background noise

An area for people to discuss Scope related problems, issues, etc.

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valis
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Re: background noise

Post by valis »

Are you running connected audio gear from power outlets that are across the room, or on different power circuits that are widely separated?
Pete
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Re: background noise

Post by Pete »

Is that the Cubase mixer in the printscreen ?
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garyb
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Re: background noise

Post by garyb »

are you monitoring in cubase(software monitoring)? if so, that might be feedback...
electrolover
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Re: background noise

Post by electrolover »

by the way, i have a complain. sfp always start on taskbar and desktop.is there any way to starting taskbar only as default. everytime clicking hide very annoying.

about noise,i will try somethings today later if i succeed write here otherwise no need to write and switch to rme hdsp9632 (i really hate its mixer but noise free and all digital ports working i never able to use scope's all digital ports,toslink b ok but a never worked) or better sell both of them and buy an external hardware seems hassle free.
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garyb
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Re: background noise

Post by garyb »

what- is your card broken? ports that don't work? was it new?
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valis
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Re: background noise

Post by valis »

electrolover, perhaps recording a short clip of the noise you get from the analog sources would help.

GaryB, perhaps his daughtercard isn't seated properly?

Also, I've got an RME HDSP card+Multiface in my main box. I never really thought of its mixer as a 'mixer' to 'mix' on, more like a routing interface to get signals into & out of the computer. In almost all cases I set the levels to be '0'/nominal as RME has gone to great pains to insure that signals are passed transparently with no gain or reduction (bit-transparent). You certainly can't do any engineering beyond adjusting mix levels...
electrolover
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Re: background noise

Post by electrolover »

hi,

i separated doughter card and clean both of them then i use philips contact cleaner. card seems physically as usual. i 've tried again. nothing changed.

toslink digital a, i'm not able to use it since i bought it, i don't know why. toslink digital in/out working ok.
i bought it from a german guy from germany, second hand in 2006 i guess...it was so expensive but here it was more expensive actually still expensive ;) and ver.4.5 was very expensive...
anyway i never have time to make music since 2004 but i have time now.

rme, i bought it in 2005 but i never use it because of the scope came in.scope has perfect asio. i dont understand rme's mixer, poor asio performance but noise free very clear sound little card.

anyway at least is there any way to stop showing on desktop this scope platform thing when winxp opening. i want to see it only bottom right corner and if i need to do something about it i can click its icon right from there no need to showing itself (with noisy,dirty analog source:) on my desktop.
greenbluegold
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Re: background noise

Post by greenbluegold »

My card was purchased new from soniccore last year about this time. The analog input has always had this noise -- when the audio input and L-R output mixer levels is set at 0.0 it is very audible. It's even audible when I lower the L-R levels. It is kinda loud. I will record a snippit and post it for y'all to hear. It occurs in a barebones project with only a mixer and no other devices. It occurred when I had no PCI cards installed in my computer except for the scope card.

It occurs when anything/or nothing is connected to the analog inputs so long as the audio in is activated in the mixer section.

I'm monitoring from the analog outs. No other software needs to be running to make the noise. SFP only. It is not a feedback issue.

My computer has a 4 year old Antec/case power supply. AFAIK I've never had an issues with the power supply. It is currently plugged into a grounded power strip, but is not run through any "power conditioner" I'll try that and see if it helps.

I always assumed it was a shortcoming of the card and was willing to live with it as scope is so useful in other ways, but now that I hear that others are not experiencing this noise (save for electrolover) I'd like to solve this problem.

I've considered getting an 16ultra to pair with my pro card, but frankly, the noise on the audio input left a bad taste in my ears and I am wary encountering the same problem.

