The background to Forensic Audio

Forensic audio is the application of audio technology to the areas of criminal and civil law, security, and other matters of public interest. We can trace its beginnings to WWII, when it became important to be able to identify and understand voices broadcast by radio. This was when the spectrogram, or "voiceprint" was first developed.

The field has developed rapidly in the past twenty years, and digital technology has made possible techniques that were almost unimaginable in the middle of the 20th century. Systems based on these techniques are now in routine use worldwide, and are no longer the preserve of government agencies and military forces. Smaller legal organisations and forces use forensic audio systems on a daily basis, while other industries that benefit from such products include avionics and air traffic control.

CEDAR Audio's policy of continuous advance

CEDAR Audio is committed to supporting the law enforcement and intelligence communities and is proud to have contributed for nearly two decades in this field. We have supplied numerous noise reduction systems for live surveillance and monitoring, as well as advanced computer-based systems, desktop processors and rackmount modules that have been installed in police, counter-terrorism, drug enforcement and air traffic control laboratories worldwide.

Working together with our colleagues in Cambridge University, we have an on-going policy of continuous research and product development designed to increase our customers' ability to extract meaningful information from badly contaminated audio, and thus improve the accuracy, reliability and productivity of monitoring, transcription and audio forensic investigation.

Services

Since 1989 the company has offered a wide range of forensic audio services, including:

• Tape Enhancement
• Editing
• Tape Authentication
• CD duplication

You can view or download the Company's forensic services price list here. Please contact us directly for further details of these and other services.

You can view or download the Company's forensic newsletters here.

You can find more information on the CEDAR Cambridge adaptive filter pack here.

You can find more information on the CEDAR Cambridge Forensic Audio Starter System here.

Click on the icons below to view further details of CEDAR's involvement in the field.

Some of CEDAR's forensic users	CEDAR's forensic research	CEDAR's forensic work reviewed	CEDAR Forensic overview