Please explain OS vs. NOS to me... - diyAudio
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Old 7th December 2003, 11:55 AM   #1
Lyra is offline Lyra  Norway
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Default Please explain OS vs. NOS to me...

I am a little courious?.....
Why do you (allmost) all prefer DAC's witout oversampling, when allmost all new designs include this ??

I have not had the opportunity to listen to diffrent DAC's with and without OS and am not sure what the different in sound will be....
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Old 7th December 2003, 03:02 PM   #2
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Default Different Kinds Of Noise......

Oversampling can incorporate 'noise shaping' which means altering how quantisation errors are handled, and consequent sonic artifacts.
Pioneer, Sony and Panasonic DA convertors sound dynamically different due to differing oversampling algorithms.
Non OS dacs measure more distorted on sinewave testing but some regard this distortion as more sonically acceptable than OS dacs.
Panasonic 'MASH' oversampling drives me out of the room.

Eric.
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Old 7th December 2003, 03:09 PM   #3
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Old 7th December 2003, 03:55 PM   #4
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Default Re: Please explain OS vs. NOS to me...

Quote:
Originally posted by Lyra
I am a little courious?.....
Why do you (allmost) all prefer DAC's witout oversampling, when allmost all new designs include this ??
I don't think the majority prefers DAC's from stoneage, really.
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Old 7th December 2003, 04:08 PM   #5
Lyra is offline Lyra  Norway
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Default Re: Re: Please explain OS vs. NOS to me...

Quote:
Originally posted by peranders

I don't think the majority prefers DAC's from stoneage, really.
What I meant was: allmost DIY'ers and projects referred here......I think?!
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Old 7th December 2003, 04:51 PM   #6
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Stone age or not , you can build a non os dac and decide for yourself , it will be certainly better that accept just what the market offers .



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Old 7th December 2003, 04:57 PM   #7
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My oversampled, parallel PCM 1704K DAC is collecting dust for almost a year already, while stone age (or maybe Ice Age) chips go through the period of Renaissance.
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Old 7th December 2003, 05:01 PM   #8
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Default Re: Re: Re: Please explain OS vs. NOS to me...

Quote:
Originally posted by Lyra


What I meant was: allmost DIY'ers and projects referred here......I think?!
There is definitely bigger interest here with simple chips for a simple reason that they are just easier to implement, only few parts are needed and even PCB is not necessary and sounds very good.

One member, jwb if I'm correct, recently came up with a new design for his oversampled DAC. He claims that this will be definitely his last word on the subject, but considering that this is another and seemingly supposedly improved design, one might conclude that he wasn't completely happy with a previous one.
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Old 7th December 2003, 05:31 PM   #9
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Default Re: Please explain OS vs. NOS to me...

Konnichiwa,

Quote:
Originally posted by Lyra
Why do you (allmost) all prefer DAC's witout oversampling, when allmost all new designs include this ??
Short and sweet, No Over Sampling sounds more naturals, musical and realsitic.

Sayonara
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Old 7th December 2003, 05:35 PM   #10
Bricolo is offline Bricolo  France
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Is there a commercial non-os dac, except sakurasystem's one?
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