Summary of the paper

Title TTS Evaluation Campaign with a Common Spanish Database
Authors Iñaki Sainz, Eva Navas, Inma Hernáez, Antonio Bonafonte and Francisco Campillo
Abstract This paper describes the first TTS evaluation campaign designed for Spanish.Seven research institutions took part in the evaluation campaign and developeda voice from a common speech database provided by the organisation. Eachparticipating team had a period of seven weeks to generate a voice. Next, a setof sentences were released and each team had to synthesise them within a weekperiod. Finally, some of the synthesised test audio files were subjectivelyevaluated via an online test according to the following criteria: similarity tothe original voice, naturalness and intelligibility. Box-plots, Wilcoxon testsand WER have been generated in order to analyse the results. Two mainconclusions can be drawn: On the one hand, there is considerable margin forimprovement to reach the quality level of the natural voice. On the other hand,two systems get significantly better results than the rest: one is based onstatistical parametric synthesis and the other one is a concatenative systemthat makes use of a sinusoidal model to modify both prosody and smooth spectraljoints.Therefore, it seems that some kind of spectral control is needed when buildingvoices with a medium size database for unrestricted domains.
Language Other
Topics Speech Synthesis, Evaluation methodologies, Other
Full paper TTS Evaluation Campaign with a Common Spanish Database
Bibtex @InProceedings{SAINZ10.456,
  author = {Iñaki Sainz, Eva Navas, Inma Hernáez, Antonio Bonafonte and Francisco Campillo},
  title = {TTS Evaluation Campaign with a Common Spanish Database},
  booktitle = {Proceedings of the Seventh conference on International Language Resources and Evaluation (LREC'10)},
  year = {2010},
  month = {may},
  date = {19-21},
  address = {Valletta, Malta},
  editor = {Nicoletta Calzolari (Conference Chair), Khalid Choukri, Bente Maegaard, Joseph Mariani, Jan Odjik, Stelios Piperidis, Mike Rosner, Daniel Tapias},
  publisher = {European Language Resources Association (ELRA)},
  isbn = {2-9517408-6-7},
  language = {english}
 }
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