X-Fi XtremeMusic - High Pitched No

Been trying to resolve this problem for a couple days and thought I'd ask here. I've done a clean boot and reinstall of the drivers as told in the FAQ, and used the latest drivers from the website.
I just got the game Company of Heroes a couple days ago, and am experiencing a strange problem with sound. About 0 minutes into playing the game, all sound cuts out and is replaced with a high pitched noise like a hearing test at the doctors office, and I need to reboot the computer completely to get sound back. This only happens in this one game. I can play HL2 for 3 hours straight without any sound issues.
I'm hoping it's not a power issue, as my computer only has a 500 watt power supply. Specs are:
E6400 C2D Processor
2x 256 MB GeForce 7900 GT in SLI
250 MB SATA HD
SB X-Fi ExtremeMusic in Game Mode
Considering the rather punishing requirements for CoH as compared to HL2 or any other game I have, I hope it doesn't mean all the components are trying to access more power. Anyone have any ideas for this? The computer is brand new.

CMitchell wrote:
ASUS P5N32-SLI SE Deluxe. It's strange it only does it for one game though, I don't have any sound issues in any other games, and from what I read of the SCP it seems to be all the time. Drivers are the newest beta version, 050Message Edited by CMitchell on 09-25-2006 0:47 PM
I have the same board as you with a Fatalty Xfi card and get the same high pitched sound when playing Company of Heroes. All other sound is gone, windows, game, VoIP until I reboot. Using the current drivers on this site.

Similar Messages

X-fi xtrememusic high pitched noi

My x-fi xtreme music has a high pitched noise whenever i turn my speakers on, anyone plz help me?

calvin02 wrote:
My x-fi xtreme music has a high pitched noise whenever i turn my speakers on, anyone plz help me?
You might be experiencing feed back. This is caused when interference from one magnetic field causes harmonic dissonance with in another. Try moving your speakers around a bit, and using THX setup console to calibrate them. Hope this helps you.
Good luck.

High pitched and prone to breaking up phone calls via Continuity through iPhone 5s on computer end

On my Mid 2011 Mac mini running OS X 10.10, when I attempt to call someone through my iPhone 5s, the sound is extremely high pitched and prone to breaking up on my end. It sounds fine on the other end, when I use my iPad 2, and when I just call on my iPhone. Any idea why? Sound recording of my voicemail login prompt from my Mac: https://mega.co.nz/#!ocRWgLoD!P-Ps_mHRgXAag1jfaYPU2ZpGfECVP2YR9Z-E4G4Z4Sk

I'm experiencing the same issue between my 5s (8.0.2) and my late 2012 Mini (10.10). It reminds me of the kind of sounds you get with digital audio clocking issues between devices. I've scoured the internet, tried several different solutions, and nothing has worked yet.

High pitch noise in CS4 and CS5.5

Hello.
Firstly I want to say that yes I know people have asked this question before but as far as I can tell none of them have been solved. Some have somewhat useful answers but none of them truely solve the problem. This thread in particular probably has the most information about the problem I'm having http://forums.adobe.com/message/4298535#4298535
I recently tried Premiere Pro CS5.5 and CS4 (trial version) to replace my Corel Video Studio X6 which tried to replace Windows Movie Maker. Video Studio and Movie Maker both crash whenever I imported large video files.
Anyway I'm getting a problem where the video files I import to Premiere Pro CS4 and CS5.5 have a high pitch noise in the video preview.
It's a high pitch noise almost like it's getting feedback from something. Also when someone is supposed to be talking there's a very low distortion, like the audio started playing in very slow motion but the high pitch noise is still present.
I'll put a link at the end with the video file that's giving me trouble.
The video and audio are in a single AVI file. The video format is H264 shot at 60fps and the audio should be Mpeg-1 L2, 48khz at 320kbps. I don't know if the video's audio is in 24bit or 16bit.
I've tried different settings for premiere. Trying 60fps and 30fps for the framerate for the project. Trying 44khz and 32khz and 96khz didn't fix it. Using the "Desktop" preset in CS4 and Custom for CS5.5.
My audio hardware is a Logitech G930. It's a wireless USB headset with microphone. My motherboard audio is Realtek HD Audio. Both are enabled but I only use the headset now and nothing is being sent to the Realtek audio chip (according to Windows' sound options). The headset plays audio at 16bit 48khz.
The video file plays fine in every media program I own that can play the h264 codec. With the exception of Movie Maker and Video Studio x6. Video Studio will preview the video and audio just fine but when I try and skip around the program hangs and crashes. Movie Maker just plain crashes when I try and import the video. Some of the programs that can play the video are VLC, Media Player 11, and Media Player Classic.
I'm not sure if Final Cut Pro has the same problem. I don't have a Mac so I can't test it.
Here's a sample video that works the way it should. I pulled a BIK file from a game and converted it to H264 in AVI. Not sure what it's audio format is.
http://www.mediafire.com/watch/15fr85n78xfu94x/Opening_Cinematic_Placeholder.avi
Just click the download button at the top right.
Here's an afflicted file. Not the exact specific file I have been talking about, but it has the same codecs. This one is shorter in length and smaller in size. It still has the high pitch noise, but since there is no one talking in this you don't hear the weird low pitch distortions.
http://www.mediafire.com/watch/qqbk0n6io0lspn5/eso_2014-02-28_20-08-18-959.avi
Just click the download button at the top right.
If there's anymore infor you need let me know.
Thanks.

>single AVI file. The video format is H264
H.264 will not work inside an AVI wrapper http://forums.adobe.com/thread/854115
-Insignia camera uses H.264 to either AVI... SOME to MOV wrapper
-so use the MOV wrapper if YOUR Insignia camera offers that option
-Says VLC will convert in reply #6 http://forums.adobe.com/thread/1172956
>can't believe a professional piece of software can't handle something this simple
As Jim said, not within the design specifications because it is non-standard video

Power Mac G4 MDD 1.25GHz DP often completely locks up in the first few minutes after booting, sometimes with the spinning beach ball, normally with a very high pitched whining noise.

Over the last few months my Mac has developed a worrying habit.
Within the first few minutes of starting it up (perhaps on average about 50% of the time) it will completely lock up. This may happen at the Log In screen (if I start up the Mac & then leave it for a while) or during normal use.
Often the first symptom is a very high pitched (but quiet) whining noise that seems to come from the loud speaker on the front of the Mac. The pointer may freeze at this point, or it may still be moveable for 5 or 10 seconds before it freezes. It sometimes turns into the spinning beach ball during this. Once locked up the only way I can restart the Mac is to hold down the power button on the front for a few seconds to completely reboot the machine.
Once the Mac has restarted, it usually behaves normally, almost always for the rest of the day. The initial lock up & resulting restart only normally seem to happen the first time I use the Mac that day.
The only peripherals attached to the Mac (apart from the display, keyboard & mouse) are an ADSL modem, a USB printer and a pair of Apple Pro speakers, and this setup hasn't changed since long before the problems started, so I'm confident that I can discount the peripherals causing problems. I doubt that unplugging the speakers, for example, would have any effect.
I've run Disc Utility, OnyX and DiscWarrior without anything major cropping up. My instincts (I've been troubleshooting Mac problems for 16 years) tell me that I have a fundamental hardware problem, possibly with one of the 4 RAM DIMMs installed.
The RAM configuration is shown in the attached screen grab.
I'm considering removing one DIMM, running with 1.5GB of RAM rather than 2GB for a while, and repeating with a different DIMM removed each time until I can hopefully isolate the dodgy DIMM.
Do people feel this is a sensible approach, or should I try something else first?
Many thanks.

