BS EN 60118-8:2006 Electroacoustics - Hearing aids - Methods of measurement of performance characteritics of hearing aids under simulated in situ working conditions
2006BS EN 60118-8:2006 Electroacoustics - Hearing aids - Methods of measurement of performance characteritics of hearing aids under simulated in situ working conditions
2006BS EN 60118-8:2005 Electroacoustics - Hearing aids - Part 8: Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
1985BS 6083-8:1985 Hearing aids - Methods for measurement of the performance characteristics of hearing aids under simulated in situ working conditions