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Refactoring and better logging

This commit is contained in:
Daniel Wolf 2016-09-29 10:44:34 +02:00
parent 750078618c
commit 760f6c2ce6
1 changed files with 64 additions and 46 deletions
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110
src/phoneRecognition.cpp
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@ -278,9 +278,31 @@ lambda_unique_ptr<ps_decoder_t> createDecoder(optional<u32string> dialog) {
return decoder;
}
Timeline<void> getNoiseSounds(TimeRange utteranceTimeRange, const Timeline<Phone>& phones) {
Timeline<void> noiseSounds;
// Find utterance parts without recogniced phones
noiseSounds.set(utteranceTimeRange);
for (const auto& timedPhone : phones) {
noiseSounds.clear(timedPhone.getTimeRange());
}
// Remove undesired elements
const centiseconds minSoundLength = 5_cs;
for (const auto& unknownSound : Timeline<void>(noiseSounds)) {
bool startsAtZero = unknownSound.getStart() == 0_cs;
bool tooShort = unknownSound.getTimeRange().getLength() < minSoundLength;
if (startsAtZero || tooShort) {
noiseSounds.clear(unknownSound.getTimeRange());
}
}
return noiseSounds;
}
Timeline<Phone> utteranceToPhones(
const AudioClip& audioClip,
TimeRange utterance,
TimeRange utteranceTimeRange,
ps_decoder_t& decoder,
ProgressSink& utteranceProgressSink)
{
@ -288,18 +310,42 @@ Timeline<Phone> utteranceToPhones(
ProgressSink& wordRecognitionProgressSink = utteranceProgressMerger.addSink(1.0);
ProgressSink& alignmentProgressSink = utteranceProgressMerger.addSink(0.5);
const unique_ptr<AudioClip> clipSegment = audioClip.clone() | segment(utterance) | resample(sphinxSampleRate);
// Pad time range to give Pocketsphinx some breathing room
TimeRange paddedTimeRange = utteranceTimeRange;
const centiseconds padding(3);
paddedTimeRange.grow(padding);
paddedTimeRange.trim(audioClip.getTruncatedRange());
const unique_ptr<AudioClip> clipSegment = audioClip.clone() | segment(paddedTimeRange) | resample(sphinxSampleRate);
const auto audioBuffer = copyTo16bitBuffer(*clipSegment);
// Get words
BoundedTimeline<string> words = recognizeWords(audioBuffer, decoder);
wordRecognitionProgressSink.reportProgress(1.0);
// Log utterance text
string text;
for (auto& timedWord : words) {
string word = timedWord.getValue();
// Skip details
if (word == "<s>" || word == "</s>" || word == "<sil>") {
continue;
}
word = regex_replace(word, regex("\\(\\d\\)"), "");
if (text.size() > 0) {
text += " ";
}
text += word;
}
logging::logTimedEvent("utterance", utteranceTimeRange, text);
// Log words
for (Timed<string> timedWord : words) {
timedWord.getTimeRange().shift(utterance.getStart());
timedWord.getTimeRange().shift(paddedTimeRange.getStart());
logging::logTimedEvent("word", timedWord);
}
// Look up words in dictionary
// Convert word strings to word IDs using dictionary
vector<s3wid_t> wordIds;
for (const auto& timedWord : words) {
wordIds.push_back(getWordId(timedWord.getValue(), *decoder.dict));
@ -310,39 +356,28 @@ Timeline<Phone> utteranceToPhones(
#if BOOST_VERSION < 105600 // Support legacy syntax
#define value_or get_value_or
#endif
Timeline<Phone> segmentPhones = getPhoneAlignment(wordIds, audioBuffer, decoder)
Timeline<Phone> utterancePhones = getPhoneAlignment(wordIds, audioBuffer, decoder)
.value_or(ContinuousTimeline<Phone>(clipSegment->getTruncatedRange(), Phone::Noise));
alignmentProgressSink.reportProgress(1.0);
segmentPhones.shift(utterance.getStart());
for (const auto& timedPhone : segmentPhones) {
utterancePhones.shift(paddedTimeRange.getStart());
// Log raw phones
for (const auto& timedPhone : utterancePhones) {
logging::logTimedEvent("rawPhone", timedPhone);
}
return segmentPhones;
// Guess positions of noise sounds
Timeline<void> noiseSounds = getNoiseSounds(utteranceTimeRange, utterancePhones);
for (const auto& noiseSound : noiseSounds) {
utterancePhones.set(noiseSound.getTimeRange(), Phone::Noise);
}
Timeline<void> getUnknownSounds(const Timeline<void>& utterances, const Timeline<Phone>& phones) {
Timeline<void> unknownSounds;
// Find utterance parts without recogniced phones
for (const auto& timedUtterance : utterances) {
unknownSounds.set(timedUtterance.getTimeRange());
}
for (const auto& timedPhone : phones) {
unknownSounds.clear(timedPhone.getTimeRange());
// Log phones
for (const auto& timedPhone : utterancePhones) {
logging::logTimedEvent("phone", timedPhone);
}
// Remove undesired elements
const centiseconds minSoundLength = 5_cs;
for (const auto& unknownSound : Timeline<void>(unknownSounds)) {
bool startsAtZero = unknownSound.getStart() == 0_cs;
bool tooShort = unknownSound.getTimeRange().getLength() < minSoundLength;
if (startsAtZero || tooShort) {
unknownSounds.clear(unknownSound.getTimeRange());
}
}
return unknownSounds;
return utterancePhones;
}
BoundedTimeline<Phone> recognizePhones(
@ -380,18 +415,10 @@ BoundedTimeline<Phone> recognizePhones(
BoundedTimeline<Phone> phones(audioClip->getTruncatedRange());
std::mutex resultMutex;
auto processUtterance = [&](Timed<void> timedUtterance, ProgressSink& utteranceProgressSink) {
logging::logTimedEvent("utterance", timedUtterance.getTimeRange(), string(""));
// Pad time range to give the recognizer some breathing room
TimeRange paddedTimeRange = timedUtterance.getTimeRange();
const centiseconds padding(3);
paddedTimeRange.grow(padding);
paddedTimeRange.trim(audioClip->getTruncatedRange());
// Detect phones for utterance
auto decoder = decoderPool.acquire();
Timeline<Phone> utterancePhones =
utteranceToPhones(*audioClip, paddedTimeRange, *decoder, utteranceProgressSink);
utteranceToPhones(*audioClip, timedUtterance.getTimeRange(), *decoder, utteranceProgressSink);
// Copy phones to result timeline
std::lock_guard<std::mutex> lock(resultMutex);
@ -425,14 +452,5 @@ BoundedTimeline<Phone> recognizePhones(
std::throw_with_nested(runtime_error("Error performing speech recognition via Pocketsphinx."));
}
logging::debug("Detecting unknown sounds");
Timeline<void> unknownSounds = getUnknownSounds(utterances, phones);
for (const auto& unknownSound : unknownSounds) {
phones.set(unknownSound.getTimeRange(), Phone::Noise);
}
for (const auto& timedPhone : phones) {
logging::logTimedEvent("phone", timedPhone);
}
return phones;
}