Artificial head supports low-noise measurements of ANC headphones
HERZOGENRATH, GERMANY. Measuring very low signal levels like idle noise of active noise cancellation (ANC) headphones requires highly accurate measurement equipment. With HMS II.3-LN (Low Noise), HEAD acoustics is launching a new artificial head that is suitable for low-noise measurements of close-to-the ear sound sources. Ear simulators with highly sensitive microphones assure a very low inherent noise of 16 dBSPL(A) of the binaural artificial head measurement system. Therefore, it is suited to assess the quality of ANC headsets and headphones as well as other close-to-the-ear audio and telecommunication equipment. HMS II.3-LN complies with the international standard ITU-T P.58 and is based on the standards ITU-T P.57 and IEC 60318-4.
Due to its maximum sound pressure level of 149 dBSPL, the HMS II.3-LN is also suitable for medium- and high-level measurements. The ear simulator covers the complete human hearing range. The new artificial head is equipped with a two-way mouth loudspeaker capable of full-band measurements. The transmission range in sending direction is from 50 Hz to 20 kHz and in receiving direction from 3 Hz to 20 kHz. Like all artificial head measurement systems from HEAD acoustics, HMS II.3-LN can be optimally controlled via the measuring and analysis software ACQUA.