992506847,
-18939303.799078144, -18952946.273760635, -18980289.22996379,
-19011610.17803294, -19040948.61805145, -19061021.429847397,
-19112055.53768819, -19149667.414264943, -19201127.05091321,
-19270250.82564605, -19334606.883057203, -19390513.336589377,
-19444176.259208687, -19502755.000038862, -19544333.014549147,
-19612668.183176614, -19681902.19006569, -19771969.951249883,
-19873329.723376893, -19996752.59235844, -20110031.131400537,
-20231658.612529557, -20319378.894054495, -20378534.45718066,
-20413332.089584175, -20438147.844177883, -20443710.248040095,
-20465457.02238927, -20488610.969337028, -20516295.16424432,
-20541423.795738827, -20553192.874953747, -20573605.50701977,
-20577871.61936797, -20571807.008916274, -20556242.38912231,
-20542199.30819195, -20521239.063551214, -20519150.80004532,
-20527204.80248933, -20536933.769257784, -20543470.522332076,
-20549700.089992985, -20551525.24958494, -20554873.406493705,
-20564277.65794227, -20572211.740052115, -20574305.69550465,
-20575494.450104576, -20567092.577932164, -20549302.929608088,
-20545445.11878376, -20546625.326603737, -20549190.03499401,
-20554824.947828256, -20568341.378989458, -20577582.331383612,
-20577980.519402675, -20566603.03458152, -20560131.592262644,
-20552166.469060015, -20549063.06763577, -20544490.562339947,
-20539817.82346569, -20528747.715731595, -20518026.24576161,
-20510977.844974525, -20506874.36087992, -20506731.11977665,
-20510482.133420516, -20507760.92101862, -20494644.834457114,
-20480107.89304893, -20461312.091867123, -20442941.75080173,
-20426123.02834838, -20424607.675283, -20426810.369107097,
-20434024.50097819, -20437404.75544205, -20447688.63916367,
-20460893.335563846, -20482922.735127095, -20503610.119434915,
-20527062.76448319, -20557830.035128627, -20593274.72068722,
-20632528.452965066, -20673637.471334763, -20733106.97143075,
-20842921.0447562, -21054357.83621519, -21416569.534189366,
-21978460.272811692, -22753170.052172784, -23671344.10563395,
-24613499.293358143, -25406477.12230188, -25884377.82156489,
-26049040.62791664, -26996879.104431007};
std::vector<float> variance_{
213747175.10846674, 188395815.34302503, 212706429.10966414,
199109025.81461075, 189235901.23864496, 194901336.53253657,
217481594.29306737, 238689869.12327808, 243977501.24115244,
248479623.6431067, 259766741.47116545, 275516766.7790273,
291271202.3691234, 302693239.8220509, 308627358.3997694,
311143911.38788426, 315446105.07731867, 321705430.9341829,
327458907.4659941, 332245072.43223983, 336251717.5935284,
339694069.7639722, 342188204.4322228, 345587110.31313115,
349903086.2875232, 353660214.20643026, 356700344.5270885,
357665362.3529641, 358493352.05658793, 358857951.620328,
358375239.52774596, 358899733.6342954, 361051818.3511561,
364361716.05025816, 368750322.3771452, 372047800.6462831,
375655861.1349018, 379358519.1980013, 383327605.3935181,
387458599.282341, 390434692.3406868, 392994486.35057056,
394874418.04603153, 396230525.79763395, 396365592.0414835,
396334819.8242737, 396488353.19250053, 396438877.00744957,
396197980.4459586, 395590921.6672991, 395001107.62072515,
394528291.7318225, 394593110.424006, 395018405.59353715,
396110577.5415993, 397506704.0371068, 399400197.4657644,
401243568.2468382, 402687134.7805103, 404136047.2872507,
404883170.001883, 405522253.219517, 406660365.3626476,
407919346.0991902, 409045348.5384909, 409759588.7889818,
411974821.8564483, 413489718.78201455, 415535392.56684107,
418466481.97674364, 421104678.35678065, 423405392.5200779,
425550570.40798235, 427929423.9579701, 429585274.253478,
432368493.55181056, 435193587.13513297, 438886855.20476013,
443058876.8633751, 448181232.5093362, 452883835.6332396,
458056721.77926534, 461816531.22735566, 464363620.1970998,
465886343.5057493, 466928872.0651, 467180536.42647296,
468111848.70714295, 469138695.3071312, 470378429.6930793,
471517958.7132626, 472109050.4262365, 473087417.0177867,
473381322.04648733, 473220195.85483915, 472666071.8998819,
472124669.87879956, 471298571.411737, 471251033.2902761,
471672676.43128747, 472177147.2193172, 472572361.7711908,
472968783.7751127, 473156295.4164052, 473398034.82676554,
473897703.5203811, 474328271.33112127, 474452670.98002136,
474549003.99284613, 474252887.13567275, 473557462.909069,
473483385.85193115, 473609738.04855174, 473746944.82085115,
474016729.91696435, 474617321.94138587, 475045097.237122,
