Voice/Speech to text [closed]

Question

I need an API or library (preferably free) that will convert voice/speech through a microphone, into text (string).

Additionally, I will need an API or library that can do text-to-speech.

I'd like to use C# and .NET, but other languages will suffice.

Thanks.

Answer 1

You can use CMU Sphinx as it is pretty open and scalable solution and I think it can be used at both client and server side:

http://cmusphinx.sourceforge.net/

If you are looking for a Microsoft desktop solution then you can use SAPI:

http://msdn.microsoft.com/en-us/magazine/cc163663.aspx

On server side, you can use Microsoft Unified Communication, but do consider licencing as well:

http://www.microsoft.com/uc/en/gb/default.aspx

Update:

This thread has also some good reference:

C# Speech Recognition - Is this what the user said?