Clean Audio Project

The Clean Audio Project was funded by the ITC and then Ofcom between 2003-2006.

The project took place as the rollout of digital television was beginning and investigated how the additional audio and data found in 5.1 surround broadcast could be used to improve TV sound for hearing impaired people.

Findings from the project led to the formation of the UK Clean Audio Forum and contributed to broadcast standards:

ETSI Standard TR 101 154, V1.4.1 (2000-07), Digital Video Broadcasting (DVB); Implementation guidelines for the use of MPEG-2 Systems, Video and Audio in satellite, cable and terrestrial broadcasting applications: Annexe E4,

Referenced as mandatory for clean audio provision in:

EBU – TECH 3333: EBU HDTV Receiver Requirements. 7.3 Clean Audio. Geneva, Switzerland,

Open IPTV Forum (2011), Open IPTV Release 2 Specification, Volume 2 – Media Formats [V2.0],

and NorDig Unified Requirements for Integrated Receiver Decoders for use in cable, satellite, terrestrial and IP-based networks.

Details can be found in the following publications:

Article: The Clean Audio Project: Digital TV as assistive technology
B.G Shirley, P Kendrick
Journal Technology and Disability
Publisher IOS Press
ISSN 1055-4181 (Print)
1878-643X (Online)Journal of Technology & Disability, 18, 31-41.
Article: The Effect of Stereo Crosstalk on Intelligibility: Comparison of a Phantom Stereo Image and a Central Loudspeaker Source
Ben Shirley, AES Member, Paul Kendrick, Claire Churchill
Sorry, no full text available at this site.
Journal of the Audio Engineering Society 10/2007; 55(10)
Thesis: Improving Television Sound for People with Hearing Impairments
Ben Shirley
12/2013, Degree: PhD, Supervisor: Dr Bill Davies