I am a 5th-year Ph.D. candidate in the Department of Computer Science at the University of Pittsburgh, advised by Dr. Longfei Shangguan and working closely with Dr. Tao Chen. I received my M.S. in Electrical and Computer Engineering from Boston University and a B.S. in ECE from the University of Massachusetts Amherst.

My research sits at the intersection of mobile computing, acoustic sensing, and wearable systems. I build sensing and computation technologies on commercial earphones, mobile devices, and custom hardware to improve human health, interaction, and safety. Recent work includes earable interfaces, in-air acoustic gesture sensing, and on-body health monitoring.

Mobile Computing Earable Sensing Acoustic Signal Processing Wearable Systems Human–Computer Interaction Hardware / PCB Design

News

  1. I am on the job market and looking for full-time positions.

  2. Be My Ears (Pheme) is accepted by UIST 2026. Thanks to all the collaborators!

  3. Ultrasonic In-Ear Detection for Earbuds is accepted by ICASSP 2026. This work was done during my internship at Bosch Research. Thanks to all the collaborators!

  4. Interned at Bosch in Sunnyvale, CA, as a Sensing Hardware Research Engineer Intern.

  5. Attended the 40th Sensors Converge Expo in Santa Clara.

  6. Selected as a MobiSys 2025 Rising Star.

  7. LeakyFeeder is accepted by SenSys 2025 (Best Paper Award Nominee). Thanks to all the collaborators!

  8. Our group had an opportunity to visit Senegal, focusing on low-power, low-cost devices for underserved communities.

  9. Asclepius won the Best Paper Award at MobiCom 2024. Thanks to all the collaborators!

  10. Vision paper “Towards Next-Generation Human Computer Interface Based On Earables” accepted by IEEE Pervasive Computing.

  11. EarVoice is accepted by MobiSys 2024.

  12. MAF is accepted by CHI 2024.

  13. Asclepius is accepted by MobiCom 2024.

  14. Two posters are accepted by SenSys 2022.

Publications

* co-first author

ICASSP ’26

Ultrasonic In-Ear Detection for Earbuds

Yongjie Yang, Thomas Rocznik, Nima Aghli, Ken Wojciechowski, Christoph Lang, Longfei Shangguan

IEEE ICASSP 2026, Barcelona, Spain, May 2026 · Paper

SenSys ’25 Best Paper Award Nominee

LeakyFeeder: In-Air Gesture Control Through Leaky Acoustic Waves

Yongjie Yang, Tao Chen, Zhenlin An, Shirui Cao, Xiaoran Fan, Longfei Shangguan

ACM SenSys 2025, Irvine, USA, May 2025

MobiCom ’24 Best Paper Award

Exploring the Feasibility of Remote Cardiac Auscultation Using Earphones

Tao Chen, Yongjie Yang, Xiaoran Fan, Xiuzhen Guo, Jie Xiong, Longfei Shangguan

ACM MobiCom 2024, Washington, D.C., USA, October 2024

MobiSys ’24

Enabling Hands-Free Voice Assistant Activation on Earphones

Tao Chen, Yongjie Yang, Chonghao Qiu, Xiaoran Fan, Xiuzhen Guo, Longfei Shangguan

ACM MobiSys 2024, Tokyo, Japan, June 2024

IEEE Pervasive

Towards Next-Generation Human Computer Interface Based On Earables

Yongjie Yang, Tao Chen, Longfei Shangguan

IEEE Pervasive Computing

CHI ’24

MAF: Exploring Mobile Acoustic Field for Hand-to-Face Gesture Interactions

Yongjie Yang, Tao Chen, Zipan Huang, Xiuzhen Guo, Longfei Shangguan

ACM CHI 2024, Hawaiʻi, USA, May 2024

Awards

  • CS50 Outstanding Research Fellowship University of Pittsburgh, 2026
  • Rising Star Award ACM MobiSys, 2025
  • Student Fellowship School of Computing and Information, University of Pittsburgh, 2025
  • Student Travel Grant ACM MobiSys, 2024