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SOtM SMS-200
#11
(24-Dec-2016, 12:56)NickB Wrote: I actually made exactly this point about noise on the mains on another forum and actually stated that I could turn mine up to +30 dB and hear silence. Apparently the nasty insidious mains born noise doesn't actually appear until you play some music.... quite how it knows to start then I am unsure, possibly quantum entanglement or something simple like that

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Perhaps they thought you were joking, I've seen you write this before and actually thought the same then.

'Noise' of course is used as a 'catchall concept'. Both in the analog and digital world we have noise and distortion. Of course digital signals are in its basis also analog in nature but there we're not talking about a real time analog music signal but a digital, encoded representation of it.

Noise is more random whereas distortion is directly correlated to the music signal. Noise in the analog world could be heard as hiss/static/'white noise' or whatever when you turn up an analog amplifier to maximum. When no musical signal is amplified you'll hear the self noise of the amplifier and anything that bled in from outside through its connections. Doing this with you Devialet is not the same. All analog signals are converted to digital and DSP'ed at entrance. Digital signals are DSP'ed but they too remain digital until the ADH stage in the Devialet. Turning up the volume on your D without any signal present would let you hear only the amplifed noise of the ADH stage.

'Noise' as the catchall concept in the digital world causes all sorts of other types of issues like jitter and bit errors. Transferring a digital signal in a bit perfect way in the digital domain isn't that hard anymore. It's crossing the border from the digital and analog domain, in the DAC, where things become quite a more difficult. A digital signal seen in an analog way is a high bandwidth/frequency signal. With this digital signal comes a lot of 'noise' as well, both superimposed and offset. This signal also contains jitter. It's the de-jittering and keeping all these types of noise out/not infuencing the VERY delicate (16 bit is 65535 levels of voltage between 0-2V typically) D to A conversion that's difficult. Recent theories also say the quality of the digital signal itself (signal integrity) also influence the circuits in the receiver (the D in our case). A lower integrity digital signal causes a USB receiver for example to 'work harder' and thus cause more noise in it's surrounding circuits through ground and power. Isolating these different domains or doing ones best to get the highest signal integrity if that's not possible mitigates this issue.

All this is terribly complex and the above is in no way complete and just a quick 'overview'. Writing this in English isn't the easiest for me when I'd like to give analogies to explain certain concepts better so I've kept it short. But there's a lot more information 'out there' on the Internet.
PS Audio P3, Shunyata ΞTRON Alpha Digital and HC/Furutech power cables, Paul Hynes SR7EHD-MR4, DIY Roon Server & Roon Endpoint running AudioLinux Headless, Phasure Lush^2 USB cable, Audioquest Diamond RJ/E ethernet, Uptone Audio etherREGEN, Mutec MC-3+ USB, Shunyata ΞTRON Anaconda Digital XLR AES/EBU, Devialet Expert 250 Pro CI, Nordost Tyr Reference LS cables, Von Schweikert VR-5 SE Anniversary Edition, Anti-Mode Dual Core 2.0, JL Audio Fathom F112. More detail here.

