how to remove home audio recording electric noise from other building???

By joe muantea ·
Hi...i am JOe..
i am from Delhi..India..Asia.....

my systems,,,,,,

XP-sp2,,M-Audio Delta 1010LT,,,,FL Studio 10....
,,,Audiomaster SM900 condenser Mic....AV40 M-audio studio moniter,,,,,,Behringer Phantom power PS400,,mother board with 3Gb (i put 4Gb),RAM,,,,AMD 2.7Ghz .....(Note: electric around Delhi are not with proper earth line,,only 2 plug not 3 plug)

My problem....

Electrical clicks,,pops,,noises,,hums...switch on\off ...every things from...
my neighborer Auto Car Care center ...and 4-5 Metal Hardware and Motor Workshop...disturb my vocal recording.......(Not from outside but from inside electric waves)

Friends Answers .....

1.. u need to put earth line from your PC power supply to ground by your self...
2.. u need electrical Idolater Transformer.......
3.. u need hums remover and noise reduction vst....
4...u need to change your Window PC to Apple ....
5...stop recording(ha ha ha)....etc,..etc.

can u help me chose the best one ....or any other ideas???
i will be very Happy if any help...
(so sorry for my English too)

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Yep I completely agree

by OH Smeg Moderator In reply to how to remove home audio ...

You do need a Earth Line from the PC to Earth but that is internal wiring and nothing to do with the mains supplied all Earth Lines need to be internal.

I would also fit a good UPS of the Filtering Kind that relies on Mains Voltage to charge the battery and then the battery supplies an Inverter to power the computer.

OH and just make sure that the Earth is actually a Earth driving a bit of copper into the ground may not necessarily be a good earth you need to soak the area that the copper spike is in with salty water. Failing that you could always tie a Earth to Metal Water Pipes.

Changing the hardware to Apple will not make much difference if any by itself as the Apple PS's are still basically the same as a good PC Power Supply and needs an Earth.

Of course if you don't want to do any of the above then your only option is to stop recording so maybe that covers everything. :^0


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Noise Filter

by TheChas In reply to how to remove home audio ...

Another thing you need is a good AC line noise filter.

I'm not talking a filtered power strip here. I'm talking about building a chassis with a high quality noise filter built in.

You want the filter with the best cross between lowest cut-off frequency and highest attenuation.

http://ww w.cor.com/Series/RFI.asp

Sola would be one source for isolating transformers.

http://ww w.solahevidutysales.com/mcr_hardwired_power_line_conditioner.htm

Remove the space between the W's for the links to work.


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The underlying problem...

by dldorrance In reply to how to remove home audio ...

Read and understant this wickipedia entry on ground loops and how fix them http://en.wikipedia.org/wiki/Ground_loop_%28electricity%29

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some thoughts...

by databaseben In reply to how to remove home audio ...

wow. but i'm not surprised. in the u.s., the power supply is kept as clean as possible. but in india, it sounds like a different story.

when it comes to dirty power from the wiring, then you need to use a filter that is conceptually the same for cars, whereas it cleans the power used for the car radio's because the spark plugs and the alternator produces a lot of noise that the radio picks up.

also, the wiring around the pc, is might be producing a magnetic field. the wiring to and from the pc plus the wiring from behind the walls.

for the most part, computer cables should be unraveled and straight and apart from each other.

and if you have an old fashion crt monitor, then its cable should be the expensive one which has "shielding", and the monitor itself should be moved as far away as possible from the pc too. moving the monitor away, straightens the cables and minimizes a magnetic field from being formed when the cables are twisted, looped and intertwined with each other.

also, if you have an old fashion tv and radio's, big or table top size, then its also giving off a magnetic field. also, old fashion rabbit ear antenna's love and attract magnetic fields. (for example, i have a modem and when i hold it with my hand, then touch a set of old rabbit ears on the same shelf with the top side of that same hand, i feel electricity passing between my hand.)

so lastly, separate your peripherals, like modems and usb hubs. because even though they are functional, they are cheaply made and also create magnetic fields and pass them on to the cheap cabling.

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Reponse To Answer

by dldorrance In reply to some thoughts...

To add to the above, you need to check how the audio cables are wired. The shield of the audio cables should be NOT be connected to the an amplifier input plug, which prevents signals traveling on the shield from entering the amplifier. That is what ground loops are all about in the reference to my post above.

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