 |
HMS II.3-LN (Code 1230.3)
Head Measurement System with Low-Noise Ear Simulator and Mouth Simulator |
|
|
| HMS II.3-LN contains a low-noise ear simulator based on IEC 60318-4. Besides all measurement scenarios covered by HMS II.3 (handheld / handsfree telephony), it is ideally suited for high precision acoustic measurements of headsets, headphones, earphones and in-ears with and without active noise cancellation. |
| Its exceptionally low intrinsic noise level of 16 dBSPL(A) allows measurements at very low SPL levels. Combined with an upper SPL limit of 148 dBSPL, HMS II.3-LN sets a new standard unrivaled by other artificial heads in the field. |
|
| Anatomically shaped pinnae (type 3.3) enable conclusive measurements of in- / on- / over-ear devices. By replicating the human anatomy according to ITU-T P.58, HMS II.3-LN also supports arbitrary free-field measurement scenarios. The ITU-T P.58-compliant artificial mouth of HMS II.3-LN reproduces the complete spectrum of human voice with a low-distortion two-way design, allowing high-quality super-wideband and fullband measurements. |
|
|
|
|
|
|
|
HMS II.3-LN - Overview
