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New FIFO buffer for RPI/SBCs
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Old 11th December 2018, 12:59 PM   #2871
soundcheck is offline soundcheck  Germany
diyAudio Member
 
Join Date: Mar 2005
Location: DUS
Quote:
Originally Posted by pistollero View Post
I don't use smps on my rpi neither on my dacs.. but i would like to see the prof the differences.
If there is a difference that my ears are telling me.. why someone cannot prove that difference on measurements?
As I said, measurements are an art of it's own. Drawing the right conclusions
is another "art".
Focus. Those who have the right skills and equipment are usually not interested in getting to the bottom of the subject.
They are driven by business demands. What they know and what they communicate are usually two different subjects. Don't forget that!

Allo could present their excellent jitter measurements and say - we're done!
Allo knows that won't do! They and many other companies know that there
are limitations to the measurements. I'm not saying there's no need for measurements.
It's rather like - from the point your measurements look perfect, the real part of "audiophile" product design starts!


If somebody tells you that a SMPS is noisy. I'd say - so what !?!?
If somebody tells you a Linear PS is better then a SPMS. I'd say - so what !?!?
I'd say. It all depends. Just try it.
I have several linears here settling dust. I still think my SMPS solution is better then my linears in my environment.
I do know that everybody has a unique solution and not to forget different expectations.

Different environments are generating different results. Trying to find
out "Why exactly it is like it is??" can get pretty exhausting.

So. Bottom line.
For sure it's much easier to follow that "blog" logic: "If you don't measure any differences - there are no differences . Period."
But this - for sure - is not the attitude why most of us running that hobby!


Enjoy your music.

Last edited by soundcheck; 11th December 2018 at 01:12 PM.
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Old 11th December 2018, 01:16 PM   #2872
pistollero is offline pistollero  Portugal
diyAudio Member
 
Join Date: Apr 2016
Location: portugal
Quote:
Originally Posted by soundcheck View Post
As I said, measurements are an art of it's own. Drawing the right conclusions
is another "art".
Focus. Those who have the right skills and equipment are usually not interested in getting to the bottom of the subject.
They are driven by business demands. What they know and what they communicate are usually two different subjects. Don't forget that!

Allo could present their excellent jitter measurements and say - we're done!
Allo knows that won't do! They and many other companies know that there
are limitations to the measurements. I'm not saying there's no need for measurements.
It's rather like - from the point your measurements look perfect, the real part of "audiophile" product design starts!


If somebody tells you that a SMPS is noisy. I'd say - so what !?!?
If somebody tells you a Linear PS is better then a SPMS. I'd say - so what !?!?
I'd say. It all depends. Just try it.
I have several linears here settling dust. I still think my SMPS solution is better then my linears in my environment.
I do know that everybody has a unique solution and not to forget different expectations.

Different environments are generating different results. Trying to find
out "Why exactly it is like it is??" can get pretty exhausting.

So. Bottom line.
For sure it's much easier to follow that "blog" logic: "If you don't measure any differences - there are no differences . Period."


Enjoy your music.
Ok but there must be some true in is measurements... i think...
his measurements of dac specs are inline with the manufacturer claims..
If they are wrong .. they are all wrong...
Lol
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Old 11th December 2018, 02:10 PM   #2873
Dimdim is offline Dimdim  Greece
diyAudio Member
 
Join Date: Sep 2008
Location: Athens
New FIFO buffer for RPI/SBCs
The usual measurements are not bad, but they do not tell the entire tale.

A product that measures well is guaranteed to function properly. It is not guaranteed to make excellent sound.

There exists a bunch of other stuff that does not get measured and that is what really characterizes a product as good, better or best-in-class.

For example, who truly measures power supplies, especially the ones inside consumer devices? I'm talking about output impedance, bandwidth, noise, etc.

Most of the "mainstream" audio measurements will tell you that an LM7805-based power supply "sounds" the same as an LT3042-based power supply.

Is there anybody out there in diyaudioland that still believes that switching between power supplies does not make audible differences in audio?
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Old 11th December 2018, 02:58 PM   #2874
Markw4 is offline Markw4  United States
diyAudio Member
 
Join Date: Jul 2016
Location: California
Quote:
Originally Posted by Dimdim View Post
The usual measurements are not bad, but they do not tell the entire tale.
+1
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