James A. Griffin
- Professional audio and video experience to serve clients in the legal arena.
- http://www.forensictape.com/

Stutchman Forensic Laboratory
- Provides expert forensic enhancement and analysis in audio, video, and photographic imaging.
- http://www.stutchmanforensic.com/

BEK TEK LLC
- Forensic audio and video services, including authentication, voice and video enhancement.
- http://www.bektekllc.com

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.
- http://www.audiolex-forensic.com

Team Audio
- Specializing in forensic audio restoration and enhancement for the criminal justice system, the legal community, private investigators, broadcast and media, as well as private individuals.
- http://www.audiorestoration.com/

Barry G. Dickey, DABRE
- Laboratory analysis of audio and video evidence, digital enhancement, voice identification/elimination, environmental acoustics, piracy, transcription. Based in Arlington, Texas.
- http://www.audioevidencelab.com/

Legal Audio: Sound Services for Lawyers.
- Analog and digital audio recording, editing, enhancement, conversion, and database management for the legal profession.
- http://www.legalaudio.com/

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

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.
- http://www.audioforensics.com/

Spencer Research Limited
- Consultant forensic scientists and expert witnesses, based in the United Kingdom.
- http://www.spencerresearch.demon.co.uk/

Owl Investigations, Inc
- Audio-video processing laboratory, based in New York, with digital capacities signal processing and voice identification.
- http://www.owlinvestigations.com/

Forensic Communication Associates
- Specializing in acoustics and recorded evidence, including speaker identification, and tape authentication, enhancement and transcription. Based in Gainesville, Florida.
- http://www.forcomm.com/

W.S. Ataras Engineering, Inc.
- Audio forensic services consisting of recording enhancement, transcription and authentication. Based in Maryland.
- http://www.wsaeng.com/TAFS/

Poza Consulting Services
- Expert services for audiotape authentication, voice identification and elimination, acoustic identification and transcription of noisy recordings.
- http://www.poza-consulting.com/