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Old 7th May 2008, 07:20 AM   #11
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May be you can try to read this document, it's explained in a better way

http://www.acec13.fr/tvc/Wadia/Resso...TEREOPHILE.pdf
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Old 7th May 2008, 08:16 AM   #12
4real is offline 4real  Netherlands
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Basically the output stage and DAC's are not really a special thing in these Wadia players. Shurely they are well designed, but the real secret of these players is the software (or (re)programmable FCPGA or DSP).

The interpolation algorithms are what makes a Wadia player different from others. Basically they use a 11th (or 12th) order polynomial function to generate the extra samples for oversampling.
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Old 7th May 2008, 08:23 AM   #13
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And maybe the fact that the analog filter (because of the previous stages) is very simple and not castrating.
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Old 7th May 2008, 08:24 AM   #14
4real is offline 4real  Netherlands
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Quote:
Originally posted by renaudagnes
And maybe the fact that the analog filter (because of the previous stages) is very simple and not castrating.
The filter of any modern oversampling dac is simple
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Old 7th May 2008, 08:33 AM   #15
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So you think the really true secret of these ooold Wadia is the algorithm ?
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Old 15th May 2008, 08:11 PM   #16
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Hi Renaud,

Quote:
Originally posted by renaudagnes
So you think the really true secret of these ooold Wadia is the algorithm ?
Probably. Wadia are first DAC with NOS DAC sound. Except it interpolate to 32x or 64X.

Eric
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Old 16th May 2008, 06:36 AM   #17
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Hi my friend !

What about the Wadia X32 in comparison to the Wadia 1000 ?

Did you have enough time to compare the both ?

Whaaa, let me know if the X32 is a proud true Wadia or a waste of money
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Old 16th May 2008, 10:34 PM   #18
tubenut is offline tubenut  South Africa
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Wadia X32 uses Digimaster filter software, so yes, true Wadia but lower in food chain then X64.

The one Wadia that is not, ie, no Digimaster software IIRC is the later baby DAC, Wadia 12 .
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Old 19th May 2008, 09:13 AM   #19
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Well, after the 1000, the X64.4 Digimaster, the X32... I just have to find a 2000 to be complete.


The X64.4 Digimaster is a nice DAC.

A friend of mine use a X64.4 "French Curve", does anybody know where are the difference between the "Digimaster" and the "French Curve"?

In these prehistoric DAC time the Digimaster was more expansive than the "French Curve", but I cannot find / understand why!
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Old 2nd December 2009, 01:02 AM   #20
Champ10 is offline Champ10  United States
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"French Curve" was the original name for the Digimaster software. They used that name for only a very short time.
Both are based off the exact same idea. Using Lagrangian curve fitting (thus the name "french curve") as the first part of their re-sampling process.
There was one minor difference though. The "French Curve" was a 12th order algorithm while the later Digimaster was an 11th. But functionally and audibly they are the same.

The first intent was to allow end users who were familiar with computer programming to write their own digital filters and write them to replaceable eeproms on the dsp board. They quickly abandoned that idea and named their own algorithm as "Digimaster" with the intent of licensing it to other DAC manufacturers. That also pretty much failed. The company went bankrupt for the first time, the original owners/designers moved on, and the torch was picked up by a new set of engineers who ran with the Digimaster idea keeping it fundamentally unchanged since that time.
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