In addition, the anechoic chamber comes equipped with speakers that are distributed across multiple directions, and are capable of playing multi-band sound. Engineers operating from the workbench have the speakers play a wide range of noise sources encountered in daily life. The noise is picked up by the simulated human head recording device to test and verify its acoustic characteristics.
Prior to the launch of the HUAWEI FreeBuds 4i, Huawei engineers had tested and verified the noise reduction performance of the headphones in many of the most common environments, such as in underground subways and cafes, to ensure that the headphones deliver optimally comfortable noise reduction at all times.
This type of anechoic lab is just one of many Huawei labs that perform groundbreaking R&D on a daily basis. The Huawei audio department has six R&D centers spread around the world and employs more than three hundred audio R&D engineers. In Europe, where acoustic research is most advanced, Huawei has established a number of audio labs, including the German Acoustic Research Center, which conducts noise analysis and AI noise reduction algorithm research, as well as the Finnish Multimedia Audio Lab, which conducts noise reduction tests for the different acoustic characteristics in audio products.
