/// <summary>
/// Tell a slice is nucleus, through checking whether
/// 1) phone sequence already exists in the nucleus set
/// 2) or there is any vowel in the phone set.
/// </summary>
/// <param name="ttsMetaUnit">TtsMetaUnit to test.</param>
/// <returns>Ture if yes, otherwise false.</returns>
public bool IsNucleus(TtsMetaUnit ttsMetaUnit)
{
if (ttsMetaUnit == null)
{
throw new ArgumentNullException("ttsMetaUnit");
}
// if the slice already exists in the nucleus set,
// then return directly
if (_nucleusSlices.IndexOf(ttsMetaUnit.Name) >= 0)
{
return true;
}
// else, check if there any vowel in the phone array
Phoneme phoneme = Localor.GetPhoneme(Language);
for (int i = 0; i < ttsMetaUnit.Phones.Length; i++)
{
if (phoneme.TtsVowelPhones.IndexOf(ttsMetaUnit.Phones[i].Name) >= 0)
{
return true;
}
}
return false;
}
/// <summary>
/// Initializes a new instance of the <see cref="TtsUnit"/> class.
/// </summary>
/// <param name="language">Language for this unit.</param>
public TtsUnit(Language language)
{
_language = language;
_languages.Add(_language);
Feature = new TtsUnitFeature();
MetaUnit = new TtsMetaUnit(language);
}
/// <summary>
/// Truncate one phone from nucleus.
/// </summary>
/// <param name="phoneme">Phoneme of the language to process.</param>
/// <param name="rules">Truncation rules.</param>
/// <param name="nucleus">CVC source to truncate.</param>
/// <returns>Result: left part + right part.</returns>
public static string[] TruncateOnePhoneFromNucleus(Phoneme phoneme,
Collection<TruncateRule> rules, string nucleus)
{
if (phoneme == null)
{
throw new ArgumentNullException("phoneme");
}
if (rules == null)
{
throw new ArgumentNullException("rules");
}
if (string.IsNullOrEmpty(nucleus))
{
throw new ArgumentNullException("nucleus");
}
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(phoneme.Language);
ttsMetaUnit.Name = nucleus;
string[] phoneNames = ttsMetaUnit.GetPhonesName();
string leftPart = null;
string rightPart = null;
for (int i = 0; i < rules.Count; i++)
{
if (rules[i] == null)
{
string message = Helper.NeutralFormat("rules[{0}] should not be null.", i);
throw new ArgumentException(message);
}
if (rules[i].Side == TruncateSide.Right)
{
Match m = Regex.Match(rules[i].Phones,
@"\b" + phoneNames[phoneNames.Length - 1] + @"\b");
if (m.Success)
{
leftPart = TtsMetaPhone.Join(" ", ttsMetaUnit.Phones, 0, phoneNames.Length - 1);
rightPart = ttsMetaUnit.Phones[phoneNames.Length - 1].Name;
break;
}
}
else if (rules[i].Side == TruncateSide.Left)
{
Match m = Regex.Match(rules[i].Phones,
@"\b" + phoneNames[0] + @"\b");
if (m.Success)
{
leftPart = ttsMetaUnit.Phones[0].Name;
rightPart = TtsMetaPhone.Join(" ", ttsMetaUnit.Phones, 1, phoneNames.Length - 1);
break;
}
}
else
{
string message = string.Format(CultureInfo.InvariantCulture,
"Truncating side [{0}] is not supported.",
rules[i].Side);
Debug.Assert(false, message);
throw new NotSupportedException(message);
}
}
if (string.IsNullOrEmpty(leftPart) || string.IsNullOrEmpty(rightPart))
{
string message = string.Format(CultureInfo.InvariantCulture,
"Nucleus [{0}] has empty left phone or right phone after truncating.",
nucleus);
Trace.WriteLine(message);
leftPart = TtsMetaPhone.Join(" ", ttsMetaUnit.Phones, 0, phoneNames.Length - 1);
rightPart = ttsMetaUnit.Phones[phoneNames.Length - 1].Name;
}
return new string[] { leftPart, rightPart };
}
/// <summary>
/// Build units for syllbale pronunciation,
/// And the units are concatenated together in the string and seperated by ".".
