WAHTS is an FDA-registered audiometer that meets OSHA 1910.95, ANSI S3.6, and IEC 60645-1 standards. With superior Maximum Permissible Ambient Noise Levels (MPANLS) at 250, 500, and 1000 Hz, WAHTS outperforms other transducers, making it ideal for boothless audiometry in environments with ambient noise. 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.