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#1
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High Pitched Noise in Speakers
My wife's computer had been using the onboard sound system. The moment
she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. |
#2
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wrote in message ... My wife's computer had been using the onboard sound system. The moment she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. Doesnt sound like a sound card (onboard or otherwise) problem nor a speaked problem. Something in the vicinity is causing this. The techies in here will give a proper explanation about shielding etc. Simple thing (simple for me anyway - dont know how yours is set up) would be to remove things from around the PC or better, move the PC to another room. If it still makes the noise there is something within or attached to the PC that is doing it. Its then a process of elimination and it 'might' even be the old PSU. Shaun |
#3
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wrote in message ... My wife's computer had been using the onboard sound system. The moment she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. turn down your pots to 3/4 max |
#4
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Turn the Mic. off.
wrote in message ... My wife's computer had been using the onboard sound system. The moment she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. |
#5
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On Thu, 12 Aug 2004 12:26:51 -0700, "JAD"
wrote: wrote in message .. . My wife's computer had been using the onboard sound system. The moment she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. turn down your pots to 3/4 max Thanks. I'm assuming that "pots" here refers to the potentiometers that control volume. Normally they are at about 1/4 to 1/2 max. The sound disappears only when the speakers are switched off OR are not connected to the soundcard jack. |
#6
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On Thu, 12 Aug 2004 23:43:21 GMT, "jpsga" wrote:
Turn the Mic. off. Thanks No mic is connected. Mic channel in the volume control applet is set to mute and the gain switch is unchecked. wrote in message .. . My wife's computer had been using the onboard sound system. The moment she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. |
#7
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On Thu, 12 Aug 2004 17:56:32 +0100, "Shawk"
wrote: wrote in message .. . My wife's computer had been using the onboard sound system. The moment she turned on the computer the speakers produced a high pitched tone. The tone would get louder if she turned the volume up and disappear when I disconnected the speakers from the computer. I assumed there was something wrong with the onboard sound. I recently upgraded from a SB Live to Audigy 2 and decided to put the Live card in my wife's computer. It produces the same sound but didn't in my computer. She's running an ECS socket 370 motherboard with an SiS chipset and a Celeron Processor (she doens't do much with the system and she seems happy with it). I built the whole thing into a case I purchased --- a suntek color case because she wanted something with color. So, the sound is produced by the onboard sound and the Live Card. I changed a different set of speakers and they also produced the sound. Neither set of speakers was top of the line. I'm considering ordering a new case with a decent power supply and wonder if that might actually be the problem. I have heard of poorly designed power supply noise leaking into the sound system but don't know if this is just an old geeks tale. Any suggestions appreciated. Doesnt sound like a sound card (onboard or otherwise) problem nor a speaked problem. Something in the vicinity is causing this. The techies in here will give a proper explanation about shielding etc. Simple thing (simple for me anyway - dont know how yours is set up) would be to remove things from around the PC or better, move the PC to another room. If it still makes the noise there is something within or attached to the PC that is doing it. Its then a process of elimination and it 'might' even be the old PSU. Shaun Thanks, I have tried moving the wires around. I've tried unplugging the speakers from the surge suppressor and plugging them directly into the outlet. I've turned off every electrical device except for the computer. I noticed today that sometimes when my wife shuts down the computer she doesn't turn off the main switch on the surge suppressor, which then shuts down power to the speakers and monitor. Sometimes the speakers make the sound until they are powered down. Sometimes they don't. She uses one of those under the monitor power center/surge suppressor deals, as do I. |
#8
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#9
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In case anyone cares.
I replaced the power supply in my wife's computer. I was surprised to find that it was a 230W job. I installed a 300W sparkle from newegg. The noise is gone. So a cheapo power supply can affect sound. Thanks for all your suggestions. |
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