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Sound Card's SNR?
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Joined: Aug 2009
Posts: 18
frequent flier
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OP
frequent flier
Joined: Aug 2009
Posts: 18 |
I have my computer hooked up to my home audio system which is a Deenon 3808 and a pair of Axiom M3's.
I have a HT OMEGA Striker sound card in the computer. I'm using the SPDIF output from the sound card to the Denon. The sound card SNR is only 100db. Would my sound be better with a sound card that has a SNR of 124db?
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Re: Sound Card's SNR?
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
There's no SNR with a digital connection. You could use the onboard S/PDIF output (if it has one), and you'll get exactly the same audio.
And it isn't only 100 dB SNR, that's far in excess of what you could ever hear in a normal listening room, where the noise floor of the environment is greater than 30 dB.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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Re: Sound Card's SNR?
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Joined: Aug 2009
Posts: 18
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Re: Sound Card's SNR?
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Joined: Jan 2002
Posts: 3,270
connoisseur
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connoisseur
Joined: Jan 2002
Posts: 3,270 |
Damien,
No. A signal-to-noise ratio of "only" 100 dB is spectacularly good compared to the typical SNR found in analog gear-- about 60 dB for the best vinyl (most vinyl is much worse), a bit more for analog tape. There would be no audible advantage to moving from your current sound card to one with a greater than 100 dB S/N ratio.
Keep in mind that a noise floor that's -80 dB is totally inaudible with musical programming of any sort. Empirical tests that introduce distortion at increasing levels with the music have shown that the distortion is often not detected by trained listeners until the background distortion levels are increased to -40 dB to -30dB below the music signals.
Regards, Alan
Alan Lofft, Axiom Resident Expert (Retired)
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Re: Sound Card's SNR?
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Yes, in complete agreement with the points made by Alan and Chris. To put more numbers on it, the -30dB distortion mentioned by Alan is about 3% and -40dB is about 1%. Audibility varies with the type of music involved, but concerns sometimes seen in arguments elsewhere about distortion measurements differing by tenths or even hundredths of a percent aren't based on realities.
-----------------------------------
Enjoy the music, not the equipment.
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