/// </summary>
/// <param name="phoneme">Phoneme of the language to process with.</param>
/// <param name="sliceData">Slice data to process.</param>
/// <param name="syllable">Syllables to process.</param>
/// <returns>Best unit list.</returns>
public static string[] BuildUnits(Phoneme phoneme,
SliceData sliceData, string syllable)
{
if (phoneme == null)
{
throw new ArgumentNullException("phoneme");
}
if (phoneme.TtsSonorantPhones == null)
{
string message = Helper.NeutralFormat("phoneme.TtsSonorantPhones should not be null.");
throw new ArgumentException(message);
}
if (string.IsNullOrEmpty(syllable))
{
throw new ArgumentNullException("syllable");
}
if (sliceData == null)
{
throw new ArgumentNullException("sliceData");
}
if (sliceData.OnsetSlices == null)
{
string message = Helper.NeutralFormat("sliceData.OnsetSlices should not be null.");
throw new ArgumentException(message);
}
if (sliceData.NucleusSlices == null)
{
string message = Helper.NeutralFormat("sliceData.NucleusSlices should not be null.");
throw new ArgumentException(message);
}
List<string> slicedUnits = new List<string>();
string unstressedSyllable = Pronunciation.RemoveStress(syllable);
ScriptItem scriptItem = new ScriptItem(phoneme.Language);
// items contains phone and tone.
string[] items = scriptItem.PronunciationSeparator.SplitPhones(unstressedSyllable);
// Treate all syllable as one unit at first.
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(phoneme.Language);
ttsMetaUnit.Name = string.Join(" ", items);
string[] phones = ttsMetaUnit.GetPhonesName();
// Treat all phones in this syllable as a whole unit
if (sliceData.NucleusSlices.IndexOf(ttsMetaUnit.Name) >= 0)
{
// If it is alread defined in the predefined unit collection, return it
slicedUnits.Add(TtsUnit.NucleusPrefix + ttsMetaUnit.Name.Replace(" ", TtsUnit.PhoneDelimiter));
return slicedUnits.ToArray();
}
int vowelIndex = phoneme.GetFirstVowelIndex(phones);
if (vowelIndex < 0)
{
// If no vowel in the syllable, treat all phones in this syllable as a unit if it is in unit table
if (sliceData.OnsetSlices.IndexOf(ttsMetaUnit.Name) >= 0)
{
slicedUnits.Add(TtsUnit.OnsetPrefix + ttsMetaUnit.Name.Replace(" ", TtsUnit.PhoneDelimiter));
}
else if (sliceData.CodaSlices.IndexOf(ttsMetaUnit.Name) >= 0)
{
slicedUnits.Add(TtsUnit.CodaPrefix + ttsMetaUnit.Name.Replace(" ", TtsUnit.PhoneDelimiter));
}
else
{
// otherwise, treat each phone as a coda unit
foreach (string phone in phones)
{
slicedUnits.Add(TtsUnit.CodaPrefix + phone);
}
}
return slicedUnits.ToArray();
}
// Search first cosonant sonarant from the left side of the vowel font in the syllable
int firstSonarantIndex = vowelIndex;
for (int i = vowelIndex - 1; i >= 0; i--)
{
if (phoneme.TtsSonorantPhones.IndexOf(phones[i]) >= 0)
{
firstSonarantIndex = i;
}
}
// Search last cosonant sonarant from the right side of the vowel font in the syllable
int lastSonarantIndex = vowelIndex;
for (int i = vowelIndex + 1; i <= phones.Length - 1; i++)
{
if (phoneme.TtsSonorantPhones.IndexOf(phones[i]) >= 0)
{
lastSonarantIndex = i;
}
}
// Treat all vowel and surrounding sonarant consonants as the nucleus unit first
