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  • =?UTF-8?Q?Is_there_way_to_convince_Mac=e2=80=99s_Audio_MIDI_Setup_p?= =

    From Robert Peirce@21:1/5 to All on Sat Oct 6 10:58:26 2018
    I asked this in comp.sys.mac. misc but I just thought somebody in rec.audio.tech might have a solution.

    I have 6600 tracks encoded at 192kHz with Pure Vinyl and bookmarked in
    iTunes. I have a DAC that can accept a 192kHz signal and downsample it
    to its native rate of 96kHz, BUT the DAC shows up in AMS as 96kHz. Pure
    Music sees this and downsamples the signal to 96kHz. HOWEVER, for
    reasons known only to Rob Robinson, a downsampled signal can only be
    played from disk and a bookmark can only be played from memory. Hence, nothing!

    At this point there is no way to get the DAC to say it is 192kHz and the
    only idea I have is to convince AMS the DAC can accept 192kHz even tho
    it seems as if it can’t. Does anybody know of a way to do that?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Robert Peirce@21:1/5 to Robert Peirce on Tue Oct 9 11:42:33 2018
    On 10/6/18 10:58 AM, Robert Peirce wrote:
    I have 6600 tracks encoded at 192kHz with Pure Vinyl and bookmarked in iTunes.   I have a DAC that can accept a 192kHz signal and downsample it
    to its native rate of 96kHz, BUT the DAC shows up in AMS as 96kHz.  Pure Music sees this and downsamples the signal to 96kHz.  HOWEVER, for
    reasons known only to Rob Robinson, a downsampled signal can only be
    played from disk and a bookmark can only be played from memory.  Hence, nothing!


    This works but it is hardly obvious. I created an aggregate device in
    Audio MIDI Setup that contains both DACs. I made the 192kHz DAC the
    Clock source and set it to 192kHz. I made the 96kHz DAC the output DAC.
    I made the aggregate the output in Pure Music’s audio setup.

    I am not a software guru so I’m only guessing but I think the 192kHz DAC
    is telling Pure Music it is okay to send the audio aggregate a 192kHz
    signal and that signal is being sent to the 96kHz DAC, which is capable
    of playing 192kHz signals if you can get them to it. I have searched
    the internet and can find no explanation of how audio aggregates
    actually work, so this is pure guess-work.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)