Summary

This ITU-T Recommendation specifies the use of Head and Torso Simulator (HATS) for hands-free terminals subjective and objective evaluations (e.g. ITU-T Recommendation P.340). It defines the test arrangements, the mouth calibration, the binaural equalization and loudness summation, as well as the method for headphone calibration to be applied for subjective third-party listening tests as described in ITU-T Recommendation P.832.