From what I understand, this must not be too common an issue, so fingers crossed, we'll be able to figure out what's wrong.
electrolover
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Re: background noise

Post by electrolover »

ah! at least we are two:)
i bought cheapest analog the digital converter from ebay not for ad converter but use as a plug converter rca to coax and/or toslink. when i receive it i will plug analog mixer to cheapest hum filter (rca in-rca out), hum filter to A/D converter,A/D converter to scope (with toslink cable).this config would be silent because the only problem activating analog source on routing window.btw behringer has a toy hd400 hum filter but expensive here.europian and american people can buy it for great price.actually analog source producing some sizzle when move the mouse around this is different than usual continuous noise.
electrolover
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Re: background noise

Post by electrolover »

Pete wrote:Is that the Cubase mixer in the printscreen ?
no. it is reaper 2.53.
electrolover
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Re: background noise

Post by electrolover »

garyb wrote:what- is your card broken? ports that don't work? was it new?
no not broken, toslink a in/out not worked (there is red light but i never can get sound) but b in/out ok. no not new.
Fluxpod
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Re: background noise

Post by Fluxpod »

electrolover wrote:ah! at least we are two:)
i bought cheapest analog the digital converter from ebay not for ad converter but use as a plug converter rca to coax and/or toslink. when i receive it i will plug analog mixer to cheapest hum filter (rca in-rca out), hum filter to A/D converter,A/D converter to scope (with toslink cable).this config would be silent because the only problem activating analog source on routing window.btw behringer has a toy hd400 hum filter but expensive here.europian and american people can buy it for great price.actually analog source producing some sizzle when move the mouse around this is different than usual continuous noise.
I am afraid that a hum filter wont work because there is a problem with grounding in your appartment.If it works thats cool but i really dont think it will.You need an electrician who can fix that for you.Even 1 groundet outlet would be fine.Classic nulling (its called like that here in germany when you put the groundpin on neutral) is a very very bad idea with audio gear.The rme cards arent as prone for this as scope cards.Different designs.
electrolover
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Re: background noise

Post by electrolover »

thank you for the info. i know hum filter not for scope it is for analog mixer and sound modules i mean just in case...
grounding big problem i tried to make it happen when i moved here but it seems hard because i live top of the apartment and there is no grounpin whole electricity installation so it must be done top to basement but there is concrete, no earth. thus there is no place to embed copper stick.
Pete
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Re: background noise

Post by Pete »

I don't think grounding is your problem, since your other cards don't give the problem.

But, to find out if it's really the scope card, you should unhook everything else and look at the scope-mixer's led's, not Cubase's. Listen from the Scope analog-out, not something else. Don't have any other software-mixers involved.
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garyb
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Re: background noise

Post by garyb »

grounding issues inside the case, could cause problems, but his card IS broken if adat a doesn't work!
Pete
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Re: background noise

Post by Pete »

Oh yeah,
I spritzed right over the ADAT message.

Compressed air?
electrolover
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Re: background noise

Post by electrolover »

i dont understand.how could that be?adat b ok adat a seems ok but no sounds. anyway im not pro about electronics and pcb boards.it seems ok.posibble to fix if has problem?and who can fix it?
Pete
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Re: background noise

Post by Pete »

I would think that a Scope card with something wrong with the ADAT electronics, would give you an error message. You could email support about that.

I had a problem with my Power Pulsar card, and you can see my post on this forum. It's not like your problem, but I straightened out the mildly-arched mounting bracket, and I blew out the ADAT sockets, and everything else, with compressed air. I don't know, maybe it's not good to do it. But now the problem is fixed.
If you do it, I turned the card so that the ADAT's faced the floor. So if anything was in there, it could fall out.

I also took off the I/O plate and the cable assembly, and blew out all the sockets, pins, etc.
I used a can of compressed air (only!) from Fry's or Radio Shack.
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Neutron
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Re: background noise

Post by Neutron »

you can check ADAT by plugging back in to itself. that way you can be sure there is no other equipment involved
electrolover
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Re: background noise

Post by electrolover »

ok i 've checked again. plug in toslink cable to optical a out and i didnt hear sound but out b ok.


i can blow my whole pc case i have a little compressor.i will try tomorrow but i've already cleaned the card with contact cleaner (i didnt touch to optical ins/outs)
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