Background
Charles, Joel was born on January 12, 1914 in Philadelphia, Pennsylvania, United States. Son of Samuel William and Minnie (Fink) Blumenstein.
Charles, Joel was born on January 12, 1914 in Philadelphia, Pennsylvania, United States. Son of Samuel William and Minnie (Fink) Blumenstein.
Bachelor of Science in Chemical Engineering, Drexel University, 1938.
President, The Charles Agency, Philadelphia, 1938-1942, 45-64; physicist, Naval Air Experimental Station, Philadelphia, 1942-1945; president, The Dento-Medical Tapes, Upper Darby, Pennsylvania, 1957-1973; president, Associated television Prodns., Inc., Philadelphia, 1948-1952; president, Computerized Electronic Education, Upper Darby, Pennsylvania, 1969-1973; director continuing education, media instructional methodology, Pennsylvania College of Podiatric Medicine, Philadelphia, 1973-1977; private practice, audio and video tape analysis and voice identificationcons., Plantation, Florida, 1977-1996. Expert witness on tape recordings in over 250 trials. Seminar lecturer Texas Criminal Defense Lawyers Institute, Louisiana Public Defense Criminal Literature Seminar, Broward Criminal Defense Lawyers Association, Dade Criminal Defense Lawyers Association, Phoenix Public Defenders, Dade Federal Public Defenders.
Member NACDL (associate), National Forensic Center, International Association for ForensicPhonetics, American Federation Musicians, American Dialect Society, Audio Engineering Society (chairman forensic tape committee).
Married Lillian DuBowe, May 31, 1938 (divorced 1964). Children: Mark Blumenstein, Richard Blumenstein. Married Nancy Sher, October 24, 1988.