• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

非線形力学系理論に基づく超低消費電力非同期順序回路人工内耳モデルの設計手法の確立

Research Project

Project/Area Number 19J20745
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Review Section Basic Section 61040:Soft computing-related
Research InstitutionHosei University

Principal Investigator

武田 健太郎  法政大学, 理工学研究科, 特別研究員(DC1)

Project Period (FY) 2019-04-25 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2021: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2020: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2019: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords非同期離散状態システム
Outline of Research at the Start

人工内耳は音を電気刺激に変え,蝸牛管内に挿入された電極で直接聴神経を刺激することで脳に音を知覚させるインプラントである.現行の人工内耳の音声処理方法には,入力された音に対して短時間フーリエ変換によるスペクトル分析を行い,周波数成分の強度に従っていくつかの電極がその周波数に対応する聴神経へ電気パルスを送信する線形システムが用いられてられている.一方で生物の聴覚系は音声入力に対して非線形応答特性を呈することが知られており,現行の人工内耳ではそのような特性を再現することができない.本研究では蝸牛の非線形応答特性を考慮した小型・低消費電力人工内耳モデルを設計する.

Outline of Annual Research Achievements

本研究では、超低消費電力非同期順序回路人工内耳モデルの設計と実装及び実機実験を行う。本研究は、既存手法との比較を通して提案人工内耳モデルが消費電力や回路実装の観点で優れていることを示すことを目的とし、より効率の良い人工内耳回路の開発へ向けた基礎研究と位置づけられる。2021年度は主に次の2つのテーマに取り組んだ。(1)非同期式順序回路で実装される内耳モデルが呈する結合音現象に関する研究:これまでの研究では、内耳モデルの純音入力に対する非線形応答特性の調査に取り組んできた。当該年度では、内耳モデルの複合音入力に対する非線形応答特性の調査に取り組んだ。生物の耳は、異なる周波数成分を有する二音を聴取すると、それらの周波数成分の和の音や差の音を知覚できることが知られている。これらの音は結合音とよばれ、本研究では結合音現象を呈する非同期式順序回路内耳モデルを提案した。また、提案内耳モデルが従来のモデルに比べて高効率にハードウェア実装できることを示した。(2)非同期式順序回路で実装される位相発振器の結合系に関する研究:これまでの研究では、単一の非線形発振器による蝸牛のモデル化に取り組んできた。当該年度では、これらの発振器の結合系による蝸牛のモデル化を目標とした、非同期式順序回路で実装される位相発振器の結合系に関する予備的研究に取り組んだ。本研究では、非同期式順序回路で実装される位相発振器の結合系に基づいたCPGモデルを提案し、位相振動子の状態変数を非同期的に状態更新させることで、所望の歩行パターンをあらわす解が支配的になる場合があることを示した。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (16 results)

All 2022 2021 2020 2019

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (8 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Journal Article] Phase-locking phenomena in ergodically coupled CA phase oscillators and its theoretical analysis2022

    • Author(s)
      Kentaro Takeda, Hiroyuki Torikai
    • Journal Title

      Nonlinear Theory and Its Applications, IEICE

      Volume: 13 Issue: 2 Pages: 434-439

    • DOI

      10.1587/nolta.13.434

    • ISSN
      2185-4106
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A novel hardware-efficient auditory neuron model based on ergodic cellular automaton and its first pitch-shift effect2022

    • Author(s)
      Yui Kishimoto, Itsuki Kubota, Kentaro Takeda, Hiroyuki Torikai
    • Journal Title

      Nonlinear Theory and Its Applications, IEICE

      Volume: 13 Issue: 2 Pages: 391-396

    • DOI

      10.1587/nolta.13.391

    • ISSN
      2185-4106
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two-tone distortion products in hardware-efficient cochlea model based on asynchronous cellular automaton oscillator2021

    • Author(s)
      Takeda Kentaro、Torikai Hiroyuki
    • Journal Title

      IEICE Electronics Express

      Volume: 18 Issue: 18 Pages: 20210310-20210310

    • DOI

      10.1587/elex.18.20210310

    • NAID

      130008091835

    • ISSN
      1349-2543
    • Year and Date
      2021-09-25
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Smooth gait transition in hardware-efficient CPG model based on asynchronous coupling of cellular automaton phase oscillators2021

