Ambassador dummy head
•This dummy head is compliant with IEC 60959, and is specifically manufactured for testing “internal” hearing aids
•The microphones have been calibrated, removing the pinna, and inserting over the capsule a Bruel & Kjaer type 4100 reference sound source, which provides a pure tone at the frequency of 1 kHz and with an RMS sound pressure level of 94 dB (1 Pa).
•The calibration signal was employed for setting the calibration of the SpectraRTA program, as shown here:
