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Discussion in 'ASIO music player' started by Symphy, February 15, 2009.

  1. nmt1978

    nmt1978 Portal Pro

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    Thank you for your prompt reply, i did add the extension and see my files. But playing the .dts or .wav resulting in noise only

    I don;t have ASIO. i am using window device "Realtek Digital Output"and onboard sound card ATI X3500 on my mainboard Gygabite GA EG45M-SH. i am on Vista

    Also what is bit perfect?>please help

     
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  3. Symphy
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    Symphy Retired Team Member

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    Ok been looking in the (working) standard player code lastnight, and i think i know whats going on. Because it comes down to a bass bug it may be solved with next plugin release, which uses bass 2.4. If not, i'll add a workaround.
     
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  4. Symphy
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    Symphy Retired Team Member

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    Bitperfect means all data comes out of the spdif exactly as is it on your disk, down to the last bit. For DTS playback this is absolutely nessecary. Now this may seem obvious for computer stuff, but in real life it isn't. Hardware, Windows and drivers often do all kinds of conversions, causing changes in the data.

    Bitperfect playback with standard windows devices is rare, the only working solution that i know of is c-media devices with specially designed 3rd part drivers.

    You should try ASIO4ALL. Several ppl have realtek devices working that way.
     
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  5. grubi

    grubi Portal Pro

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    See this link for a ver good explanation

    When you have any pre release for testing just let me know.
    Thanks again.

    grubi.


    PS:

    Found the following statement in an article about the drivers I use:

    It supports bitperfect playback for 16 bit sound streams at sample rates of 44.1kHz, 48kHz, 88.2kHz and 96kHz - this effectively covers almost all music on CDs and subsequent formats as well as audio from DVDs on sale today.

    Maybe this is releated to the problem.
     
  6. Symphy
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    Symphy Retired Team Member

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    Yep, it must go wrong at the conversion of the 32 bit float stream back to the 16 bit for DirectX. The default bass player uses a 16 bit stream internally (if upmixing disabled and not using asio) and thats why the problem does not occur there.
     
  7. grubi

    grubi Portal Pro

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    Any chance to get this fixed?
     
  8. Symphy
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    Symphy Retired Team Member

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    Yep, if it isn't fixed already in bass 2.4, i'll add my own float-16bit converter that does the job right :)
     
  9. grubi

    grubi Portal Pro

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    Great news.
    Thanks again.
     
  10. grubi

    grubi Portal Pro

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    As you are on Vista I doubt you will get bitperfect playback without ASIO. The reason is that the "audio service" of Vista in contrast to the "kmixer" of WinXP will always process the sound even if it is not necessary which leads to non bitperfect output (Isn't this relally an improvement :mad:). You will read a lot of nonsens about "bad" kmixer in the internet which is simply wrong so investigate carefully.

    So for Vista to get bitperfect you have the following choices if your hardware is capable of outputting the desired sample rates unaltered:

    Kernel streaming (which has already been marked deprecated in Vista)
    ASIO
    WASAPI

    As the first and the latter are no choice with MP because they are not supported ASIO is the only way to go.
    If your soundcard vendor doesn't offer native ASIO drivers (which is quite normal for consumer products) you can try ASIO4ALL which is a wrapper around kernel streaming which exposes an ASIO interface where the "outer world" like MP can connect to.

    HTH.
    grubi.
     
  11. phunqe

    phunqe Portal Pro

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    Installed MP 1.0
    Installed MP latest SVN.
    Installed ASIO Music player.
    Starting MP configuration -> Plugins

    Getting error "Failed to locate assembly 'Bass.Net', Version=2.3.1.2, Culture=Neutral, blablabla etc"

    Didn't configure anything else (was going to install everything first). Only thing I installed before this was latest Moving Pictures.
     
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