compare two voices

[Kent Johnson]

Qiangning Hong wrote:
> I want to make an app to help students study foreign language.  I want
> the following function in it:
> 
> The student reads a piece of text to the microphone. The software
> records it and compares it to the wave-file pre-recorded by the
> teacher, and gives out a score to indicate the similarity between them.
> 
> This function will help the students pronounce properly, I think.
> 
> Is there an existing library (C or Python) to do this?  Or if someone
> can guide me to a ready-to-implement algorithm?
> 
I have worked on a commercial product that attempts to do this and I will confirm that it is very 
difficult to create a meaningful score.

Kent