One of the defense experts is Dr. James Wayman. He blasted Owen and Pineau
when their opinions first came out. He is a San Jose State University professor in the field of speech science with some heavy credentials
The judge reviewed the emails to see if anything in them amounted to an opinion or conclusion -- it's not that they haven't provided opinions, just that the state thought the emails would contain opinions which would make them discoverable and the Judge said they do not, so they are not subject to discovery.
James Wayman PhD, Office of Research and Graduate Studies, San Jose State University, San Jose, California. SJSU served as the U.S. National Biometric Test Center from 1997-2000, with Dr. Wayman as the director, reporting to the Clinton administration through the Security Policy Board. Prior to his current position, he was a full-time researcher for the Department of Defense in the areas of technical security and biometrics. He also invented and developed a biometric system based on the acoustic resonance of the human head. Dr. Wayman holds four patents in speech processing; is co-editor of Biometric Systems with Jain, Maltoni, and Maio (Springer-Verlag, 2005); and is the author of dozens of articles in books, peer-reviewed technical journals, and conference proceedings on biometrics, speech compression, image processing, and network control. He is a "Principal U.K. Expert" and Working Group 1 Head for Delegation for the British Standards Institute national body to the international standards committee SC37 on biometrics; editor of ISO/IEC 19794-13 "Voice Data Format"; Fellow of the UK IET; contractor to the U.S. DoD and FBI; Honorary Professor of Biometrics, University of Kent; and member of the National Research Council Committee "Whither Biometrics?", the NRC Panel for Information Technology, and the former NRC committee on "Authentication Technologies and their Privacy Implications." He has been a paid advisor on biometrics to nine national governments on five continents.Dr. Peter French
is another defense expert.
Prof Peter French (Director) is President of the International Association for Forensic Phonetics and Acoustics, a Fellow of the International Society for Phonetic Sciences, a Member of the International Association of Forensic Linguists and a Fellow of the Institute of Acoustics. He is Honorary Professor in the Department of Language and Linguistic Science at the University of York. As one of the world's most experienced experts in the field of forensic speech, language and audio analysis, he carries out work on forensic phonetics, linguistics, sound enhancement and the authentication of recordings.
His CV is here
The third defense expert is G.R. Doddington, who seems to a pioneer in the field of speech recognition. A ton of other experts, NIST, NATO, U. S. military and universities around the world still cite his work. He must be retired because he has no current website.
Zimmerman's experts are definitely impressive.