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Messages In This Thread
SOtM SMS-200 - by Confused - 09-Dec-2016, 16:35
RE: SOtM SMS-200 - by Antoine - 09-Dec-2016, 17:02
SOtM SMS-200 - by samsoum - 14-Dec-2016, 11:58
RE: SOtM SMS-200 - by Antoine - 14-Dec-2016, 13:06
RE: SOtM SMS-200 - by jjmouse - 19-Dec-2016, 09:10
RE: SOtM SMS-200 - by Antoine - 19-Dec-2016, 11:47
RE: SOtM SMS-200 - by Carcrashboy - 23-Dec-2016, 16:39
RE: SOtM SMS-200 - by Hifi_swlon - 23-Dec-2016, 21:50
RE: SOtM SMS-200 - by Confused - 24-Dec-2016, 12:43
SOtM SMS-200 - by NickB - 24-Dec-2016, 12:56
RE: SOtM SMS-200 - by f1eng - 25-Mar-2017, 16:10
RE: SOtM SMS-200 - by Antoine - 24-Dec-2016, 14:26
RE: SOtM SMS-200 - by Soniclife - 24-Dec-2016, 14:38
RE: SOtM SMS-200 - by Antoine - 24-Dec-2016, 14:46
RE: SOtM SMS-200 - by Antoine - 24-Dec-2016, 14:53
SOtM SMS-200 - by petersv - 22-Jan-2017, 04:43
RE: SOtM SMS-200 - by zdenes - 21-Feb-2017, 16:08
RE: SOtM SMS-200 - by octaviars - 21-Feb-2017, 16:13
RE: SOtM SMS-200 - by zdenes - 21-Feb-2017, 16:58
RE: SOtM SMS-200 - by Confused - 21-Feb-2017, 18:24
RE: SOtM SMS-200 - by octaviars - 21-Feb-2017, 18:37
RE: SOtM SMS-200 - by sam1000 - 22-Feb-2017, 19:10
RE: SOtM SMS-200 - by Antoine - 22-Feb-2017, 19:55
RE: SOtM SMS-200 - by sam1000 - 22-Feb-2017, 20:30
RE: SOtM SMS-200 - by Confused - 22-Feb-2017, 21:38
RE: SOtM SMS-200 - by mdconnelly - 22-Feb-2017, 21:57
RE: SOtM SMS-200 - by Confused - 25-Feb-2017, 10:05
RE: SOtM SMS-200 - by mdconnelly - 25-Feb-2017, 17:32
RE: SOtM SMS-200 - by sam1000 - 22-Feb-2017, 21:57
RE: SOtM SMS-200 - by mdconnelly - 22-Feb-2017, 22:04
RE: SOtM SMS-200 - by petersv - 24-Feb-2017, 18:41
RE: SOtM SMS-200 - by mdconnelly - 24-Feb-2017, 19:27
RE: SOtM SMS-200 - by octaviars - 28-Feb-2017, 22:00
RE: SOtM SMS-200 - by Antoine - 01-Mar-2017, 19:03
RE: SOtM SMS-200 - by octaviars - 01-Mar-2017, 20:02
RE: SOtM SMS-200 - by Antoine - 01-Mar-2017, 20:21
RE: SOtM SMS-200 - by mirekti - 02-Mar-2017, 18:33
RE: SOtM SMS-200 - by octaviars - 04-Mar-2017, 10:14
RE: SOtM SMS-200 - by SwissBear - 07-Mar-2017, 08:36
RE: SOtM SMS-200 - by sam1000 - 17-Mar-2017, 23:09
RE: SOtM SMS-200 - by Hifi_swlon - 18-Mar-2017, 11:33
RE: SOtM SMS-200 - by Antoine - 25-Mar-2017, 12:07
RE: SOtM SMS-200 - by Hifi_swlon - 25-Mar-2017, 17:00
RE: SOtM SMS-200 - by Antoine - 25-Mar-2017, 23:13
RE: SOtM SMS-200 - by Hifi_swlon - 25-Mar-2017, 23:50
RE: SOtM SMS-200 - by Antoine - 26-Mar-2017, 00:03
RE: SOtM SMS-200 - by f1eng - 27-Mar-2017, 13:10
