Finding actual plots of the effect of clock jitter on effective DAC SNR
etc is somewhat problematic however the attached plot from
http://www.electronicproducts.com/ShowPage.asp?Filename=tech-update.jul2007.html
illustrates the clock jitter sensitivity of some sigma delta DAC designs.
There's a
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Poul-Henning Kamp wrote:
I have paid my dues in the HiFi world, but I have always insisted that
there be a solid scientific basis for any product I bought.
When faced with claims that picosecond jitter can be perceived by
]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, October 09, 2007 9:54 AM
Subject: Re: [time-nuts] from Sputnik to CD
Poul-Henning Kamp wrote:
I have paid my dues in the HiFi world, but I have always insisted that
there be a solid scientific basis for any
-
From: Dr. David Kirkby [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, October 09, 2007 9:54 AM
Subject: Re: [time-nuts] from Sputnik to CD
Poul-Henning Kamp wrote:
I have paid my dues in the HiFi world, but I have always
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J.D. Bakker wrote:
Finding actual plots of the effect of clock jitter on effective DAC SNR
etc is somewhat problematic however the attached plot from
As one who has worked in the pro digital audio field for years, I can
tell you that sub-100 ps jitter very definitely can be heard,
depending on its spectrum. Modern sigma-delta ADCs and DACs use
oversampling clocks of 12 to 50 MHz for sample rates of 44.1 kHz to
192 kHz at 24-bit resolution
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On Oct 8, 2007, at 20:04, David McGaw wrote:
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As one who has worked in the pro digital audio field for years, I can
tell you that sub-100 ps jitter
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As one who has worked in the pro digital audio field for years, I can
tell you that sub-100 ps jitter very definitely can be heard,
depending on its spectrum. Modern sigma-delta ADCs and DACs use
oversampling clocks of
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In message [EMAIL PROTECTED], Tom Van Baak writes:
It's also interesting when two list members disagree by so
many tens of dB, so I'm hoping David and PHK can settle
this for us.
I doubt it, at the end of the day, much of
Tom Van Baak wrote:
As one who has worked in the pro digital audio field for years, I can
tell you that sub-100 ps jitter very definitely can be heard,
depending on its spectrum. Modern sigma-delta ADCs and DACs use
oversampling clocks of 12 to 50 MHz for sample rates of 44.1 kHz to
192
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From: Poul-Henning Kamp [EMAIL PROTECTED]
Subject: Re: [time-nuts] from Sputnik to CD
Date: Mon, 08 Oct 2007 21:02:24 +
Message-ID: [EMAIL PROTECTED]
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reply.
Bill Hawkins
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Bruce Griffiths
Sent: Monday, October 08, 2007 4:10 PM
To: Tom Van Baak; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] from Sputnik to CD
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Bill Hawkins wrote:
Bruce,
You have been more precise than this in other posts. Can you put
some numbers behind the sigma delta DAC's sensitivity to jitter?
Twenty years ago, the process control community got all jittery
about the jitter in the execution period of function blocks. The
On Oct 6, 2007, at 3:01, Magnus Danielson wrote:
If the sample rate is 44.1 kHz then the adev below 1 s, even
down to 10 us, or jitter, or the phase noise above 1 kHz are
they key parameters; not long-term drift. In this case I'd take
a nice 10811A over a typical Rb any day. Does anyone
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You are not off base. I know the inventor of the high definition CD standard and
he has the patents on the mastering system. He had made for his company a
special piece of test equipment to measure picosecond jitter. I
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I have paid my dues in the HiFi world, but I have always insisted that
there be a solid scientific basis for any product I bought.
When faced with claims that picosecond jitter can be perceived by
the human ear, my
On Oct 6, 2007, at 18:48, Poul-Henning Kamp wrote:
When faced with claims that picosecond jitter can be perceived by
the human ear, my flim-flam-o-meter blows a fuse.
A 1 nsec phasemodulation of a 44100 kHz clock signal will, worst
case, come out to an noise component 87 dB below the
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You are way incorrect in your reply. Since this is off-topic I will limit my
reply to a few salient points.
High definition CD is not at 44.1KHz It is much higher so your ratio is off.
The A/D and D/A converters they use are
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If the sample rate is 44.1 kHz then the adev below 1 s, even
down to 10 us, or jitter, or the phase noise above 1 kHz are
they key parameters; not long-term drift. In this case I'd take
a nice 10811A over a typical Rb any
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OK, not really a time related post...except for the clock in the CD
player...which begs the question, any time nuts play with creating a
more precise CD player using a precision oscillator? Think it would
make a
From: Tom Van Baak [EMAIL PROTECTED]
Subject: Re: [time-nuts] from Sputnik to CD
Date: Fri, 5 Oct 2007 17:46:46 -0700
Message-ID: [EMAIL PROTECTED]
Tom,
(or is that Tom-Tom?)
OK, not really a time related post...except for the clock in the CD
player...which begs the question, any time nuts
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