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Sound "popping"
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31-08-2011 8:59pm#1
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I would say it's a driver issue.
Right click on my computer icon, click on "Manage" then go to "Device manager" find "Sound, video and game controllers" -> "High definition audio device" or something similar, double click on it, under "Driver" tab if "Roll Back driver" option is available click on it and then restart your computer.
If that doesn't help
, try "Update driver" under the same tab and let Windows look for drivers online, then restart your computer and try again.
If that doesn't help either :mad: go to sound chipset manufacturer's website, download and install newest driver, restart your computer and try again.
If that doesn't help, find a hammer and ask for further instructions... :eek:
What's a make and model of your laptop? I can help you to find correct driver.0 -
PapaSierra wrote: »I would say it's a driver issue.
Right click on my computer icon, click on "Manage" then go to "Device manager" find "Sound, video and game controllers" -> "High definition audio device" or something similar, double click on it, under "Driver" tab if "Roll Back driver" option is available click on it and then restart your computer.
If that doesn't help, try "Update driver" under the same tab and let Windows look for drivers online, then restart your computer and try again.
If that doesn't help either :mad: go to sound chipset manufacturer's website, download and install newest driver, restart your computer and try again.
If that doesn't help, find a hammer and ask for further instructions... :eek:
What's a make and model of your laptop? I can help you to find correct driver.
Sony PCG-7134M, thanks Papa!:D0 -
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Pops/crackles are a common indicator of DMA buffer underruns.
There are tonnes of reasons why this could happen.
It could be due to DPC/ISR execution latency. Please download Latmon and run it whilst you work on your PC. It will screen DPC/ISR execution times and list the driver, process or service responsible for the longest execution times. It is normal to have processes hit by hard faults so don't worry so much about them unless there is a correlation between disk access and popping/crackling sounds.
It could also be a driver related issue which may or may not show up in Latmon. I note for instance that the nVidia Stereoscopic 3d service plays havoc with my soundcard and will periodically turn WDM audio into a stuttering mess. This does not show up in Latmon and is not a problem to do with buffer underruns so I have no idea why it does this, but I fixed this problem completely by disabling this service. If you have an nVidia card and do not use 3d I recommend uninstalling the 3d Vision driver or its AMD equivalent.
If you want to know what happens when you get DMA buffer underruns, I recommend downloading a program like the FL Studio demo. Now load down your CPU with plugins, set the DMA buffer size as small as it will go and play a note. The sound you hear will just collapse into a mess of pops/stutters/crackles. To alleviate this, you increase the DMA buffer size which has a knock on effect. The CPU interrupt service handler has more time to generate a new buffer meaning less chance of underrunning the previous buffer and therefore less pops/stutters/crackles.
Some drivers are very badly written and and can hog the interrupt service handler. If the interrupt service handler is tied up executing an interrupt request from another driver or service when your soundcard needs a new buffer NOW, it will skip onto the next buffer and you will get a dropout. Latmon will tell you when this happens. Kernel level processes will also take priority over application level processes which is where your soundcard interrupt request may be deferred (DPC or deferred procedure call). Latmon will tell you if or when this happens. You are looking for any sort of correlation between ISR/DPC/Page fault execution times and popping/cracking sounds. If it feels random then move on below...
Open a run prompt and type in "msconfig". Turn off any non essential processes at startup. I'm thinking anything like Adobe Acrobat Manager, DivXUpdate and all that other crap that you don't need to autorun when you turn your computer on. When you are done, open another run prompt and type in "services.msc". Do the same for blatently obvious crapware like 3rd party software updaters. If in doubt, leave it the way it is.
Try turning off wireless internet and seeing if the problem persists. WLAN drivers are common problem drivers. If your soundcard is on the firewire bus, install the legacy firewire IEEE1394 driver and disable your current one. The legacy driver works better for many users and in some cases eliminates pops/crackles.
Last resort nuclear option: turn off CPU C1E speedstepping, virtualization technology and CPU EIST Function in your BIOS if applicable. I don't like leaving these things permanently off though because they are useful.
Also try setting your power plan in Windows control panel to "high performance". It is common to get underruns when your cpu goes into low activity states and begins disabling or powering down bus interfaces during idle periods.
Do these things one at a time and note if there are any changes, then report back here.
Edit: if video is skipping along with the sound it could simply be that your computer is s**t slow or you are using some codec which is really cpu intensive. Bring up Task Manager and note cpu/memory load during video playback. If its maxing out at 100% alot its time to turn off non essential programs and services, try a different codec and if that doesn't fix it, go out and buy a new computer. 0 -
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