Sometimes visual inpection will show bulging tops/sides., my guess is if it is it's most likely in the PSU.
Possible cheap fix, You can convert an ATX PSU for use on a G4...
http://atxg4.com/mdd.html
http://atxg4.com/

Since Yosemite upgrade, high pitch noise creating case vibration on MacBook Pro (15-inch, Mid 2009) (on watching the keynote online)

Hi,
Great work on Yosemite, great new design as well.
Several problems since the Yosemite upgrade though :
    - When playing high pitch noise (watching the keynote for example), the speakers make the case around it vibrate. This was not happening under Mavericks and previous OSXs.
    - This page (post editing) does not allow the right click (works everywhere else as far as I'm aware).
    - when changing the volume, I have now the noise feedback when clicking on shift+volume up/down and no sound when clicking on volume up/down on my keyboard (was the inverse before).
    - The keyboard light was stuck in off, had to restart the computer.
More general problems (covering the last OSX since introduction of 10.9) :
    - lack of possibility of choosing for a 3x3 set of desktops as it was before (the new mission control only allow us to have a horizontal set of several desktops)
    - Notifications cannot be turned off automatically when being in full screen. (only options for auto turn off given are "display is sleeping" oO and when "mirroring on another display" -> meh, would have prefer when having an app in full screen)
System :
MacBook Pro (15-inch, Mid 2009)
Model Identifier: MacBookPro5,3
Processor Name: Intel Core 2 Duo
Processor Speed: 2.66 GHz
Memory: 8 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP53.00AC.B03
SMC Version (system): 1.48f2

Thanks for your lengthy reminder dude, I have a similar Mac with yours. I suspect its a software fault because it happens after I upgraded to Lion, 10.7.2.

How can I remove high-pitched distortion from voice-over?

Hi folks,
I'm completely new to fixing audio. I am making a short film, and for a voice-over, I recently had to do an interview over the phone (the subject lives in a very remote location). Actually, I used GoToMeeting, we called into the conference call feature from our phones, and I recorded the meeting into a wmv file. Then I re-encoded it using Expression Encoder so I could pull it into Adobe Audition.
I am attaching a short phrase (extracted as a .wav file) from the interview in the hope that someone can tell me how to improve the quality of the sound. I have Adobe Premiere Pro and Adobe Audition, both CS6 and CC versions.
Short voice recording - Creative COW
1. Can anyone tell me, please, how to get rid of the high-pitched "ringing" kind of distortion that we hear on each of her loudest syllables? Also, does this particular type of distortion have a name? I kept finding articles on fixing sound, but wasn't sure what I'm dealing with here, so I wasn't sure which techniques were likely to work. Tried a bunch, and the overall sound got better, but so far nothing has fixed that high-pitched distortion.
2. After getting rid of that ringing distortion, what are your recommendations for making the voice recording sound as rich, smooth and full as possible? In real life, this woman has a BEAUTIFUL, rich voice. But the recording sounds like a flat telephone call (because it is).
Thanks in advance,
Mary

Well, I don't think there's any miracles to be had here. As you say, it's a telephone call and I fear that, since phone lines filter out anything above about 4k, there's no way of replacing it.
I had a look at your file in spectral view and you can clearly see the original material going, as expected, up to about 4 kilohertz--but, above that, there's a generalised area of noise. My suspicion--and it's only a suspicion--is that during your double conversions (to wmv then through a third party app to something else) one of them has added the extra noise as it your original was full bandwidth.
Anyhow, best I could do was use the Marquee tool in Spectral View, draw a rectangle around the upper area (you can see a clear boundary between the programme content and the random extra frequencies) then just delete everything above just over 4 khz then delete.
As for making a phone call sound full and rich, if there was a way to do it, when I was working in TV we could have saved hundreds of thousands a year by using phones instead of far more expensive circuits!

Is my Mac Pro the cause of high pitch monitor noise?