    • Author(s)
      Takeda Kentaro、Torikai Hiroyuki
    • Journal Title

      Nonlinear Theory and Its Applications, IEICE

      Volume: 12 Issue: 3 Pages: 336-355

    • DOI

      10.1587/nolta.12.336

    • NAID

      130008060808

    • ISSN
      2185-4106
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Novel Hardware-Oriented Recurrent Network of Asynchronous CA Neurons for a Neural Integrator2021

    • Author(s)
      Takeda Kentaro、Torikai Hiroyuki
    • Journal Title

      IEEE Transactions on Circuits and Systems II: Express Briefs

      Volume: 68 Issue: 8 Pages: 2972-2976

    • DOI

      10.1109/tcsii.2021.3063932

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Novel Ergodic Discrete Difference Equation Model of Central Pattern Generator: Theoretical Analysis and Efficient Implementation2021

    • Author(s)
      Sho Komaki, Kentaro Takeda, Hiroyuki Torikai
    • Journal Title

      IEEE Transactions on Circuits and Systems II: Express Briefs

      Volume: 69(3) Issue: 3 Pages: 1767-1771

    • DOI

      10.1109/tcsii.2021.3108846

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Novel Hardware-Efficient Central Pattern Generator Model based on Asynchronous Cellular Automaton Dynamics for Controlling Hexapod Robot2020

    • Author(s)
      Kentaro Takeda and Hiroyuki Torikai
    • Journal Title

      IEEE Access

      Volume: 8 Pages: 139609-139624

    • DOI

      10.1109/access.2020.3012706

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Novel Asynchronous CA Neuron Model: Design of Neuron-like Nonlinear Responses based on Novel Bifurcation Theory of Asynchronous Sequential Logic Circuit2020

    • Author(s)
      Kentaro Takeda, Hiroyuki Torikai
    • Journal Title

      IEEE Transactions on Circuits and Systems I: Regular Papers

      Volume: Volume 67, Issue 6 Issue: 6 Pages: 1989-2001

    • DOI

      10.1109/tcsi.2020.2971786

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] A novel asynchronous sequential logic model of central pattern generator for quadruped robot: systematic design and efficient implementation2021

    • Author(s)
      Sho Komaki, Kentaro Takeda, Hiroyuki Torikai
    • Organizer
      The 2021 International Joint Conference on Neural Networks
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synchronization phenomena of asynchronously coupled cellular automaton phase oscillators and its theoretical analysis2021

    • Author(s)
      Kentaro Takeda, Hiroyuki Torikai
    • Organizer
      The 2021 Nonlinear Science Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asynchronous CA Model of Central Pattern Generator2020

    • Author(s)
      Kentaro Takeda and Hiroyuki Torikai
    • Organizer
      The 2020 International Symposium on Nonlinear Theory and its Applications
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A novel hardware-efficient CPG model based on asynchronous coupling of cellular automaton phase oscillators for a hexapod robot2020

    • Author(s)
      Kentaro Takeda and Hiroyuki Torikai
    • Organizer
      The 2020 International Joint Conference on Neural Networks
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A novel hardware-efficient CPG model for a hexapod robot based on nonlinear dynamics of coupled asynchronous cellular automaton oscillators2019

    • Author(s)
      Kentaro Takeda, Hiroyuki Torikai
    • Organizer
      The 2019 International Joint Conference on Neural Networks
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asynchronous cellular automaton neuromorphic circuit: design of nonlinear responses based on design of bifurcation phenomena2019

    • Author(s)
      Kentaro Takeda, Hiroyuki Torikai
    • Organizer
      The 2019 International Symposium on Nonlinear Theory and its Applications
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非同期セルオートマトンに基づいたニューロンモデルの安定性解析について2019

    • Author(s)
      武田健太郎,鳥飼弘幸
    • Organizer
      2019年電子情報通信学会NOLTAソサイエティ大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 非同期順序回路の非線形現象とその応用2019

    • Author(s)
      武田健太郎,鳥飼弘幸
    • Organizer
      CCS/IN 合同ワークショップ
    • Related Report
      2019 Annual Research Report
    • Invited

URL: 

Published: 2019-05-29   Modified: 2024-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi