World Health Organization – Guidelines for Community Noise is a systematic review of scientific evidence regarding noise, annoyance, speech and hearing impairment. The document provides also relevant guideline values. Extract 1 Interference with communication Speech (3.3) “Longer reverberation times, especially when combined with high background interfering noise, make speech perception more difficult. Even in a […]
Education
Assessment of noise with respect to its effect on the intelligibility of speech
International Standard ISO/TR 3352:1974 “Acoustics – Assessment of noise with respect to its effect on the intelligibility of speech” provides methods for measurement and assessment of noise with respect to intelligibility. Example For a speech interference level of 35 dB, the maximum distance at which raised voice is considered to be satisfactorily intelligible is 15 […]
