Macbook - ALL audio distorted, fuzzy. Even when audio is burned to CD.

For a few months now the audio on my MacBook has seriously degraded, and not just in iTunes. All audio coming from my computers speakers, headphones, internet (youtube, beatport, etc). All audio (music and videos) on my iPhone are now distorted and fuzzy. Seems to just effect high frequencies. Low's and Mid's seem fine. Instead of sharp, clear highs they are broken and fuzzy (like a bitcrusher effect). It sounds like the gain is turned all the way up.
I'm a DJ and only use WAV or AIFF formats. This loss in audio clarity is completely unacceptable for me. I played around with the audio MIDI setup in utilities but it doesn't change anything. What is really odd is that when I burn the raw audio track to CD (I burn with ExpressBurn) the audio on the CD sounds corrupt as well. It's like all my audio files are corrupt. As well as all audio output. Did I get hit with a virus? Anyone else with this problem?
I recorded and uploaded some audio samples to try and convey what I'm talking about. These are uncompressed WAV files and they were recorded below 0db (nothing in the red). Try and compare the tracks with the tracks from youtube or something. I'm trying to remove all doubt that my audio is messed up. Hoping this helps. Thanks y'all!!
W&W - D.N.A.
http://www.box.net/shared/d4e7fot5mf
Rex Mundi - Techanza
http://www.box.net/shared/6aeju9t4tl
Thanks again - AW

IMO, you have the same ground problem, but your Samson DI is not a transformer isolated box. It's an active DI without a transformer, according to the schematic, and that ground lift switch might help IF the problem is an actual ground loop, with multiple ground paths causing the problem. You still have at least one ground path directly connected from the unbalanced input, or you wouldn't hear anything.
You should try completely isolating the audio ground system from the computer/display system with a true audio transformer isolator. In the States, the cheap answer is the Radio Shack device previously mentioned in my other post. A DI that actually has an isolation transformer should work, too.
I also have no problem with external display and headphones, or external speakers and no display. However, I describe my sound interference as low level digital noises that vary with the external display screen content, not a constant buzz or hum. I conjecture that could be a related issue - or not, I think it could depend on the exact grounding scheme used by the audio and display devices connected.

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Hi PatB11902,
Thank you for visiting Apple Support Communities.
If your MacBook Pro does not seem to power on, but the caps lock key will light up when you press the caps lock key, you are likely seeing a video issue.
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Message was edited by: SisterBlue

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RE: Macbook Stuttering, Audio Distortion

FYI
As discussed in Macbook Stuttering, Audio Distortion,
The solution to this problem is as follows:
The fix is to blow out nearly four years of dust (in my case), using the instructions given here (for replacing a fan...)
http://www.ifixit.com/Guide/Repair/Installing-MacBook-Core-2-Duo-Fan/522/1
You don't need to remove the fan, but go as far as removing the keyboard, and then you can simply use an air-duster to remove every bit of dust you can find.
If your macbook's heatsink (as in my case) was cleaned by a professional in Apple Store, and you still keep having problems with youtube, ichat, skype and have stuttering, audio and video distortion and your 2+ghz intel macbook behaves as if it's an early iMac G3 - you have to do all steps described at ifixit.com.
When I have taken out my macbook's fan (the heatsink was perfectly sterile) I have found a 5mm thick layer of compressed dust blocking 97% of the air exit.
Removing the blockage has helped and my macbook is operating like it's new.
PS: It's sad that people at Apple Store do not do their job properly.

Your processor is momentarily saturated. It's not really a 'defect' that is covered under warranty.
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I no longer have sound when playing my clips through adobe premiere elements 12. How to I correct this problem? I have checked all audio levels and there is no mute on etc. I have updated to 12.1. Still no sound.

I no longer have sound when playing my clips through adobe premiere elements 12. How to I correct this problem? I have checked all audio levels and there is no mute on etc. I updated to 12.1, but still no sound in any clips. Even not on old files which used to work.

bfun
What computer operating system is your Premiere Elements 12/12.1 running on? Can we assume that this audio plays back OK
on the same computer when you are using a computer player independent of Premiere Elements?
What are the properties of these clips that worked before but do not know with regard to sound
For now, I will assume that you are working on Windows 7, 8, or 8.1 64 bit.
Have you checked the Edit Menu/Preferences/Audio Hardware ASIO settings? Do you have any 3rd party audio devices incorporated in your computer environment?
Please delete the Adobe Premiere Elements Prefs file and, if that does not work, then the whole 12.0 Folder in which the Adobe Premiere Elements Prefs file exists. The Windows 7, 8, or 8.1 64 bit path is
Local Disk C
Users
Owner
AppData
Roaming
Adobe
Premiere Elements
12.0
and, in the 12.0 Folder, is the Adobe Premiere Elements Prefs file that you delete. If that does not work, then delete the whole 12.0 Folder in which the Adobe Premiere Elements Prefs file exists. Make sure that you are working with Folder Option "Show Hidden Files, Folders, and Drives" active so that you can see the complete path cited.
Do you have installation files or installation disc with the purchased serial number in case we need to resort to uninstall/reinstall?
We will be watching for your follow up.
ATR

Macbook - ALL audio distorted, fuzzy. Even when audio is burned to CD.

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