Pronunciation audio comparison

Budget: $1,000 to $2,500

EduLift combines tried and tested pedagogic methodology with innovative software, web applications and print resources in order to improve the way we learn. 
We are currently working on a new pronunciation improvement tool for our LinguaLift language learning websites and are in search of web developers with experience in audio comparison, and especially pronunciation accuracy evaluation.
We will favour developers with experience working on similar projects. If possible, please include links to examples of your audio-related projects or experiments in your application.