string nucleus = TtsMetaPhone.Join(" ", ttsMetaUnit.Phones,
firstSonarantIndex, lastSonarantIndex - firstSonarantIndex + 1);
TruncateRuleData truncateRuleData = Localor.GetTruncateRuleData(phoneme.Language);
// Refine nucleus according to the predefined unit table
while (lastSonarantIndex - firstSonarantIndex > 0 && sliceData.NucleusSlices.IndexOf(nucleus) <= 0)
{
// If the unit candidate is not listed in the predefined unit list, try to truncate it
string[] leftRight =
PhoneMerger.TruncateOnePhoneFromNucleus(phoneme, truncateRuleData.NucleusTruncateRules,
nucleus);
if (phoneme.TtsPhones.IndexOf(leftRight[0]) >= 0)
{
Debug.Assert(phoneme.TtsPhones.IndexOf(leftRight[0]) >= 0);
firstSonarantIndex++;
}
else
{
Debug.Assert(phoneme.TtsPhones.IndexOf(leftRight[1]) >= 0);
lastSonarantIndex--;
}
// Re-define the remaining nucleus unit
nucleus = TtsMetaPhone.Join(" ", ttsMetaUnit.Phones,
firstSonarantIndex, lastSonarantIndex - firstSonarantIndex + 1);
}
slicedUnits.Add(TtsUnit.NucleusPrefix + nucleus.Replace(" ", TtsUnit.PhoneDelimiter));
// Refine onset
for (int index = firstSonarantIndex - 1; index >= 0; index--)
{
string onset = TtsMetaPhone.Join(TtsUnit.PhoneDelimiter, ttsMetaUnit.Phones, 0, index + 1);
if (sliceData.OnsetSlices.IndexOf(onset.Replace(TtsUnit.PhoneDelimiter, " ")) >= 0)
{
slicedUnits.Insert(0, TtsUnit.OnsetPrefix + onset);
// Remove the number of added phones,
// except current phone itself which will be recuded by index--
index -= index;
}
else
{
// Treat it as a single phone unit
slicedUnits.Insert(0,
TtsUnit.OnsetPrefix + TtsMetaPhone.Join(TtsUnit.PhoneDelimiter, ttsMetaUnit.Phones, index, 1));
}
}
// Refine coda, matching from right to left
BuildCodaUnits(sliceData, ttsMetaUnit.Phones, lastSonarantIndex + 1, slicedUnits);
return slicedUnits.ToArray();
}
/// <summary>
/// Estimate position in syllable for each slice in a slice set.
/// </summary>
/// <param name="slices">Slice collection to estimate.</param>
/// <returns>Estimated result of position in syllable.</returns>
private PosInSyllable[] EstimatePosInSyllable(string[] slices)
{
PosInSyllable[] pis = new PosInSyllable[slices.Length];
int nucleusIndex = -1;
for (int sliceIndex = 0; sliceIndex < slices.Length; sliceIndex++)
{
SliceData slicedata = Localor.GetSliceData(this.Language);
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(this.Language);
ttsMetaUnit.Name = slices[sliceIndex];
if (slicedata.IsNucleus(ttsMetaUnit))
{
if (sliceIndex == 0)
{
if (sliceIndex == slices.Length - 1)
{
pis[sliceIndex] = PosInSyllable.NucleusInV;
}
else
{
pis[sliceIndex] = PosInSyllable.NucleusInVC;
}
}
else
{
if (sliceIndex == slices.Length - 1)
{
pis[sliceIndex] = PosInSyllable.NucleusInCV;
}
else
{
pis[sliceIndex] = PosInSyllable.NucleusInCVC;
}
}
nucleusIndex = sliceIndex;
break;
}
}
for (int sliceIndex = 0; sliceIndex < nucleusIndex; sliceIndex++)
{
pis[sliceIndex] = PosInSyllable.Onset;
}
for (int sliceIndex = nucleusIndex + 1; sliceIndex < slices.Length; sliceIndex++)
{
pis[sliceIndex] = PosInSyllable.Coda;
}
return pis;
}
/// <summary>
/// Given one sentence's pronunciation string, convert
/// One Phone-based segment file to Unit-based segment file.
