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FREQ.

Discussion in 'General Electronics Discussion' started by biferi, Dec 15, 2016.

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  1. biferi

    biferi

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    Oct 12, 2016
    I do some Audio and some Video Editting.

    I know CDs are recorded at 16 Bit and 44100 Hz.

    What is 16 Bit at 48000 used for?

    Is this what they used when they Recorded on TAPE?
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    11,513
    2,651
    Nov 17, 2011
    Can be used for many purposes, e.g. for DVD audio.

    Classical recording on tape was analog, no bits, no sampling rate.
    Digital audio on tape also exists (e.g. DAT) using different sampling rates, e.g. 48, 44.1 or 32 kHz.

    Read a bit e.g. in the Wikipedia: https://en.wikipedia.org/wiki/Digital_audio
     
  3. biferi

    biferi

    46
    0
    Oct 12, 2016
    Well I know CD Audio is 16 Bit at 44100 Hz.

    So why don't they use this for DVDs?

    Why are DVDs 48000 Hz?
     
  4. davenn

    davenn Moderator

    13,833
    1,950
    Sep 5, 2009
    the higher samples / sec gives a higher audio quality
    The DVD has the storage capacity for the higher sample rate than what a CD does, so they make use of that extra space

    ohhh and DVD audio sample rates are not fixed at 4800 sps, there are considerably higher rates used as well


    Dave
     
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