UNE-EN 60645-1:2017 Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry (Endorsed by Asociación Española de Normalización in November of 2017.)
2017UNE-EN 60645-1:2017 Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry (Endorsed by Asociación Española de Normalización in November of 2017.)
2015UNE-EN 60645-1:2015 Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone audiometry