Dr. Vermiglio's research is in the area of speech recognition in noise. He taught audiology courses at California State University, Northridge for four years.
Prior to entering academia Dr. Vermiglio worked as a Senior Research Associate at the House Ear Institute (HEI) in Los Angeles. At HEI he worked in the Department of Human Communication Sciences and Devices under the direction of Dr. Sigfrid Soli and in the Department of Auditory Electrophysiology under the direction of Dr. Manny Don.
Dr. Vermiglio is one of the developers of the Hearing in Noise Test (HINT) and the Source Azimuth Identification in Noise Test (SAINT). He has also worked as a clinical audiologist for the Veterans Administration Medical Center in Long Beach, California and at the House Ear Clinic, in Los Angeles, California.