Warning: Dirty USB audio

[Wferr]

No clue if this is the right section but i felt it belonged here.

 

 

I was messing around and was going to stream a little music making on my phone. I needed to charge it and plugged it into the ports on my Desktop. It started making some strange sounds. (see below audio track)

 

https://copy.com/jS6kn2T0QpXN7BZS/Test.mp3

 

The start of that song is playing through a USB Apple charger. Then i decided to plug it into my computer USB ports and i started to get alot of noise coming through the USB port when it was plugged in. 

 

Having my phone Pluged into the USB ports on my computer with a Quality Corsair TX750M Powersupply still gave me noise on my USB ports.

 

Just a fair warning about USB Headsets that they might add noise to audio. (@MayflowerElectronics correct me if im wrong about this.)

 

 

I just found it quite interesting and i learned something new today

 

(beats made my me

[_ASSASSIN_]

DIRTY USB AUDIO
LOLOLOLOLOLOL
"Dirty USB audio is when your USB trys to send porn to your DAC"
- @EmoRarity

[MayflowerElectronics]

Didn't really hear any noise? You shouldn't be getting any noise, it's a digital signal. Plug it in the rear of the motherboard, you shouldn't have this issue.

[Wferr]

Didn't really hear any noise? You shouldn't be getting any noise, it's a digital signal. Plug it in the rear of the motherboard, you shouldn't have this issue.

Its around the half way mark when i plug it into the Other USB port (ie half way through the audio)

[Alibaladin]

No clue if this is the right section but i felt it belonged here.

 

 

I was messing around and was going to stream a little music making on my phone. I needed to charge it and plugged it into the ports on my Desktop. It started making some strange sounds. (see below audio track)

 

https://copy.com/jS6kn2T0QpXN7BZS/Test.mp3

 

The start of that song is playing through a USB Apple charger. Then i decided to plug it into my computer USB ports and i started to get alot of noise coming through the USB port when it was plugged in. 

 

Having my phone Pluged into the USB ports on my computer with a Quality Corsair TX750M Powersupply still gave me noise on my USB ports.

 

Just a fair warning about USB Headsets that they might add noise to audio. (@MayflowerElectronics correct me if im wrong about this.)

 

 

I just found it quite interesting and i learned something new today

 

(beats made my me

Apple USB Charger does not have Ferrite beads right?

[Wferr]

Apple USB Charge does not have Ferrite beads right?

I dont think so 

[Alibaladin]

I dont think so 

That explains it.

[mr moose]

That noise is usually an indication of poor shielding, grounding or interference. it is not caused by the quality of the psu but the quality of the connections or usb implementation.  I get it when I use a usb hub as opposed to plugging direct into the motherboard.

[ShearMe]

Apple USB Charger does not have Ferrite beads right?

 

That explains it.

 

 

@Wferr, that sounds like a ground loop to me.

[Wferr]

 

@Wferr, that sounds like a ground loop to me.

That wouldnt do it? If it doesn't have feridade cores shouldn't it be louder and with more noise?

[Lays]

Didn't really hear any noise? You shouldn't be getting any noise, it's a digital signal. Plug it in the rear of the motherboard, you shouldn't have this issue.

 

there's a crackle like 1/3 of the way through

[ShearMe]

That wouldnt do it? If it doesn't have feridade cores shouldn't it be louder and with more noise?

 

Ferrite can be used as EMI shielding, but ground loops aren't reduced. EMi wont affect USB audio because it's a digital signal.

[Genecidalic]

That happened to me with my rosewill psu except its with all my usb ports good thing my kraken is analog 

[Wferr]

Ferrite can be used as EMI shielding, but ground loops aren't reduced. EMi wont affect USB audio because it's a digital signal.

I wasnt playing it via USB audio i was doing it through A 3.5MM jack

[amiah137]

Your avatar looks sooo much cooler with that audio track playing in the background lol 

[ShearMe]

I wasnt playing it via USB audio i was doing it through A 3.5MM jack

 

On a phone plugged in to USB power... right? Hence the ground loop.  :rolleyes: