There is a 20bit ladder Analog Devices AD5791
Transporter (modded) -> RG142 -> Avantgarde Acoustic based 500VA
monoblocks -> Sommer SPK240 -> self-made speakers
Wombat's Profile:
Julf wrote:
> Would the fans of such devices care about any measurements anyway?
Probably not :) I can't imagine taking the ladder DAC concept to 24bit
it , but that actually exists ?
The delta sigma ,one bit DAC and similar designs is just such an elegant
way of solving the linearity problem
Mnyb wrote:
> Unfortunately the measurment migth stilll be needed ? Are there not new
> r2r ladder dacs popular in some camps of "fantasy audio" or "novelty
> electronics" :)
Would the fans of such devices care about any measurements anyway?
"To try to judge the real from the false will
Mnyb wrote:
> Unfortunately the measurment migth stilll be needed ? Are there not new
> r2r ladder dacs popular in some camps of "fantasy audio" or "novelty
> electronics" :)
These are typically made out of NOS chips that should have been tested
20-30 years ago when they were the best we had.
Unfortunately the measurment migth stilll be needed ? Are there not new
r2r ladder dacs popular in some camps of "fantasy audio" or "novelty
electronics" :)
Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH
arnyk wrote:
> Oversampling does not address the problem of DAC amplitude linearity.
> The first generation Philips players were oversampled, but used R-2R
> ladder DACs that were therefore highly dependent of parts quality for
> amplitude linearity.
True. Fortunately most of us have moved on
Julf wrote:
>
> He is basically verifying that it is a completely artificial test signal
> designed to illustrate the symmetry of the DAC (and it is only relevant
> on old-fashioned non-oversampling DACs anyway)
>
> > John_Atkinson_post_34 wrote:
> >
> > With the vast number of DACs now
darrenyeats wrote:
> I mentally glossed over it being a 1kHz cycle. So there are 44 samples
> on each level of figure 9. The correct over-sampling behaviour is indeed
> to sustain three plateaus, with Gibbs ringing in between. (If each level
> were one sample, as I had in my mind, then a smooth
darrenyeats wrote:
> It's actually figure 9 I'm questioning. Fig.9 is an example of the
> measurement made on every digital source reviewed by Stereophile. The
> result varies in each test, and is a measurement at the analogue output.
> Have a look at almost any review there e.g.
>
Thanks arnyk. I agree with what you say, I think.
Nevertheless, I am curious as to how this 3-level waveform ever makes it
out of a 24 bit, upsampling DAC - unless, as I infer, the "16 data" is
actually nothing of the sort, but instead a 16-bit-like staircase
rendered in a higher-rate, higher
darrenyeats wrote:
> It's actually figure 9 I'm questioning. Fig.9 is an example of the
> measurement made on every digital source reviewed by Stereophile. The
> result varies in each test, and is a measurement at the analogue output.
> Have a look at almost any review there e.g.
>
It's actually figure 9 I'm questioning. Fig.9 is actually the
measurement made on every digital source reviewed by Stereophile. The
result varies in each test, and is a measurement of the analogue
output.
Note this was discussed a while ago here:
darrenyeats wrote:
> I have a question about this.
> http://www.stereophile.com/content/quality-lies-details-page-6#DQEqFEA63RHRhQcK.97
>
> I thought such a waveform would be impossible with 16 bit data when fed
> into an upsampling, 24 bit DAC. I thought the samples would be
> interpolated at
I have a question about this.
http://www.stereophile.com/content/quality-lies-details-page-6#DQEqFEA63RHRhQcK.97
I thought such a waveform would be impossible with 16 bit data when fed
into an upsampling, 24 bit DAC. I thought the samples would be
interpolated at higher rate and greater bit
:) and all equipment survived
Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x
MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3
sub.
Bedroom/Office: Boom
Kitchen: Touch + powered
Yeah I know. Feel pretty stupid - but we did have a new baby last week
so may be sleep deprivation related.. :)
Touch x 2, Booms x 2, SqueezeCommander on Galaxy S3 (Duet Receiver
+ Controllers x 2 - semi-retired)
You use splitters to make it possible to connect one output to several
inputs !
Not connect several outputs to one input , this is not a good idea .
Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x
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