audio forensics

I am looking for professional audio forensics assistance to help me with identifying an individual's voice in a recording. The project is for personal use and I already have the audio recordings ready for analysis. I am seeking experienced professionals who have the qualifications and expertise to help me with this task. It is really important to me that someone is able to perform a thorough analysis to determine if this individual is on the recording so accurate results are a must. If you have the ability to provide me with the results I need, I would be very interested in speaking to you about the project.