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  Products & Solutions     Telecom     Products     Noise Simulation     3PASS - Overview
3PASS (Code 6990) - 3-dimensional Playback of Acoustic Sound Scenarios
3PASS is the new HEAD acoustics system which is capable of preserving and reproducing the essential spatial characteristics of real-life background noise scenarios in different test rooms. Due to its three-dimensional approach it is especially suited for the evaluation of complex noise reduction algorithms, e.g. as often found in modern smartphones with multi-microphone arrangements.
The concept and methodology of 3PASS conforms to the new ETSI standard TS 103 224. A noise data- base as specified by the standard is included and is ready for use with 3PASS. 3PASS is a software for Windows® 7 Professional or Windows® 8/8.1 Pro which is used in conjunction with the     front end
as well as the    microphone surround array MSA I and the    HEAD measurement system
After automatic recognition of the connected hardware, all parameters are set via the software. All settings and subsequently created filters can be saved. Via  USB, all settings, filters and sound files are transferred to the front end. The equalization is conducted automatically via    labBGN and    MSA I.
The 3PASS system thus allows to preserve and reproduce the essential spatial characteristics of background noise.
The ETSI standard TS 103 224, which is based on the 3PASS system, was approved as the recommended simulation method for hands-free measurements in the presence of background noise in 3GPP standard TS 26.132 (version 13.2.0, Release 13).
3PASS test setup in anechoic room with HMS II.3, MSA I and 8 loudspeakers
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