Hui Yan Email & Phone Number

Sippy Downs, Qld, Au

澳大利亞

Work From Home

* AGC and LPC algorithm simulation to improve in-ear sound quality. Implement the float point algorithm in matlab on fix point LPC43XX m4 processor. Benchmark fix point implementation for MIPS/power consumption estimate.* In charge of creating cmocka based unit test framework for current embedded C code to improve code quality. * In charge of embedded side design for PCB test project. Based on Arduino Teensy3.6 C++ library, the test firmware support both periodic and single… Show more * AGC and LPC algorithm simulation to improve in-ear sound quality. Implement the float point algorithm in matlab on fix point LPC43XX m4 processor. Benchmark fix point implementation for MIPS/power consumption estimate.* In charge of creating cmocka based unit test framework for current embedded C code to improve code quality. * In charge of embedded side design for PCB test project. Based on Arduino Teensy3.6 C++ library, the test firmware support both periodic and single measurement according to the input command line from USB. The system is implemented in C++ using observer design pattern.* Bluetooth module refactoring and PTTOC feature implement: redesign the state machine to reduce the complexity by 50%. PTTOC feature is to support headset PTT(press to talk) over visual radio app on mobile.* System sampling rate redesign to save MIPS and enhance power consumption.* VOX (Voice Activity Detection to trigger PTT) algorithm research to lower false alarm caused by non speech high volume industrial noise including impulsive noise like jackhammer and gunshot.* Android development for parameter setting app. Show less

Sunshine Coast,Qld,Australia

Connectors (middle ware) development:*JavaEE programming based on vertx framework to do connectors development for sensor data collection in big data processing chain for smart city project.*Use python and latex to develop automatic parking data illustration tools for ENBW sensor: python to read and plot data and latex to do layout and generate PDF illustration file.

Shenzhen, Guangdong, China

DSP algorithm implement on VoIP produce line.*OPUS/EVS CODEC development on mindspeed DSP and CEVA DSP. *Common features (echo canceller, noise suppression ,AGC, tone detect) development on CEVA DSP.*Music/noise discrimination algorithm research * Working with ARM team on soft DSP project, porting current system from ARM RTXC to X86 linux.

DSP firmware development on ADSL productnote: Broadband Access Apartment of conexant was acquired by ikanos on August,2009.

DSP firmware development in pseudo-ASM:*New INP+ (Impulse Noise Protection) function in ADSL2+ Annex B project: With the bigger interleave depth, it enhances system INP by RS coding. *Line attenuation estimate in DELT (Dual End Loop Dialogue) mode in ADSL2. Compensate analog and digital AGC impact, Rx filter impact. *In charge of trace project for field issue: Trace the DSP status and exchanged message during the initialization before the failure happens. Pass the real-time trace… Show more DSP firmware development in pseudo-ASM:*New INP+ (Impulse Noise Protection) function in ADSL2+ Annex B project: With the bigger interleave depth, it enhances system INP by RS coding. *Line attenuation estimate in DELT (Dual End Loop Dialogue) mode in ADSL2. Compensate analog and digital AGC impact, Rx filter impact. *In charge of trace project for field issue: Trace the DSP status and exchanged message during the initialization before the failure happens. Pass the real-time trace information through API to help locate failure. *Implement Annex M upstream bit swap function. This function can allocate bits on each bin dynamically according to its SNR which improve upstream performance. 2. Customer R&D consultant: Support China and global customers (ZTE/HUAWEI/NOKIA etc) on DSP firmware level. Show less

Master, Electronic Engineerring

Bachelor, Electronics Engineering