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A/D Conversion

Discussion in 'AV Receivers & Amplifiers' started by agendrano, Oct 13, 2003.

  1. agendrano

    agendrano
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    Does a 192 Khz/24 bit and 96 Khz/24 bit A/D conversion have audible difference?
     
  2. ANDY_DUTTON

    ANDY_DUTTON
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    If all other things are kept constant then yes. The problem is that 96/24 or 192/24 is not the whole story.

    You need to get the analogue signal to the ADC first then you can create a good 192K / 24bit ADC or a not so good one.

    Also at these high resoloutions the clock needs to be very stable so even a small amount of jitter on the master clock could ruin any advantage you had from using a higher sample rate in terms of the soudn quality.

    Also it depends on your source, I assume if you are using the ADC it is for a analogue source to provide pro logic decoding. For most of the available sources the sound quality is likely to be limited by the transmission or decoder. This is certainly the case for VHS, FM and I belive SKY is MPEG encoded so that will already be band limited and critical band encoded.

    So in the end the best way to judge these things does tend to be by listening to them. Certainly look at the specification but don't be to baised by it a good 48KHz / 16bit system will sound better then a bad 192KHz / 24 bit system. Conversly a good 192KHz / 24bit system is clearly much better than a good 48KHz / 16bit system.

    Regards,
    Andrew
     

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