475125402.586558, 474664112.9824912, 474426247.5800283,
474104075.42796475, 473978219.7273978, 473773171.7798875,
473578534.69508696, 473102924.16904145, 472651240.5232615,
472374383.1810912, 472209479.6956096, 472202298.8921673,
472370090.76781124, 472220933.99374026, 471625467.37106377,
470994646.51883453, 470182428.9637543, 469348211.5939578,
468570387.4467277, 468540442.7225135, 468672018.90414184,
468994346.9533251, 469138757.58201426, 469553915.95710236,
470134523.38582784, 471082421.62055486, 471962316.51804745,
472939745.1708408, 474250621.5944825, 475773933.43199486,
477465399.71087736, 479218782.61382693, 481752299.7930922,
486608947.8984568, 496119403.2067917, 512730085.5704984,
539048915.2641417, 576285298.3548826, 621610270.2240586,
669308196.4436442, 710656993.5957186, 736344437.3725077,
745481288.0241544, 801121432.9925804};
int count_ = 912592;
void WriteMatrix() {
kaldi::Matrix<double> cmvn_stats(2, mean_.size() + 1);
for (size_t idx = 0; idx < mean_.size(); ++idx) {
cmvn_stats(0, idx) = mean_[idx];
cmvn_stats(1, idx) = variance_[idx];
}
cmvn_stats(0, mean_.size()) = count_;
kaldi::WriteKaldiObject(cmvn_stats, FLAGS_cmvn_write_path, true);
}
int main(int argc, char* argv[]) {
gflags::ParseCommandLineFlags(&argc, &argv, false);
google::InitGoogleLogging(argv[0]);
kaldi::SequentialTableReader<kaldi::WaveHolder> wav_reader(
FLAGS_wav_rspecifier);
kaldi::BaseFloatMatrixWriter feat_writer(FLAGS_feature_wspecifier);
kaldi::BaseFloatMatrixWriter feat_cmvn_check_writer(
FLAGS_feature_check_wspecifier);
WriteMatrix();
// test feature linear_spectorgram: wave --> decibel_normalizer --> hanning
// window -->linear_spectrogram --> cmvn
int32 num_done = 0, num_err = 0;
ppspeech::LinearSpectrogramOptions opt;
opt.frame_opts.frame_length_ms = 20;
opt.frame_opts.frame_shift_ms = 10;
ppspeech::DecibelNormalizerOptions db_norm_opt;
std::unique_ptr<ppspeech::FeatureExtractorInterface> base_feature_extractor(
new ppspeech::DecibelNormalizer(db_norm_opt));
ppspeech::LinearSpectrogram linear_spectrogram(
opt, std::move(base_feature_extractor));
ppspeech::CMVN cmvn(FLAGS_cmvn_write_path);
float streaming_chunk = 0.36;
int sample_rate = 16000;
int chunk_sample_size = streaming_chunk * sample_rate;
LOG(INFO) << mean_.size();
for (size_t i = 0; i < mean_.size(); i++) {
mean_[i] /= count_;
variance_[i] = variance_[i] / count_ - mean_[i] * mean_[i];
if (variance_[i] < 1.0e-20) {
variance_[i] = 1.0e-20;
}
variance_[i] = 1.0 / std::sqrt(variance_[i]);
}
for (; !wav_reader.Done(); wav_reader.Next()) {
std::string utt = wav_reader.Key();
const kaldi::WaveData& wave_data = wav_reader.Value();
int32 this_channel = 0;
kaldi::SubVector<kaldi::BaseFloat> waveform(wave_data.Data(),
this_channel);
int tot_samples = waveform.Dim();
int sample_offset = 0;
std::vector<kaldi::Matrix<BaseFloat>> feats;
int feature_rows = 0;
while (sample_offset < tot_samples) {
int cur_chunk_size =
std::min(chunk_sample_size, tot_samples - sample_offset);
kaldi::Vector<kaldi::BaseFloat> wav_chunk(cur_chunk_size);
for (int i = 0; i < cur_chunk_size; ++i) {
wav_chunk(i) = waveform(sample_offset + i);
}
kaldi::Matrix<BaseFloat> features;
linear_spectrogram.AcceptWaveform(wav_chunk);
linear_spectrogram.ReadFeats(&features);
feats.push_back(features);
sample_offset += cur_chunk_size;
feature_rows += features.NumRows();
}
int cur_idx = 0;
kaldi::Matrix<kaldi::BaseFloat> features(feature_rows,
feats[0].NumCols());
for (auto feat : feats) {
for (int row_idx = 0; row_idx < feat.NumRows(); ++row_idx) {
for (int col_idx = 0; col_idx < feat.NumCols(); ++col_idx) {
features(cur_idx, col_idx) =
(feat(row_idx, col_idx) - mean_[col_idx]) *
variance_[col_idx];
}
++cur_idx;
}
}
feat_writer.Write(utt, features);
cur_idx = 0;
kaldi::Matrix<kaldi::BaseFloat> features_check(feature_rows,
feats[0].NumCols());
for (auto feat : feats) {
for (int row_idx = 0; row_idx < feat.NumRows(); ++row_idx) {
for (int col_idx = 0; col_idx < feat.NumCols(); ++col_idx) {
features_check(cur_idx, col_idx) = feat(row_idx, col_idx);
}
kaldi::SubVector<BaseFloat> row_feat(features_check, cur_idx);
cmvn.ApplyCMVN(true, &row_feat);
++cur_idx;
}
}
feat_cmvn_check_writer.Write(utt, features_check);
if (num_done % 50 == 0 && num_done != 0)
KALDI_VLOG(2) << "Processed " << num_done << " utterances";
num_done++;
}
KALDI_LOG << "Done " << num_done << " utterances, " << num_err
<< " with errors.";
return (num_done != 0 ? 0 : 1);
}