From: Clemens Ladisch <clemens@ladisch.de>
To: Rafal Powierski <powierski@mediascore.de>
Cc: alsa-devel@alsa-project.org, Dave Platt <dplatt@radagast.org>
Subject: Re: spdif input, source synchronous?
Date: Thu, 24 Jan 2013 12:49:43 +0100 [thread overview]
Message-ID: <51011FD7.5020405@ladisch.de> (raw)
In-Reply-To: <1B9FEF259F5D4B4F83CD1C9FF0CF0FDB@mediascore.mediascore.de>
Rafal Powierski wrote:
> ... ALC886 SPDIF input.
> The test results show that the input is not "source synchronous"
>
> It seams that my HDA clock is a bit slower then definition ( about -10ppm)
> Therefore resampling starts below -10ppm
> It probably means that when spdif signal is 0ppm, about 10ppm of samples are missing.
And real S/PDIF inputs probably are all over the map ...
> Is this a bug? or it is planed like this?
The HDA specification describes source synchronous streams, but does
not mandate them.
Apparently, the ALC886 does not support source synchronous streams.
A quick Google search shows only the WM8850 (which also has a real
sample rate converter).
Regards,
Clemens
next prev parent reply other threads:[~2013-01-24 11:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <50A17AEC.2080102@radagast.org>
2013-01-23 21:19 ` spdif input, source synchronous? Rafal Powierski
2013-01-24 11:49 ` Clemens Ladisch [this message]
2012-11-08 9:10 Rafal Powierski
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