At 11:17 20-03-14, Paul Hodges wrote:
I understand that the current Windows SRC is pretty good, actually.
I probably know less about this than you do. But do you mean Windows
8? Windows 7, which I am using appear to have a problem, but with a
secret fix that I havent tried yet:
http://support.microsoft.com/kb/2653312
http://www.indexcom.com/tech/WindowsAudioSRC/
The biggest problem is in knowing what actually goes on behind the
scenes. I have recorded the broadcasts with Samplitude set to
48k. I am using ASIO, so maybe the problem DOESNT exist. My
interface is RME UFX (in Loopback Mode) and it claims that it is
running under internal sync, from which I understand Samplitude to be
the master clock. As Samplitude uses input buffering, would this not
take care of potential glitches due to the asynchronous nature of the
stream? RME doesnt do any D/A until I listen to it, and no errors
were reported by the software.
But I am guessing...
David
>--On 19 March 2014 18:47 +0100 David Pickett <d...@fugato.com> wrote:
>
>> A bit scary that, as Paul said, Microsoft employ SRC automatically if
>> you get it wrong...
>
>Actually, after thinking about this, I suspect it's unavoidable in this
>situation, even if the data rates are "matched".
>
>Where's the master clock? My interface (E-MU 1616m) can be clocked
>from a digital input (SPDIF or ADAT), or it can be internally clocked.
>If I am playing back files, the interface provides the clock for the
>computer. But if the data is coming from the Internet, that data
>cannot but be separately clocked, but it can't provide the master clock
>for the interface - it just hasn't the stability, and buffering will
>get in the way and so on.
>
>My present method of recording goes through the interface, so it seems
>to me that resampling is unavoidable - the only way to get around that
>would be to have a method of recording the stream from the Internet
>directly without playing it out to the interface. Maybe TotalRecorder
>taps in to the audio stream before the SRC - I must look into that.
>
>Or maybe I just don't understand digital audio properly, or at least
>the Internet aspect of it.
>
>Oh, and I understand that the current Windows SRC is pretty good,
>actually.
>
>Paul
>
>--
>Paul Hodges
>
>
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