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DIFFERENCE BETWEEN WIDE BAND AMR AND AMR

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  • #68507 Reply
    NKARAN
    Guest

    Hi PIX,

    What is differnce between widband amr and amr.
    does it improve network performance??

    #68508 Reply
    gm
    Guest

    Traditional telefone systems transmit audio signals from 0,3kHz to 3,4kHz. This is also the audio bandwidth transmitted by standard AMR/FR and AMR/HR speech codecs.

    However, the human voice also contains spectral components below and above that band. In simple words: spectral components below 0,3kHz make the transmitted human voice signal to appear warmer, and the spectral components above 3,4kHz more natural. The new AMR/wideband codecs are capable to transmit a much higher audio bandwidth. They represent one of the biggest improvements of voice quality in the history of telecommunications.

    #68509 Reply
    pix
    Guest

    hi,

    it doesn not improve network KPI, but it improves end user voice quality.

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