RE: SOtM SMS-200 - by Rama - 26-Mar-2017, 22:05
RE: SOtM SMS-200 - by Antoine - 27-Mar-2017, 12:12
RE: SOtM SMS-200 - by Rama - 27-Mar-2017, 22:06
RE: SOtM SMS-200 - by Rama - 28-Mar-2017, 00:02
RE: SOtM SMS-200 - by SwissBear - 28-Mar-2017, 11:41
RE: SOtM SMS-200 - by Antoine - 28-Mar-2017, 16:11
RE: SOtM SMS-200 - by Rama - 28-Mar-2017, 20:43
RE: SOtM SMS-200 - by K4680 - 28-Mar-2017, 19:20
RE: SOtM SMS-200 - by Rama - 28-Mar-2017, 20:22
RE: SOtM SMS-200 - by K4680 - 29-Mar-2017, 09:20
RE: SOtM SMS-200 - by Kwan - 29-Mar-2017, 04:33
RE: SOtM SMS-200 - by Antoine - 29-Mar-2017, 17:00
RE: SOtM SMS-200 - by Dr Tone - 29-Mar-2017, 17:10
RE: SOtM SMS-200 - by Rama - 29-Mar-2017, 18:18
RE: SOtM SMS-200 - by Rama - 01-Apr-2017, 01:05
RE: SOtM SMS-200 - by Antoine - 29-Mar-2017, 18:27
RE: SOtM SMS-200 - by Rama - 29-Mar-2017, 19:59
RE: SOtM SMS-200 - by Dr Tone - 30-Mar-2017, 16:15
RE: SOtM SMS-200 - by octaviars - 30-Mar-2017, 17:06
RE: SOtM SMS-200 - by Dr Tone - 06-Apr-2017, 21:57
RE: SOtM SMS-200 - by SwissBear - 07-Apr-2017, 07:11
RE: SOtM SMS-200 - by Kwan - 16-Apr-2017, 16:48
RE: SOtM SMS-200 - by Confused - 05-May-2017, 16:28
RE: SOtM SMS-200 - by sam1000 - 05-May-2017, 21:14
RE: SOtM SMS-200 - by Confused - 06-May-2017, 09:12
RE: SOtM SMS-200 - by jfp - 05-May-2017, 17:11
RE: SOtM SMS-200 - by Axel - 06-May-2017, 16:58
RE: SOtM SMS-200 - by Antoine - 06-May-2017, 17:32
RE: SOtM SMS-200 - by Confused - 07-May-2017, 09:59
RE: SOtM SMS-200 - by sam1000 - 08-May-2017, 02:38
RE: SOtM SMS-200 - by Antoine - 08-May-2017, 14:29
RE: SOtM SMS-200 - by Kwan - 10-May-2017, 00:24
RE: SOtM SMS-200 - by mdconnelly - 10-May-2017, 03:22
RE: SOtM SMS-200 - by Kwan - 14-May-2017, 11:56
RE: SOtM SMS-200 - by jfp - 12-May-2017, 07:29
RE: SOtM SMS-200 - by Kwan - 14-May-2017, 11:42
RE: SOtM SMS-200 - by marcor - 01-Jun-2017, 03:26
RE: SOtM SMS-200 - by octaviars - 01-Jun-2017, 05:31
RE: SOtM SMS-200 - by marcor - 01-Jun-2017, 07:19
RE: SOtM SMS-200 - by Antoine - 04-Jun-2017, 13:31
RE: SOtM SMS-200 - by Nightmare - 06-Jun-2017, 14:56
RE: SOtM SMS-200 - by Emerald - 06-Jun-2017, 17:15
RE: SOtM SMS-200 - by Nightmare - 07-Jun-2017, 09:46
RE: SOtM SMS-200 - by Kwan - 21-Jun-2017, 03:37
RE: SOtM SMS-200 - by zdenes - 22-Jun-2017, 22:38
RE: SOtM SMS-200 - by Kwan - 24-Jun-2017, 16:00
RE: SOtM SMS-200 - by zdenes - 25-Jun-2017, 20:45
RE: SOtM SMS-200 - by Hifi_swlon - 25-Jun-2017, 21:06
RE: SOtM SMS-200 - by Kwan - 27-Jun-2017, 10:08
RE: SOtM SMS-200 - by zdenes - 27-Jun-2017, 16:59
