An Earbud-Based Photoplethysmography and its Application

Yohei Tomita, Yasue Mitsukura

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This paper presents an earbud-based photoplethysmography (PPG) and its application. This PPG recording system permits long-term continuous monitoring of cardiovascular function since it can be worn comfortably on ears. Experimental investigations showed that stress and drowsiness could be estimated by analyzing measured PPG signals. Furthermore, noise suppression techniques for motion noises and ambient light interferences are introduced to make a recorded signal more acceptable.

Original languageEnglish
Pages (from-to)32-38
Number of pages7
JournalElectronics and Communications in Japan
Issue number1
Publication statusPublished - 2018 Jan


  • earbud-based photoplethysmography
  • kansei acquisition
  • noise reduction

ASJC Scopus subject areas

  • Signal Processing
  • General Physics and Astronomy
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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