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  1. #1
    Junior Member
    Join Date
    Jul 2005
    Posts
    1

    NewB Sample rate Qn

    I was reading the spec pages on SB2 and came across something that confused me. Regarding the Digital S/PDIF outputs the spec says "Sample rates: 44.1Khz, 48Khz ". More complete text for digital outputs reproduced at end from:
    http://www.slimdevices.com/pi_specs.html

    My question is: are the sample rates mentioned in there different from the MP3 and other bit-rates...192K MP3, for instance ?????

    If the SB2 ends up processing FLAC or other lossless stream, will I get "lossless" digital stream on the digital out? I plan to stream that into a Rotel pre-amp for 2-channel listening. If there is information loss, I might as well use an iPOD dock and save a bit of hassle.

    Thanks, in advance, for your responses.


    Digital S/PDIF outputs
    ======================
    Optical and coax digital connections
    Dedicated high-precision crystal oscillators (no PLL, no resampling)
    Standard IEC-958 (S/PDIF) encoding
    Optical connector: TOSLINK 660nm
    Coax connector: RCA, 500mVpp into 75 ohms
    Sample rates: 44.1Khz, 48Khz
    Audio format: linear PCM, 16 or 24 bits per sample

  2. #2
    Senior Member pfarrell's Avatar
    Join Date
    Apr 2005
    Location
    Wayne, PA
    Posts
    4,251

    NewB Sample rate Qn

    On Fri, 2005-07-29 at 18:54 -0700, YNM wrote:
    > My question is: are the sample rates mentioned in there different from
    > the MP3 and other bit-rates...192K MP3, for instance ?????


    The mp3 "rates" are delivery file stream rates.

    The SqueezeBox rates refer to raw audio sample rates.
    All normal CDs are 44.1 k samples per second. Since these
    are defined as two channel 16 bits per sample, you take
    44100*2*16 and get 1,411,200 bits per second.

    Roughtly 8 times the data of your example 192K MP3

    > If the SB2 ends up processing FLAC or other lossless stream, will I get
    > "lossless" digital stream on the digital out?


    yes. perfectly lossless.



    --
    Pat
    http://www.pfarrell.com/music/slimse...msoftware.html



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