/// </summary>
/// <param name="pronunciation">Pronunciation string.</param>
/// <param name="filePath">Phone-based segment file.</param>
/// <param name="targetFilePath">Unit-based segment file.</param>
/// <returns>Data error found.</returns>
public virtual DataError CombinePhone(string pronunciation,
string filePath, string targetFilePath)
{
pronunciation = Core.Pronunciation.CleanDecorate(pronunciation);
string[] slices = PronunciationSeparator.SplitSlices(pronunciation);
Collection<WaveSegment> phoneSegs = SegmentFile.ReadAllData(filePath);
DataError dataError = null;
using (StreamWriter sw = new StreamWriter(targetFilePath))
{
int sliceIndex = 0;
StringBuilder slice = new StringBuilder();
for (int i = 0; i < phoneSegs.Count;)
{
if (phoneSegs[i].IsSilenceFeature)
{
sw.WriteLine(phoneSegs[i].ToString());
i++;
continue;
}
if (sliceIndex >= slices.Length)
{
string sid = Path.GetFileNameWithoutExtension(filePath);
dataError = new DataError(filePath,
"Data does not align between phone segmentation and pronunciation in CombinePhone", sid);
break;
}
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(Language);
ttsMetaUnit.Name = slices[sliceIndex];
sliceIndex++;
// Clear first
slice.Remove(0, slice.Length);
foreach (TtsMetaPhone phone in ttsMetaUnit.Phones)
{
if (string.IsNullOrEmpty(phone.Name))
{
continue;
}
if (slice.Length > 0)
{
slice.Append("+");
}
slice.Append(phone.FullName);
}
if (slice.Length == 0)
{
continue;
}
sw.Write(phoneSegs[i].StartTime.ToString("F5", CultureInfo.InvariantCulture));
sw.WriteLine(" " + slice.ToString());
i += ttsMetaUnit.Phones.Length;
}
}
if (dataError != null)
{
try
{
File.Delete(targetFilePath);
}
catch (IOException ioe)
{
Console.WriteLine(ioe.Message);
}
}
return dataError;
}
private static TtsMetaUnit ParseMetaUnitForViterbi(string line)
{
string[] items = line.Split(new char[] { ' ' },
StringSplitOptions.RemoveEmptyEntries);
System.Diagnostics.Debug.Assert(items.Length > 13);
int languageValue = int.Parse(items[12], CultureInfo.InvariantCulture);
int unitId = int.Parse(items[13], CultureInfo.InvariantCulture);
TtsMetaUnit mu = new TtsMetaUnit(Localor.MapLanguageId(languageValue));
mu.Id = unitId;
mu.Name = items[items.Length - 1];
return mu;
}
/// <summary>
/// Validate the syllable in word pronunciation are valid or not.
/// </summary>
/// <param name="entry">Script item.</param>
/// <param name="word">Pronunciation of word.</param>
/// <returns>Data error found.</returns>
public static DataError ValidateSyllables(ScriptItem entry, string word)
{
if (entry == null)
{
throw new ArgumentNullException("entry");
}
if (entry.PronunciationSeparator == null)
{
string message = Helper.NeutralFormat("entry.PronunciationSeparator should not be null.");
throw new ArgumentException(message);
}
if (string.IsNullOrEmpty(entry.PronunciationSeparator.Syllable))
{
string message = Helper.NeutralFormat("entry.PronunciationSeparator.Syllable should not be null.");
throw new ArgumentException(message);
}
if (string.IsNullOrEmpty(word))
{
throw new ArgumentNullException("word");
}
Phoneme phoneme = Localor.GetPhoneme(entry.Language);
DataError dataError = null;
string[] syllables = word.Split(new string[] { entry.PronunciationSeparator.Syllable },
StringSplitOptions.None);
for (int j = 0; j < syllables.Length; j++)
{
string syllable = syllables[j].Trim();
if (string.IsNullOrEmpty(syllable))
{
string message = string.Format(CultureInfo.InvariantCulture,
"The syllable[{0}] of word[{1}] pronunciation is empty by separator [{2}]",
j, word, entry.PronunciationSeparator.Syllable);
dataError = new DataError("null", message, entry.Id);
break;
}
if (Regex.Match(syllable, "^_(.*)_$").Success)
{
// Special unit
continue;
}
string[] itmes = entry.PronunciationSeparator.SplitPhones(syllable);
