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  • an anti aliasing filter is which type of filter

    aarthivg

    Member

    Updated: Oct 14, 2024
    Views: 1.1K
    An anti aliasing filter is analog or digital filter?
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Replies

  • yahia zakaria

    Member • May 6, 2012

    i think it is analog filter
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  • pavani abburi

    Member • May 11, 2012

    It must be an analog filter. The high frequencies must be attenuated before any digital sampling takes place, to ensure that these high frequencies are not sampled as false signals

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  • Sindhu Chowdary

    Member • May 30, 2012

    anti aliasing filter is simply a LOW PASS FILTER......the only important thing is the cut off frequency of the lpf used......it is used in accordance with the aliasing effect.....
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  • Sagar07

    Member • Jun 14, 2012

    Well, I remember the question regarding anti-aliasing filter which was asked by the interviewer of Texas Instruments....
    "What exactly the anti-aliasing filters do??"
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  • Sindhu Chowdary

    Member • Jun 14, 2012

    Sagar07
    Well, I remember the question regarding anti-aliasing filter which was asked by the interviewer of Texas Instruments....
    "What exactly the anti-aliasing filters do??"
    i think you know about aliasing effect during sampling.......
    Anti-alias filters are used to limit the bandwidth of a signal being input to a sampled
    system, such as a digital audio system, so that it is less than one half the system
    sample rate. This is required to avoid ambiguity resulting from the sampling process
    - which represents all signals as being within a frequency bandwidth defined by a
    ‘folding’ frequency of one half of the sample rate. Signals sampled at a frequency
    outside this range are ‘aliased’ so that they are indistinguishable from frequencies
    within it.
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