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Importance of step and impulse response

Discussion in 'General Electronics' started by Abhishek Singh, Jan 18, 2004.

  1. Hi,
    I am tyring to understand- what exact information about a
    linear-time-invariant system, can be obtained from its impulse and
    step response. I understand how step response can be derived from the
    impulse response and vice versa. But I am not clear about what
    information (for example transient or steady-state etc) these
    responses provide about the system. Is there anything extra that one
    provides and other cannot?

    Any comments would be appreciated.
    -Aby
     
  2. Grumpy OM

    Grumpy OM Guest

    From what I recall an impulse is not physically realizable, but
    I've modeled it as a million volt, 1 uS pulse. It simulates a freq
    generator of infinite bandwidth and unity amplitude. When introduced
    into the input of an amplifier or filter the output will be the freq
    response.

    I find the step useful from a practical standpoint for testing the
    behaviour of tone controls on stereo systems.

    Grumpy
     
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