Make sure the audio files are the correct format. WAV file, 44.1kHz sample rate, 16 bit depth, mono (1) channel.
If you haven't configured the OTO.ini, this is a guide for a basic CV Japanese voicebank. There may be a long silence at the beginning of the file, which you can shorten using the Offset parameter.
This guide was originally written in 2014 and rewritten in 2015, as a resource for newbies who received otoing services from this thread. http://utaforum.net/threads/services-for-newbies.8918/ I am now making this publicly available to the...
utaforum.net
You can read about how the OTO.ini works in general here.
This is not a guide to tell you how to OTO any particular type of bank. Rather, my hope is that by explaining how it actually works, you can gain a better understanding of what you're doing with an OTO, and use that to improve and innovate on...
utaforum.net
Finally, make sure to create notes and type in lyrics that match the filename of the sample or the Alias from the OTO.ini. You need to select the notes in order to play them.