RE: SOtM SMS-200 - by Confused - 27-Jun-2017, 17:40
RE: SOtM SMS-200 - by Confused - 28-Jun-2017, 12:34
RE: SOtM SMS-200 - by Kwan - 07-Jul-2017, 03:46
RE: SOtM SMS-200 - by zdenes - 28-Jun-2017, 12:59
RE: SOtM SMS-200 - by Confused - 29-Sep-2017, 20:00
SOtM SMS-200 - by samsoum - 30-Sep-2017, 16:11
RE: SOtM SMS-200 - by audio_engr - 02-Nov-2017, 16:29
RE: SOtM SMS-200 - by Confused - 04-Nov-2017, 12:27
RE: SOtM SMS-200 - by audio_engr - 05-Nov-2017, 02:55
RE: SOtM SMS-200 - by thumb5 - 04-Nov-2017, 15:05
RE: SOtM SMS-200 - by audio_engr - 05-Nov-2017, 02:57
RE: SOtM SMS-200 - by sam1000 - 04-Nov-2017, 20:58
RE: SOtM SMS-200 - by Confused - 21-Dec-2017, 20:22
RE: SOtM SMS-200 - by Rama - 21-Dec-2017, 21:21
RE: SOtM SMS-200 - by zdenes - 22-Dec-2017, 11:14
RE: SOtM SMS-200 - by Rama - 22-Dec-2017, 12:31
RE: SOtM SMS-200 - by Confused - 22-Dec-2017, 13:16
RE: SOtM SMS-200 - by Rama - 22-Dec-2017, 14:21
RE: SOtM SMS-200 - by Dan - 22-Dec-2017, 14:40
RE: SOtM SMS-200 - by Confused - 22-Dec-2017, 15:21
RE: SOtM SMS-200 - by Rama - 22-Dec-2017, 14:49
RE: SOtM SMS-200 - by Dan - 22-Dec-2017, 15:33
RE: SOtM SMS-200 - by Confused - 22-Dec-2017, 15:46
RE: SOtM SMS-200 - by Dan - 22-Dec-2017, 16:11
RE: SOtM SMS-200 - by Rama - 22-Dec-2017, 16:48
RE: SOtM SMS-200 - by Dan - 22-Dec-2017, 17:53
RE: SOtM SMS-200 - by Rama - 22-Dec-2017, 18:28
RE: SOtM SMS-200 - by Confused - 14-Mar-2018, 13:38
RE: SOtM SMS-200 - by Confused - 05-Jul-2018, 17:33
RE: SOtM SMS-200 - by octaviars - 07-Jul-2018, 11:56
RE: SOtM SMS-200 - by Hifi_swlon - 07-Jul-2018, 12:00
RE: SOtM SMS-200 - by thumb5 - 07-Jul-2018, 13:44
RE: SOtM SMS-200 - by Confused - 07-Jul-2018, 12:10
RE: SOtM SMS-200 - by octaviars - 07-Jul-2018, 12:18
RE: SOtM SMS-200 - by Confused - 19-Dec-2018, 22:14
RE: SOtM SMS-200 - by Confused - 20-Dec-2018, 14:46
RE: SOtM SMS-200 - by octaviars - 20-Dec-2018, 19:38
RE: SOtM SMS-200 - by Confused - 21-Dec-2018, 14:11
RE: SOtM SMS-200 - by thumb5 - 21-Dec-2018, 14:45
RE: SOtM SMS-200 - by octaviars - 21-Dec-2018, 17:06
RE: SOtM SMS-200 - by octaviars - 21-Dec-2018, 17:07
RE: SOtM SMS-200 - by octaviars - 21-Dec-2018, 17:10
RE: SOtM SMS-200 - by Confused - 22-Dec-2018, 13:52
RE: SOtM SMS-200 - by octaviars - 26-Dec-2018, 16:05
RE: SOtM SMS-200 - by hifimanrookie - 31-Dec-2018, 17:14
RE: SOtM SMS-200 - by Chris Marshall - 31-Dec-2018, 21:44
RE: SOtM SMS-200 - by octaviars - 01-Jan-2019, 12:30
RE: SOtM SMS-200 - by hifimanrookie - 02-Jan-2019, 03:57
