WAHTS is an FDA-registered audiometer and meets current OSHA 1910.95, ANSI S3.6, and IEC 60645-1 standards. The WAHTS maximum permissible ambient noise levels (MPANLS) outperform other transducers at 250, 500, and 1000 Hz, making WAHTS ideal for boothless audiometry, where ambient noise is a concern. See Figure 1 below for WAHTS MPANL values.
The passive attenuation of WAHTS allows the system to be used accurately to test hearing in environments with ambient noise. Figure 1 shows the maximum permissible ambient noise levels (MPANLs) calculated for WAHTS in accordance with ANSI S3.1-1999 (R2018). Adjusted MPANLs are calculated by adding the passive attenuation of the transducer to the ears uncovered ANSI S3.1 values.