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In Reply to: RE: About depth of field with digital posted by beppe61 on May 07, 2015 at 05:31:20
I use the Musical Surroundings MYDAC and get extremely great three dimensional soundstaging. Far better than most other DACs. The MYDAC does use a proprietary digital circuitry, however, patents being applied for
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Hi and thanks a lot for the very interesting suggestion
I read the review on TAS ... a very interesting unit indeed.
I am not an expert but i guess that inside a dac some kind of processing goes on and that is the point.
Some dacs perform this processing in a way that is less detrimental for sound.
For instance digital filterless dacs are said to sound much more musical.
I think that digital filters can make or break the sound.
Like i think that delta-sigma dac chip can be perfectly fine, like the unit you mention clearly shows.
I read also another thing but i am not sure i have understood rightly.
Upsampling redbook to dsd should allow for the use of analog filters, much less detrimental for the sound.
What i find really strange is that digital filters are not so popular in the discussions on digital sources.
Much less than dac chip, power supplies, output stages.
When i see what normal digital filters do to the signal i am surprised.
Things like the pre-ringing ... a signal popping up before the actual signal ??? is that a "sonic premonition" ?
how could that be acceptable ? how could people live with that ?
Thanks a lot again.
Kind regards,
bg
Edits: 05/07/15
digital needs more bits in order to extract more data. The MYDAC boosts the softer passages in the mid and highs which are responsible for the ambient information, processes it, which naturally produces an unnaturally bright sound. This boost is then dropped in the analog stage, thus preserving a great amount of ambient detail.
or so it was explained to me.... I hear the difference.
Hi and i am really sorry for the late reply.
Very interesting unit the Mydac ... i have a great respect for Micromega brand.
So the soundstage would depend on high freq response and with some kind of DSP is possible to enhance the effect ?
I do not understand when you say " digital needs more bits in order to extract more data "
Do you mean that a very good soundstage is possible with higher rez format than cd ?
I was reading lately about dacs with multibit chips
They seem to have a much more evident soundstage. Like the difference between a painting (sigma-delta) and a bas-relief (multibit).
If this is true i will go hunting for some multibit dac because i like solid soundstage.
With the right recordings of course.
Thanks a lot again.
Kind regards,
bg
"Boosting the highs then rolling them off at the end."
Back in my day we called that: Preemphasis.
And as I'm sure you know, it's included as part of the Red-Book standard. However unlike records and tape and FM it's use is unfortunately optional as is the implementation of the de-emphasis filter (I think). I've often wondered if it had been manditory and the the de-emphasis filter forced to be in the analog domain at the get-go if most of the whinging about digital would never have happened.
The signals that make music seem live are subtle in both the time and amplitude domains and can easily get lost in the shuffle. On top of that boosting the HF's would have provided more jitter for the lower frequencies helping the effective resolution of the early converters.
A bad (or misused) standard can cause decades of grief. One that was the source of much frustration was RS-232. Of course it didn't help that it was only aimed at modems but ended up being used for about everything.
My DAC, an ancient EAD, does sense the preemphasis bit and switches in (with a comforting relay click) real hardware deemphasis after the converter. Seems like your's is also creating the emphasis. Yes, it leaves out more of the chain but the grief always comes at the conversions so at least the final one should be improved.
Regards, Rick
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