[time-nuts] Clocks for Audio gear

[J. Forster]

In fact, I do believe the paper is a voice of rationality in an ocean oh
hype. Very expensive hype, promoted by shameless hucksters.

-John

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> On Thu, May 10, 2012 at 12:57 AM, MailLists <lists at medesign.ro> wrote:
>> Hearing tests showed the ability to discern jitter above a few hundred
>> nanoseconds rms.
>> http://amorgignitamorem.nl/Audio/Jitter/Detection%20threshold%20for%20distortions%20due%20to%20jitter%20on%20digital%20audio%2026_50.pdf
>>
>> Others claim the ability to detect jitter in the picoseconds range...
>
> If we are to believe the above paper,then those guys who claim to hear
> pS jitter are wrong.  Likely they can also here is a fuse is is place
> in the holder "backwards".
>
> So by the above, no now can hear 250 nS of jitter.    I really doubt
> any decent system other then the most low-cost consumer level junk has
> jitter at the 250 nS level.   Even a TTL "can oscillator" is better
> than that.
>
> A TTL can that is marked "4.096 MHz" costs about $2 and will make a
> square wave with a period of very close to 250 nS.   Then they divide
> this down to the sample rate of 96KHz.   In order to see a 250 nS
> jitter in the 96K signal the TTL can would have to "skip a beat".
> 250 nS is is a huge error and you don't get there with digital noise
>
> Chris Albertson
> Redondo Beach, California
>
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