During the internship at GoerTek Inc., the focus was primarily on the analysis and optimization of acoustic systems for “True Wireless Stereo Earbuds”, so-called TWS devices. The main responsibilities included conducting both subjective and objective tests based on acoustic performance, evaluating products through metrics such as frequency response curves, distortion curves, and manual listening tests. Error analysis was performed on products that received negative evaluation results. This work led to effective modifications during the product development phase, enhancing acoustic performance, and corrective measures were proposed for defects in mass production. This experience provided a comprehensive understanding of acoustic device design and the factors influencing acoustic performance.

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