I am encountering a faint but persistent high pitch noise through my Yamaha HS-50M monitors when my Edirol FA-66 interface is plugged into my computer via firewire ca ble.
I've read all these threads which sound very similar to my issue and have tried all the pertinent recommendations presented so far:
Monitor buzzing noise NEED HELP!
Help fixing signal hum/mouse coming out of monitors?
Electric shocks and Noise in a home studio
KVR :: View topic - Interference question. Computer and external audio interface
Just to be clear, my problem is similar but not identical to the problems listed in the threads above. Mouse movement or computer activity doesn't effect the monitor noise I'm hearing at all, it is merely a constant sustained high frequency tone that's emitted from my monitors when my FA-66 interface is plugged into my MacPro via firewire cable. My speakers are silent (aside from their own self noise) so long as my FA-66 isn't connected directly to my computer. Even when my FA-66 is powered on via its AC adaptor but not connected to my computer via firewire cable there is no added noise in my monitors. It's just when I make the firewire connection between my interface and my computer that the high pitch noise appears in my monitors.
I used to run my Edirol off of my older MacBook and never had this issue. I just recently upgraded to a new MacPro and am encountering this issue for the first time.
Since the noise is eliminated when I disconnect the firewire cable from my interface, I believe the sound is being caused by interference from my computer, which is then transmitted through my firewire cable into my interface.
My setup is this:
Grounded Wall Outlet > Furman Power Conditioner > MacPro Desktop Machine > Edirol FA-66 > Monitors
I am using TRS-XLR Mogami Speaker cables to connect my interface to my monitors and am using Mogami cables throughout my system.
All of my audio gear is being powered through my Furman power conditioner: my computer, my FA-66 interface via its AC adaptor (not firewire bus powered), my speaker monitors, and all my other audio equipment.
I don't believe I'm picking up interference from any of my other cables and wiring and this doesn't seem like a grounding issue. Like I mentioned, the noise is gone when I disconnect the firewire cable from my FA-66 interface.
I do have some other hardware in my setup (my computer screen monitor, a USB hub, AC power supplies and cords to power external hard drives, a lamp) that are receiving power from a separate surge protector strip plugged directly into a different wall outlet than the one my Furman conditioner is plugged into. I don't believe any of these other devices are the cause of the interference noise because when I unplug all these items from their respective wall outlet, I still hear the exact same noise when my FA-66 is plugged into my computer via firewire cable.
All signs seem to point to my firewire cable and/or my computer.
Originally I started with a different firewire cable and swapped it out for a newer and higher quality, gold-plated firewire cable meant to cut down on interference. This cable swap did help reduce some of the noise my monitors were picking up, but did not eliminate it entirely.
I then invested in some ferrite core clamps and placed those around each end of my firewire cable (one right by my computer's firewire port & one right by my FA-66's firewire port). This helped a little more but did not eliminate the high pitched sound entirely, just made it even quieter. The hole diameter of the ferrite core clamps is slightly larger than the diameter of my firewire cable, however, and I'm going to order more clamps with a smaller hole diameter that will ensure a snugger fit around my firewire cable. Do you think this may help things more?
I also lifted the grounding pin in my Edirol, tied a copper grounding wire around it and connected the other end to my MacPro's metal case with alligator clamps in an effort to better ground the two suspect pieces in the chain. This seemed to have little to no effect beyond what the ferrite cores were able to clean up. (I got this idea from the GS thread contained in the first link above.) I don't know much about hardware electronics but thought I would try this out just to see if it would help. The fact that it didn't help, to me, seems to reaffirm that the system is grounded properly, because if it weren't I would have possibly noticed an improvement by making a grounded connection between my interface and computer. Please correct me if I'm wrong about this.
I even tried plugging my Furman power conditioner into an entirely different wall outlet, but this didn't change things at all. I do have one more unused wall outlet I can try but don't think this will make much of a difference because I'm 99.99% sure this isn't a grounding problem and that the sockets I'm using are properly grounded. My Furman isn't registering anything abnormal and seems to be functioning properly.
As of right now I've been able to make significant improvement to the noise problem and have eliminated it by 90%. The high pitch noise through my monitors is virtually eliminated but I still notice a faint bit of added noise when interface is powered on and connected to my computer via firewire versus when the firewire cable is disconnected.
Could my MacPro be outputting some kind of interference which is being picked up by my firewire cable and transmitted to interface and monitors? I've read that sometimes a computer's power supply unit can output a large amount of EMI or dirty electrical interference. It seems surprising to me that Mac's professional desktop machine would cause a fundamental issue like this though, especially since it is designed for being able to work in a professional audio recording setup.
Any other ideas people can provide as to what may be causing my added interference and how to treat it would be greatly appreciated. Thanks in advance for your help!

