Subject: Re: [linux-audio-dev] So, what to do about it? (was: Still I cannot understand why...)
From: martijn sipkema (msipkema_AT_sipkema-digital.com)
Date: Tue Dec 18 2001 - 12:09:30 EET
> >i'm sorry, but i don't understand. the rate at which data comes in
> >from the s/pdif interface is fixed. the if cd recording device is not
> >able to adjust its 'pitch', i.e. record at a rate slightly higher/lower
> >than its nominal recording rate, it will eventually xrun, if that is
> >the correct term for it, right?
>
> the rate at which data arrives over s/pdif *is* the exact sample rate
> that the CD is burning at (well, unless you're insane). there is no
> need for throttling, pitch control or anything like that. you just
> buffer the data on startup to protect against latency glitches,
> convert the samples to 16bit, big-endian (the red book standard), and
> feed it to the CD recorder. end of story (other than the little
> details).
is that rate really exactly the same? can not the clock in the device
producing the s/pdif signal have a slightly different notion of time
than the one in the cd recorder?
--martijn
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