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Importance of step and impulse response

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

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  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.
  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

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

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