Liftering, its physical significance

pratap singh, upendra

pratap singh, upendra

@pratap-singh-6xlmve • Oct 26, 2024
What is the physical significance of liftering done to an analog signal (particularly an audio signal)?

What is its role pertaining to MFCC feature extraction process?
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  • Sindhu Chowdary

    Sindhu Chowdary

    @sindhu-chowdary-tDAv1D • Aug 3, 2015

    MFCC is a feature used in Automatic Speech Recognition.To understand the liftering concept , first you need to understand the concept of Cepstral Analysis.

    Speech is a mixture of vocal tract and input exitation.Liftering is a method used to separate the vocal tract and the excitation sequence in the frequency domain.You can say that Liftering is somewhat similar to filtering in frequency domain. In filtering , normally we multiply the whole spectrum with a desired rectangular window. Simialrly in liftering also

    But your question is far too wide to answer exactly. Refer to the links below.Hope they might be helpful for you to understand.

    <a href="https://iitg.vlab.co.in/?sub=59&brch=164&sim=615&cnt=1" target="_blank" rel="nofollow noopener noreferrer">iitg.vlab.co.in</a>

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