What kind of sound card are you using exactly? It seems like you're sound card is picking up EMI or RFI from your computer when it's plugged into a wall outlet. Are you using a power conditioner in your setup to help clean up your power supply?
Try googling EMI & RFI, there are many online resources which detail how to troubleshoot and deal with these problems. http://www.arrl.org/radio-frequency-interference-rfi
I finally solved my problem by upgrading to a higher quality audio interface (Focusrite Pro 40). This was able to cut out the high frequency RFI signal being output from my MacPro computer. I get the feeling many of Mac's higher end computers tend to output dirty electrical signals which is why so many people have this similar problem.
Try cleaning up your power supply, then maybe use different, higher quality sound cards or interfaces with your setup to see if the issue gets solved. The problem most likely lies with your computer and if you can get a high quality interface that can cut out the noise, that may be your only solution. It worked for me.
Good luck!

Bazaar high-pitched squeal/fuzz noise in iTunes when scrolling.

System info:
I'm using iTunes 6.1.3 on Windows XP Pro, and I'm wearing headphones (i don't have regular speakers).
Issue:
I noticed that if I click and hold down the scroll bars in the Library in iTunes (the scrollbars for Genre, Artist, and Album), I hear a faint high-pitched squeal or fuzz noise coming into my headphones. (If I scroll through the songs themselves, I do not get this noise. It's just the three above-mentioned scroll bars). Since it's pretty faint, I only hear it if nothing else on my computer is sending out music or noise (or only if the noise is also very quiet at the time). As far as I recall, I don't remember hearing this in conjunction with any other program.
Question:
Has anyone ever heard of such an issue? It's not really a big deal, but it does make me rather curious to know what's causing it. Try it on your own computer and let me know if you have the same issue. Could it be a sound card thing? But then why would where I click in one particular program have anything to do with it?
Example file:
If you'd like to hear what I'm talking about (Since you might be tempted to think I'm making this up), I created a wave file recording of it. (I didn't want any mp3 compression to confuse the matter, so that's why it's a wav. Not that I know much about that sort of thing... but just in case.) I uploaded it to here: http://aranel.alasse.googlepages.com/itunessqueal.wav (Sorry it's so big... 5.3 MB... Obviously because it's a .wav file. It's a little over 30 seconds long. )
Process of making example file:
I recorded it using Audacity (which is an open source program that can be downloaded from sourceforge.net). In Audacity, I set the recording/input "channel" to be "Wave Out Mix". I turned the Wave out volume and the master volume all the way up, then pushed record. (Turning the Wave volume up caused additional fuzz, so concentrate on the contrast between the sections of the recording to hear the actual sound I'm referring to.) It's a pretty quiet track, so you'll probably have to turn the volume way up.
It's a 30+ second clip. Here's how the seconds break down:
For the first five seconds, I just did nothing.
From seconds five through 10, I clicked and held down the Genre scroll bar in iTunes.
From seconds 10 through 15, I did nothing again.
From seconds 15 through 20, I clicked and held down the Artist scroll bar in iTunes.
From seconds 20 through 25, I did nothing, once again (I kept doing this so you could hear
the difference).
From seconds 25 through 30, I clicked and held down the Album scroll bar in iTunes. (Notice that this one seems to be slightly higher in pitch than the noise from the previous two scrollings I did.)
The last couple seconds, I did nothing again.
More weirdness:
Changing the volume on my computer (both the master mix, and the wave out mix, and any other mix that exists (e.g. line, microphone, CD Player, Mono out, etc.)), or even MUTING the volume of any of these mixes does not make the sound go away or change in volume at all! It's always at the same volume no matter what I do. I can only make it go away if I unplug my headphones (remember: I don't have regular speakers. If I did have those, unplugging the headphones might only change where the noise is heard.). Changing the wave out volume only affected the recording (which is why I turned it way up. If I turn the wave out volume all the way down, then push record, I still hear the noise coming from iTunes while I'm recording, but if I play the recording back, the noise is gone.
Very bazaar...
Any input anyone?
Windows XP Pro

Called Apple support, they said they do not support the use of iPods in cars, they may have sold you your car kit, but they dont support it. So buyer beware. I have three cars, I upgraded my Nano to 1.1, which is the latest, didnt fix it. I went out and tried it in all three cars, squeals in the Toyota (with Monster Cassette Adapter to Original Radio, hisses in the Nissan (with Audio 3.5 cable to audio jack to after market Sony radio), and works fine in old Mercury (with 3.5 cable to old JVC with audio jack).
So I better take care of the old Mercury.

