Served acoustic system design for smartphones and accessories by recommending acoustic components from database and other projects. Participated with hardware design review for avoiding electrical noise. Based on telecoms' standard to evaluated placement of transducers ex, speaker, receiver, and microphones and sealing design. Led junior engineers to execute plan of failure analyzing and analyzed fail symptoms to find evidence. Proposed design change items for yield promotion. Researched and evaluated new features and components Projects : Pixel 3a : Solved assembling and material issue and promoted yield rate over 97.5%. Sharp S2 : Designed an acoustic tunnel for receiver and mics by using middle frame to meet ID requirement. Nokia D1C : Integrated switcher into the system for 2 in 1 usage RCV and SPK by one transduce

Researched algorithms and edited scripts for development and verification of sound effects. Promoted signal's resolution by improving existing algorithms. Projects : Developed library of sound effect by filter design. Ex, IIR EQ, Bass /Treble, DRC and ITD.etc Enhanced signal resolution from 44.1 kHz/16 bits to 48 kHz/24bits by modifying

Proposed placement of transducers, such as speaker, enclosures, and microphone for high-quality acoustic performance of laptops pads and AIOs . Provided vibration solutions to ease distortion of devices. Improved functions of playback and recording by DSP fine-tuning. Enhanced characteristics of speaker drivers by co-working with vendors. Surveyed and built-up prototypes to evaluate performance of third - party's solution Ex, ICs, and transducers and algorithms. Participated innovations of new features and gave summarization for acoustic and audio usages Ex, mode quantities, firing direction of sound ports Edited technical documents and replied to marketing departments. Projects : NX500 : Integrated specific sound effects which was developed by internal resource into the system and speakers with metal diaphragm.

Executed audio system validation plan at board level. Solved issues of audio signal and mechanical distortion at system level. Enhanced listening quality of LCD-TV by DSP fine-tuning. Served technical assistances to counterparts while on-site supporting. Projects :