I used voxforge[1], a project made specifically to solve this problem: > VoxForge was set up to collect transcribed speech for use with Free and Open Source S

I used voxforge[1], a project made specifically to solve this problem: > VoxForge was set up to collect transcribed speech for use with Free and Open Source Speech Recognition Engines (on Linux, Windows and Mac). VoxForge's sample grammar is provided as a default, in its own folder [2]. It would be nice to get a high-quality acoustic model, as voxforge's is not that comprehensive yet, but I couldn't find anything with the right licensing and zero cost. If anyone knows of one, I'd love to hear about it. [1] http://www.voxforge.org/ http://www.voxforge.org/ [2] https://github.com/zzmp/juliusjs/tree/master/dist/voxforge https://github.com/zzmp/juliusjs/tree/master/dist/voxforge