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  Products & Solutions     NVH     Products     Binaural Recording Systems   
  Artificial Head System HMS IV - Product Description
HMS IV - HEAD Measurement System
  Current Note regarding the essential firmware update for HMS III, HMS IV and BEQ II
When running a recording with an HMS III, HMS IV or a BEQ II while synchronously online monitoring the recording, there might occur strong overloads during a range shift (reduction of the recording range).
The occurring overloads injure the sense of hearing seriously.
Using the current firmware for the afore-mentioned recording devices prevents overloads during the range shift by means of a delayed fading.
We strongly recommend all our customers to keep all existing HMS III, HSM IV and BEQ II recording systems updated to the latest firmware and thus to protect yourself from a possible danger and to benefit from the continuing improvements of the products.
The firmware can be downloaded from the download area of our website:
  http://www.head-acoustics.de/eng/essential_firmware_update.php
If you do not have the access data to this website available, please apply to your HEAD acoustics contact.
The artificial head geometry offers you:
a mathematically describable reproduction of the human head and shoulder geometry with an award-winning design
an accurate reproduction of all acoustically relevant parts of the human outer ear
 
The HEAD Measurement System IV is a stand-alone, mobile measuring device that is ready to perform aurally accurate binaural recordings immediately after powering up.
The recordings can be saved directly to a CompactFlash card, allowing stand-alone operation without a notebook or PC. Via the integrated headphone output, the recordings can be played back immediately with aurally accurate equalization.
Artificial head measurement systems like the HMS IV are compatible with conventional measurement technology and are necessary for an authentic hearing impression during playback.
Applications
Examination and optimization of the sound quality of technical products: motor vehicles and car components, domestic appliances, office machines and power tools
Binaural measurements in product development and quality control
Sound design and product optimization
For recording very low sound pressure levels, as they may occur e.g. in the IT industry, we recommend to use the    artificial head microphone HSU III.3.

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