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Related Experiment Videos

A programmable-delay line.

J L Schiano, C Trahiotis

    Hearing Research
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a simple audio signal delay circuit, offering precise delays from 0 to 4000 microseconds. It provides a reliable and accurate alternative to existing audio delay methods.

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    Area of Science:

    • Electrical Engineering
    • Signal Processing

    Background:

    • Traditional audio delay methods often suffer from limitations such as complexity, inaccuracy, or limited delay ranges.
    • There is a need for a simple, accurate, and versatile audio delay solution for various applications.

    Purpose of the Study:

    • To describe a novel, simple circuit for programmable audio signal delay.
    • To evaluate the performance characteristics of the developed audio delay circuit.

    Main Methods:

    • The circuit utilizes a digital programming approach with twelve TTL-level data lines for delay selection.
    • The design focuses on achieving a flat magnitude response and linear phase response within the audio frequency range.
    • The circuit's gain is designed to be fixed and independent of the selected delay time.

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    Main Results:

    • The circuit provides programmable audio signal delays in discrete steps of 5 microseconds, ranging from 0 to 4000 microseconds.
    • The device exhibits a flat magnitude response and linear phase response from DC to 5 kHz.
    • Delays are accurate to within 1 microsecond of the programmed value, ensuring high precision.
    • The circuit's gain remains constant regardless of the chosen delay setting.

    Conclusions:

    • The described circuit offers a simple yet effective solution for precise audio signal delay.
    • Its accuracy, wide delay range, and stable frequency response make it a superior alternative to existing methods.
    • This device presents a valuable tool for audio engineering and signal processing applications requiring controlled signal timing.