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Poza Consulting Services
Expert services for audiotape authentication, voice identification and elimination, acoustic identification and transcription of noisy recordings.

Audiolex
Forensic examination and analysis of tape recordings and text evidence, including speaker identification, tape authentication and enhancement. Offering services in the United Kingdom and internationally.

W.S. Ataras Engineering, Inc.
Audio forensic services consisting of recording enhancement, transcription and authentication. Based in Maryland.

Forensic Communication Associates
Specializing in acoustics and recorded evidence, including speaker identification, and tape authentication, enhancement and transcription. Based in Gainesville, Florida.

Owl Investigations, Inc
Audio-video processing laboratory, based in New York, with digital capacities signal processing and voice identification.

Joel Charles
Florida consultant, offering computer analysis, ambient noise reduction, and voice identification, for litigation in state and federal courts.

Spencer Research Limited
Consultant forensic scientists and expert witnesses, based in the United Kingdom.

Audio Forensic Center
Subsidiary of San Francisco-based audio engineering consultants Charles M. Salter clarifies garbled or masked audio from recordings, and provides expert witness testimony.

NYC's Forensic Audio-Video Lab
Forensic audio-video authentication & identification. Tape enhancement and noise reduction. Expert witness, court qualified & court appointed.

BEK TEK
50 years combined experience in audio and video forensic investigations. Our services include tape authentication, voice clarity enhancement, expert witness services and more.