If you have a microphone attached to this computer Click Here for a Sound Level Meter. Try making different noises and notice the dB level produced. Use the test tone to play a 1kHz sound. University of Salford, Salford, Greater Manchester M5 4WT, UK. Telephone: +44 (0)161 295 5000 | Fax: +44 (0) 161 295 5999 Contact D.Dewhurst@salford.ac.uk | accessibility statement | privacy statement