Acoustic Information Laboratory

Let’s create a comfortable soundspace with an active noise canceller

We are aiming to realize the noise control of multi-channels, which changes parameters depending on situations, in order to create a comfortable soundspace. It is important to make measurements to pinpoint the position of a sound source or sound transmission paths since, in closed space, direct sounds from the sound source are superimposed with reflected sounds, creating complicated signals. It is, however, possible to erase the noise by generating antiphase sounds through an adoptive control with the full use of a computer exceled at calculations to maintain the optimal sound condition.

College of Engineering Computer and Communications Engineering Information and Communications Engineering / Graduate School of Engineering and Science（Master's Program） Electrical Engineering and Computer Science Course / Graduate School of Engineering and Science（Doctor's Program） Functional Control Systems Course
Faculty Name
MUTO, Kenji
Keyword
Acoustic,Speakers,Signal processing,Noise,Hearing

This lab is for this SDG activity:

  • 産業と技術革新の基盤をつくろう

STUDY FIELDS

  • Communication engineering
  • Information engineering
  • Electrical engineering
  • Electronic engineering

FOR SOCIETY

Headphones that erase the sound of the engine inside a plane and telephones that allow conversation without putting the receiver close to your ear are all equipped with a small computer that conducts digital signal processing, such as the measurement of sound fields and control of sounds.

RESEARCH THEMES

  • (1) Research of breakdown detection by machine learning of environmental sound
  • (2) Research of multichannel active noise control for quiet wide space
  • (3) Research of reducing impression of loudness by video
  • (4) Research of change in ventriloquism effect to movement of AV stimuli

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