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(entry.Language);
ttsMetaUnit.Name = string.Join(" ", itmes);
string[] phones = ttsMetaUnit.GetPhonesName();
// Tell whether is a valid nucleus,
// which could be syllable with no vowel in some languages, like fr-CA
SliceData sliceData = Localor.GetSliceData(entry.Language);
if (sliceData.NucleusSlices.IndexOf(ttsMetaUnit.Name) < 0)
{
bool goodSyllable;
if (entry.Language == Language.EnUS)
{
// syllable that must have vowels
goodSyllable = IsGoodSyllableWithVowel(entry, phoneme, phones);
}
else if (entry.Language == Language.RuRU)
{
// A Russian syllable can have no sonorant
goodSyllable = IsSyllableWithLessVowel(entry, phoneme, phones);
}
else
{
// syllable that must have vowels or sonorants
goodSyllable = IsGoodSyllableWithSonorant(entry, phoneme, phones);
}
if (!goodSyllable)
{
int[] vowelIndexes = phoneme.GetVowelIndexes(phones);
string str1 = "There must be minimum {0} vowels or maximum {1} included in syllable ";
string str2 = "or the syllable should have one sonorant and more than one consonants, ";
string str3 = "but {2} vowels are found in syllable [{3}] of word [{4}].";
string message = string.Format(CultureInfo.InvariantCulture, str1 + str2 + str3,
entry.MinVowelCountInSyllable, entry.MaxVowelCountInSyllable,
vowelIndexes.Length, syllables[j], word);
dataError = new DataError("null", message, entry.Id);
break;
}
}
// check slice's pronunciation
dataError = ValidateSlices(entry, syllable);
if (dataError != null)
{
break;
}
}
return dataError;
}
/// <summary>
/// Given one item, convert
/// One Phone-based segment file to Unit-based segment file.
/// </summary>
/// <param name="item">ScriptItem.</param>
/// <param name="segmentFilePath">Phone-based segment file.</param>
/// <param name="targetFilePath">Unit-based segment file.</param>
/// <param name="ignoreTone">IgnoreTone.</param>
/// <returns>Data error found.</returns>
public static Error CombinePhonesToUnits(ScriptItem item, string segmentFilePath,
string targetFilePath, bool ignoreTone)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
StringBuilder sb = new StringBuilder();
foreach (ScriptSentence sentence in item.Sentences)
{
foreach (ScriptWord word in sentence.Words)
{
if (!string.IsNullOrEmpty(word.Pronunciation))
{
sb.AppendFormat("{0} / ", word.Pronunciation);
}
}
}
string pronunciation = Pronunciation.RemoveStress(sb.ToString());
string[] slices = item.PronunciationSeparator.SplitSlices(pronunciation);
Collection<WaveSegment> phoneSegs = SegmentFile.ReadAllData(segmentFilePath);
Error dataError = null;
using (StreamWriter sw = new StreamWriter(targetFilePath))
{
int sliceIndex = 0;
StringBuilder slice = new StringBuilder();
for (int i = 0; i < phoneSegs.Count;)
{
if (phoneSegs[i].IsSilenceFeature)
{
sw.WriteLine(phoneSegs[i].ToString());
i++;
continue;
}
if (sliceIndex >= slices.Length)
{
string strTmp = "Data does not align between phone segmentation and pronunciation in CombinePhone";
dataError = new Error(ScriptError.OtherErrors, item.Id, Helper.NeutralFormat(strTmp));
break;
}
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(item.Language);
ttsMetaUnit.Name = slices[sliceIndex];
sliceIndex++;
// Clear first
slice.Remove(0, slice.Length);
foreach (TtsMetaPhone phone in ttsMetaUnit.Phones)
{
if (string.IsNullOrEmpty(phone.Name))
{
continue;
}
if (slice.Length > 0)
{
slice.Append("+");
}
slice.Append(ignoreTone ? phone.Name : phone.FullName);
}
if (slice.Length == 0)
{
continue;
}
sw.Write(phoneSegs[i].StartTime.ToString("F5", CultureInfo.InvariantCulture));
sw.WriteLine(" " + slice.ToString());
i += ttsMetaUnit.Phones.Length;
}
}
if (dataError != null)
{
try
{
File.Delete(targetFilePath);
}
catch (IOException ioe)
{
Console.WriteLine(ioe.Message);
}
}
return dataError;
}