RE: SOtM SMS-200 - by octaviars - 02-Jan-2019, 07:02
RE: SOtM SMS-200 - by hifimanrookie - 03-Jan-2019, 01:01
RE: SOtM SMS-200 - by octaviars - 03-Jan-2019, 07:13
RE: SOtM SMS-200 - by hifimanrookie - 03-Jan-2019, 18:34
RE: SOtM SMS-200 - by octaviars - 04-Jan-2019, 08:47
RE: SOtM SMS-200 - by hifimanrookie - 04-Jan-2019, 22:50
RE: SOtM SMS-200 - by octaviars - 04-Jan-2019, 23:06
RE: SOtM SMS-200 - by octaviars - 05-Jan-2019, 15:49
RE: SOtM SMS-200 - by hifimanrookie - 06-Jan-2019, 01:04
RE: SOtM SMS-200 - by Confused - 06-Jan-2019, 13:49
RE: SOtM SMS-200 - by octaviars - 06-Jan-2019, 17:17
RE: SOtM SMS-200 - by hifimanrookie - 06-Jan-2019, 18:49
RE: SOtM SMS-200 - by octaviars - 06-Jan-2019, 19:35
RE: SOtM SMS-200 - by hifimanrookie - 06-Jan-2019, 21:41
RE: SOtM SMS-200 - by octaviars - 07-Jan-2019, 07:04
RE: SOtM SMS-200 - by hifimanrookie - 07-Jan-2019, 12:34
RE: SOtM SMS-200 - by octaviars - 07-Jan-2019, 13:32
RE: SOtM SMS-200 - by hifimanrookie - 11-Jan-2019, 01:35
RE: SOtM SMS-200 - by 5-pot-fan - 12-Jan-2019, 09:46
RE: SOtM SMS-200 - by 5-pot-fan - 12-Jan-2019, 12:35
RE: SOtM SMS-200 - by hifimanrookie - 12-Jan-2019, 18:22
RE: SOtM SMS-200 - by 5-pot-fan - 13-Jan-2019, 20:56
RE: SOtM SMS-200 - by 5-pot-fan - 14-Jan-2019, 15:33
RE: SOtM SMS-200 - by Confused - 14-Jan-2019, 22:46
RE: SOtM SMS-200 - by hifimanrookie - 16-Jan-2019, 17:01
RE: SOtM SMS-200 - by octaviars - 16-Jan-2019, 17:27
RE: SOtM SMS-200 - by hifimanrookie - 17-Jan-2019, 00:22
RE: SOtM SMS-200 - by 5-pot-fan - 17-Jan-2019, 09:58
RE: SOtM SMS-200 - by cfwotzka - 17-Jan-2019, 10:37
RE: SOtM SMS-200 - by 5-pot-fan - 17-Jan-2019, 11:35
RE: SOtM SMS-200 - by octaviars - 21-Jan-2019, 18:50
RE: SOtM SMS-200 - by hifimanrookie - 21-Jan-2019, 21:20
RE: SOtM SMS-200 - by octaviars - 22-Jan-2019, 06:41
RE: SOtM SMS-200 - by hifimanrookie - 22-Jan-2019, 19:26
RE: SOtM SMS-200 - by hifimanrookie - 25-Jan-2019, 18:39
RE: SOtM SMS-200 - by octaviars - 25-Jan-2019, 20:52
RE: SOtM SMS-200 - by hifimanrookie - 26-Jan-2019, 01:23
RE: SOtM SMS-200 - by octaviars - 26-Jan-2019, 06:55
RE: SOtM SMS-200 - by hifimanrookie - 27-Jan-2019, 04:00
RE: SOtM SMS-200 - by octaviars - 29-Jan-2019, 19:35
RE: SOtM SMS-200 - by hifimanrookie - 30-Jan-2019, 22:56
RE: SOtM SMS-200 - by octaviars - 31-Jan-2019, 18:18
RE: SOtM SMS-200 - by hifimanrookie - 01-Feb-2019, 18:04
RE: SOtM SMS-200 - by octaviars - 01-Feb-2019, 18:29
RE: SOtM SMS-200 - by hifimanrookie - 04-Feb-2019, 10:55

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