You may want to include info about objective measures of voice quality. This might be an ideal calculator application provided you have access to speech signals to compare.
The application would work as follows: upload voice signals from say application A and standard PCM say B. Use calculator to evaluate
distortion measure F(A,B) and return an objecive measure of speech quality. This would provide a quick and easy way to evaluate competing codecs or vocoders for voice quality.
Let me know if you are interested I would love to consult for this project during weekends.