Fun in the Lab
Each failure is simply a valuable opportunity to try again, this time more wisely and informed.
Experiment
Cancelling Crosstalk at the Mastoid
I've demonstrated how sound from the right vibrator is minimized at the accelerometer using anti-sound from the left vibrator.
Tutorial
DIY Silicone Pinna
I documented the process of making a silicone pinna, providing detailed steps for those interested in a similar project.
Experiment
3D-Printed Connected Stethoscope
I recorded heart sounds using a smartphone and a 3D-printed stethoscope, which is an upgrade from my previous one.
Experiment
Real-Time Crosstalk Cancellation
I developed a system for canceling crosstalk in bone conduction (BC) using the Bela Mini embedded audio platform.
Experiment
Hearing Threshold
I made a simple demo video showing how I measured my hearing threshold, the minimal sound level which can still be perceived.
Experiment
Bone Conduction Authentication
Authenticating registered users and rejecting unknown ones using bone-conducted sound and machine learning.
Experiment
Smartphone Case Stethoscope
The Smartphone Case Stethoscope is an attachment that turns a smartphone into a digital stethoscope by using a case-like design.
Experiment
StethoPhone
StethoPhone, a low-cost digital stethoscope created using 3D printing technology, is designed for use with smartphones.
App Development
StethoPhone App
I am developing an Android app with basic functionalities such as audio streaming, filtering, recording, and file sharing.
Experiment
Localization using Machine Learning
This project aimed to implement real-time sound localization using a Support Vector Machine algorithm.
Experiment
Spatial SpeechFocus
The goal of this project is to implement a binaural speech enhancement method on a single-board computer for real-time usage.
App Development
Hearing Assistance App
This project aimed to implement "Spatial SpeechFocus" (check the previous video) on an Android smartphone.
Simulation
HomeworkPeople Detection
This project was a part of my team's homework in an image processing course at Kumamoto University (1st-year master course).
Experiment
Back-to-Back Speaker System
This project aimed at creating a directional loudspeaker system made up of just two speakers positioned back-to-back.
Experiment
Pink NoiseFront–Back Discrimination (1)
We developed and tested an algorithm for identifying front and back sound origin, using pink noise in an anechoic chamber.
Experiment
Normal Room - Pink NoiseFront–Back Discrimination (2)
We tested our algorithm for sound localization in a typical room with pink noise, with the highest peak indicating the "true" direction.
Experiment
Normal Room - Speech SignalsFront–Back Discrimination (3)
We tested our localization algorithm in a normal room using speech signals. The algorithm still sometimes confused front and back directions.
Research Idea
Human SubjectsBone Conduction Hearing
Our investigation aimed to cancel cross-talk for bone-conducted sounds, as shown in the video only animation, no sound.
Experiment
Normal RoomGCC-PHAT
I made a simple real-time sound localization using the GCC-PHAT algorithm, not the FDBM algorithm as stated in the video.