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Audio Laboratory

 1.  Brief Introduction
TA Beijing Audio Lab was founded in 2008. There are three audio chambers, two for objective testing, and one for subjective testing. We have test engineers with rich experience and good technical competence. Since 2008, more than 400 projects had been finished successfully.

In 2011, Audio Lab had got the ISO/IEC 17025 certificate and passed the audit by China National Accreditation Service for Conformity Assessment (CNAS) successfully.

To be the aim of our service ‘Justice, Science, Accuracy, Secrecy’, it leads us to improve our quality continuously for our customers.

 2.  Test Facility and Equipment
Anechoic Chamber
Listening Room
Acoustic measurement system: UPL/UPV
Wave Lab measurement system
AP measurement system

 3. Test Capabilities
Objective and subjective audio testing for mobile terminal and accessories, including Hand Portable, Headset and Hand Free mode, Safety and Ringing Tone Loudness.

The main test cases are: 3GPP, Shock, EN50332, TDMA noise, Baseband Loop test, Music Player, Ringing tone Loudness calculation, Speech Quality, Magnetic Field Density and so on.

Unit testing for acoustic component, including frequency response and THD+N for speaker, microphone and receiver.
The main test cases are: Audio Speaker, Earpiece and MIC Sweep.

Audio R&D tuning.

 4.  Test Standards
YD/T 1538-2006
YD/T 1884-2009
3GPP TS51.010-1
3GPP TS 26.131
3GPP TS 26.132
EN 50332-1/-2
3GPP2 C.S0056-0

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