Background noise degrades speech intelligibility during communication via telecommunication terminals and impairs the performance of voice recognition systems. To evaluate device performance under noisy environments, authentic and repeatable tests are essential. A qualified background noise simulation system consists of hardware for recording, equalization and playback, as well as master control software. Developed by Landtop, 3DEQ-Lab is the ideal solution meeting all such demands.

3DEQ-Lab can reproduce recorded background noise scenarios while retaining original spatial characteristics, perfectly suited for the development and evaluation of sophisticated noise suppression algorithms. It enables performance assessment of modern smartphones, ANC headphones, ANC headsets, smart speakers, conference terminals and other hands-free communication devices under real-world operating conditions.

It realizes automatic digital system equalization via LMSA I microphone surround array or artificial ears. Featuring an asymmetric layout with 8 microphones (2 on the left, 1 at the front and 5 on the right), LMSA I achieves optimal equalization effect matching typical microphone positions of mobile phones.

Main Features

■ Compliant with ETSI TS 103 224 standard

■ Built-in automatic digital system equalization

■ Dedicated noise equalization modes for handheld, hands-free and desktop devices

■ Applicable to testing of ANC headsets, over-ear headphones and hearing aids

■ Binaural equalization for artificial heads conforms to 3GPP TS 26.132 and TS 103 224

■ Embedded standard background noise database

■ Remotely controllable via AaSQ and SRbots

■ Reproduce background noise at DUT positions in compliance with TS 103 224

■ Support test scenarios for handheld devices, hands-free devices, desktop hands-free devices and binaural headsets

■ Handheld test configuration with binaural equalization (conform to 3GPP TS 26.132 and ETSI TS 103 224)