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Low power adder based auditory filter architecture.

P F Khaleelur Rahiman1, V S Jayanthi1

  • 1Department of Electronics and Communication Engineering, Hindusthan College of Engineering and Technology, Tamil Nadu 641032, India.

Thescientificworldjournal
|December 16, 2014
PubMed
Summary
This summary is machine-generated.

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This study introduces a low-power auditory filter for cochlear devices using a multiplierless lookup table (LUT) design. The optimized filter reduces leakage power by 15% and improves performance, extending device working life.

Area of Science:

  • Electrical Engineering
  • Biomedical Engineering
  • Signal Processing

Background:

  • Cochlear devices require long battery life, necessitating low-power components.
  • Auditory filters are crucial for processing frequency-variant signals to identify speech.
  • Existing filter designs may not meet stringent power consumption requirements.

Purpose of the Study:

  • To implement a multiplierless lookup table (LUT) based auditory filter for cochlear devices.
  • To reduce power consumption in cochlear implant signal processing.
  • To enhance the performance and working life of cochlear implants.

Main Methods:

  • Developed and modeled a multiplierless LUT-based auditory filter using Verilog HDL.
  • Utilized power-aware adder architectures for output sample summation.

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  • Simulated the design using Mentor Graphics Model-Sim and synthesized it with Synopsys Design Compiler.
  • Mapped the design to a TSMC 65nm technological node and performed power analysis using standard ASIC methodology.

    • Main Results:

    • The proposed FIR filter architecture achieved a 15% reduction in leakage power.
    • The design demonstrated a 2.76% increase in performance.
    • The multiplierless LUT approach proved effective for low-power auditory filtering.

    Conclusions:

    • The implemented multiplierless LUT-based auditory filter offers significant power savings for cochlear devices.
    • This design contributes to extending the operational lifespan of cochlear implants.
    • The optimized filter architecture enhances both power efficiency and performance in auditory signal processing.