[EDIT dupa vreo 10 minute]:
Hai ca am dat cu bata in balta... Eram pe mai multe forumuri in acelasi timp si am citit ceva care cat de cat avea legatura cu problema mea. Asa ca m-am inscris pe forum (se pare ca nu pe cel care trebuia) si am posta. Dar se pare ca wrong place! Daca totusi aveti chef cititi...
MEA CULPA
[/EDIT]
Uite ca am ajuns si pe forumul asta. De ceva vreme colind diverse forumuri in speranta ca o sa dau de cineva cu cunstiinte tehnice solide care sa ma poata ajuta si pe mine. Sunt obosit si de aceea nu o sa mai traduc textul in romana (cred ca 99% din voi stiti engleza si nu imi place sa fac un lucru de doua ori). M-am uitat si prin Regulament si n-am vazut nimic de genul "Doar in romana" (si RHC=Romania Hobby Center).
Sper ca am postat unde trebuie, daca nu, mutati, stergeti, faceti ce credeti de cuviinta... dar ajutati-ma si pe mine... ca nimeni niciodata nu-mi da nimic.
:)
Si acum la treburi mai serioase:
I bought three months ago an AKG 66 Headphone (with a 3 metter cable) and i have a problem with "background" noise. Even if i don't play music I hear sounds (no, i am not that paranoid http://www.rhcforum....tyle_emoticons/default/wink.gif ) (similiar like you hear when listening to an AM Radio frequency, but not that loud). If I start playing some music I can cover that noise but it is really annoying, and i definetly don't want this as a solution. This noise starts at the same time as i turn my PC on.
I've noticed that if I plug out the headphones and insert back the cable in the soundcard there is no noise for about 10, (15 ,20?) seconds. After that, it starts again. ( if i start playing music louder, it starts exactly that moment) Both left and right phones are affected, but on the right side is a more pronunced.
This noise is influenced by moving the mouse or scrolling windows, moving windows etc. Monitor does not create this because this happens even if I turn it off. My sound card is an AC97 onboard (i know it rocks :D ). Could the video card interfere with the soundcard?
I thought about current on my computer's case. I've connected that case to a pipe to be sure that is grounded. No effect! I've removed my harddrive, cd-rom, I've also took out my motherboard so it won't make contact with computer's case. Still no difference.
I've tested headphones with my cd-player and it sounds ok. There is a small noise but nothing compared with this. I have that noise with all headphones.
I thought it may help setting everything (like modem, aux, mic etc) to mute in widows (and linux) but that didn't helped.
I've contacted my motherboard manufactuer but they couldn't help me. I've rewritten my BIOS, but guess what? NOISE again. I've posted my message on different computer forums but no one gave me any help.
I've noticed that if I keep about 20-30 centimeters of headphone's cable perfectly(as much as i can) straight there is almost no noise.
I've tried to tell you anything i know about the problem, but if you need more info please ask. I need a filter that would allow only low frequencies to pass? (i don't know how you call that in English).
Hope someone has a clue...
regards,
acker
PS. It looks like my ethernet card influence this although does not creates it.
Mainboard: CM33-TC
CPU Celeron Copermine (1Ghz)
128 + 64 SDRam
8 MByte shared onboard Trident Cyberblade i/1 video
1 Realtek Ethernet 10/100 card
240 W power supply
Latest BIOS available installed.
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Mai multe informatii? just ping me... (o sa mai trec pe aici ca vad ca nu am optiune sa imi trimita mail automat cand primesc un replay :D SAU?)
[EDIT:]
Am gasit si optiunea cu mailu.. :D
Aceasta postare a fost editata de aCkEr: 17 November 2004 - 12:23 AM