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Re: How Does CD Player Anti Skip Work?

 
 
John Tserkezis
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      05-16-2008, 11:33 PM
David Tweed wrote:

> Yes, that wording is a bit confusing. What's really happening is that
> the audio to the DAC is *always* coming from the RAM, which is being
> used as a FIFO buffer.


May be worth adding, that although a buffer however small, is always being
used, that for the CD players that have the "anti-shock" feature, have a
LARGER buffer than those without.

In addition, they *might* spend a little more on the physical shock
resistance of the tray and such, but not a lot. Since adding ram is by far
easier, smaller and cheaper than the engineering that has to go into a tray to
stop jogging skips, the extra ram wins every time.

So to the OP, it's not really a "feature" in the true sense, it's just more
of what the circuitry already has.
--
Linux Registered User # 302622
<http://counter.li.org>
 
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Engineer
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      06-29-2008, 08:15 PM
On May 16, 7:33*pm, John Tserkezis
<j...@techniciansyndrome.org.invalid> wrote:
> David Tweed wrote:
> > Yes, that wording is a bit confusing. What's really happening is that
> > the audio to the DAC is *always* coming from the RAM, which is being
> > used as a FIFO buffer.

>
> * May be worth adding, that although a buffer however small, is always being
> used, that for the CD players that have the "anti-shock" feature, have a
> LARGER buffer than those without.
>
> * In addition, they *might* spend a little more on the physical shock
> resistance of the tray and such, but not a lot. *Since adding ram is byfar
> easier, smaller and cheaper than the engineering that has to go into a tray to
> stop jogging skips, the extra ram wins every time.
>
> * So to the OP, it's not really a "feature" in the true sense, it's just more
> of what the circuitry already has.
> --
> Linux Registered User # 302622
> <http://counter.li.org>


I hope someone now edits the Wikipedia entry!
Cheers,
Roger
 
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