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  1. #1
    Jahf
    Guest

    Multicast for sync'ed clients?

    I was playing a stream on 2 clients (1 PC, 1 SB) and noticed a
    significant difference in where the song was at when I stood where I
    could here both.

    Also, if I use Ogg->RAW it becomes very clear that my 802.11b AP just
    doesn't have the oomph to stream to the sync'ed RAW to both clients
    (each client starts "burping"). Switching to Ogg->MP3 with a high max
    bitrate and I can run at least 4 clients at the same time (NOTE: part of
    the problem is one of my clients, the SB, is far enough away from the AP
    that it only gets a weak link, but it is fast enough of a link to play
    RAW data when it is the only client).

    Question: What are the chances that the clients could have a multi-cast
    reception mode when they are sync'ed? I'm sure it is a significant
    amount of network coding, and I'm not even sure 802.11b properly
    supports multicast, but if it did it would significantly reduce the 2
    issues above and possibly others.

    Question: If I sync'ed 2 clients, the server is only doing the decoding
    once, correct? I am assuming so, but not certain after hearing the
    clients play the same stream out of sync (for lack of a better term)
    with each other. I am hoping that is just because one was an SB and the
    other was a SoftSqueeze client.

  2. #2
    Senior Software Engineer - Logitech/Slim Devices
    Join Date
    Apr 2005
    Location
    Ipswich, UK
    Posts
    1,394

    Multicast for sync'ed clients?

    Jahf,

    > Question: If I sync'ed 2 clients, the server is only doing the decoding
    > once, correct? I am assuming so, but not certain after hearing the
    > clients play the same stream out of sync (for lack of a better term)
    > with each other. I am hoping that is just because one was an SB and the
    > other was a SoftSqueeze client.


    At the moment SoftSqueeze does not sync correctly with hardware SB's.
    Funnily enough I was going to have another look at the problem this evening.
    When you play using sync with multiple hardware squeezeboxes it works really
    well. I really hope the SoftSqueeze will work as well soon, but so far I've
    not spotted what the problem is

    Regards,
    Richard

  3. #3
    Jahf
    Guest

    Multicast for sync'ed clients?

    >>Question: If I sync'ed 2 clients, the server is only doing the decoding
    >>once, correct? I am assuming so, but not certain after hearing the
    >>clients play the same stream out of sync (for lack of a better term)
    >>with each other. I am hoping that is just because one was an SB and the
    >>other was a SoftSqueeze client.

    >
    >
    > At the moment SoftSqueeze does not sync correctly with hardware SB's.
    > Funnily enough I was going to have another look at the problem this evening.
    > When you play using sync with multiple hardware squeezeboxes it works really
    > well. I really hope the SoftSqueeze will work as well soon, but so far I've
    > not spotted what the problem is


    Fair enough ... but I think the bandwidth savings with multicast are
    still work being investigated

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