- Audio Engineering Associates
 - Offering forensic audio services, gear sales, system design and installation and more. - CEDAR Audio
- Offers a line of audio restoration hardware and software systems for music production and forensic audio.
- Creative Forensic Services
- Specialises in forensic audio analysis of recorded evidence including noise removal, enhancement, authentication, and more.
- Forensic Sound
- Services include authentication, tape clean up, content identification, transcripts, and more.
 J P French Associates
- Independent forensic audio, speech and language specialists. Offering services in speaker identification, authentication, transcription, audio enhancement and other related areas.- Poza Consulting Services
- Expert testimony in forensic acoustics, which includes audio tape analysis and authentication, voice identification, and enhancement and transcription of noisy audio recordings.
- RMS Audio
- Offers restorative services for converting records into CDs and DVDs.
- Team Audio
- Offers forensic audio and video enhancement and restoration services.
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