Despite people mention the lack of the data it's not a problem anymore. It was a problem like few years ago but these days we have access to thousands hours of speaker data. For example we have 100 hours of single speaker database at CMUSphinx, it's not a big problem.
Algorithms become a bigger problem these days. For TTS for example one has to implement hybrid speech synthesis technology combining hidden markov models and unit selection. Most commercial companies are using this technology, but no open source project has it released. The closest ones are OpenMary and Festival, but they are either unit selection or hmm, no hybrid synthesis implementation yet.
Algorithms become a bigger problem these days. For TTS for example one has to implement hybrid speech synthesis technology combining hidden markov models and unit selection. Most commercial companies are using this technology, but no open source project has it released. The closest ones are OpenMary and Festival, but they are either unit selection or hmm, no hybrid synthesis implementation yet.