High pitch squeal related to Firewire audio device after 10.6.2 audio patch

So the recent Mac Pro audio update 1.0 (applied on 10.6.2) has reduced my CPU temperature with audio playback (Presonus Firebox Firewire audio interface) and that is great. Also haven't had any machine crashes (grey screens) recently which is also great.
The problem is that when the Firebox is plugged into the firewire port of the Mac Pro there is a constant high pitched whistle of slightly oscillating frequency. If I unplug the Firebox the whistle goes away in a few seconds.
After prolonged use in a quiet room (the kind of room you need for audio recording / mixing work!) the noise is enough to drive me crazy.
I read a post on another forum with other people having the same problem. Can anyone comment here on seeing the same thing? Is there any known work around or fix for this?
When the CPU is under heavy load (e.g. H.264 compression etc.) the noise subsides only to return when there is normal load (i.e. half a dozen apps running).
Help!
Thanks

So I was able to back out the update using "Kext Helper b7" and the original IOPlatformPluginFamily.kext and AppleHDA.kext files from a backup before applying the update. It's pretty easy - just drop the two files onto Kext Helper, hit "go" and then reboot.
My ears are no longer in constant pain and I can actually use the Mac Pro again albeit running quite hotter than before.
This is not a fix Apple. The problem looks unrelated to a specific device based on the posts in this thread. Please issue a usable fix for the Mac Pro Audio performance issue.

High pitched sound - something to do with internal microphone ??

Suddenly my Powerbook has started emitting a high pitched sound through its speakers. You know one of those high frequency ear-blowing sounds when a PA system is being set up and the mic is getting tested and the amp's turned up too loud?
I'm not sure exactly what I was doing when it started, but I think I was making or receiving a telephony call via iChat. During or just after the connection process (which didn't work for some reason but that could've been a problem at the other end), this high pitched squeal started. I can get rid of it by turning down the output volume - the squeal disappears but that of course turns all other output sound down as well. The sound disappears when the volume is turned down about half way.
But...even if the sound is turned down half way, if I put my hand over the left speaker, the sound comes back. No sound comes back if I place hand over right speaker. I assume then that the inbuilt microphone is under the left speaker area, and this has something to do with the inbuilt mic.
The only other thing that's happened in recent times is that I used this Powerbook's audio line-in port to record some sound from an audio casette recently. I used Audio Recorder 2.0 for this. I can't imagine this has been the cause, but thought I'd better mention it. If I go into the Sound Preference panel, I can stop the squeal by changing the sound input device from internal microphone to Line In.
Anyone have a clue as to why this is happening and how iit can be fixed?
Many thanks, Steven

Hey, great suggestion Burn. It prompted me to look at iChat preferences, since that was the only application that I've had open which might engage the internal microphone.
Within iChat Preferences, I clicked on the 'Video' icon, and for the 'Microphone' setting I saw that 'None selected' (or something like that - that option has gone now?) was in place. So I changed the setting to Internal Microphone. The whistle or screech was still there. Then I changed the setting to 'Line In'. No more screech!!
A good result, but is this the way it's supposed to be? Does having the setting as 'Line In' mean that I have to plug headphones in whenever I want to use iChat for internet telephony? Unless I manually change to Internal Microphone, but then I suffer screeching again?
Cheers, Steven

All-In-One IdeaCentre C440, high pitch sound

I have a problem with my Desktop PC All-In-One Lenovo IdeaCentre C440, machine type: 10104, configuration number: 57322047. I bought this computer last week ago and from the beginning is present a high pitch sound. The high pitch sound is more evident when I don't use the PC (on Windows desktop for example or when I navigate on the Internet). I noticed that this high pitch sound disappear if I play a game (I set the sound off to confirm this) and come back in desktop Windows mode. I noticed also that this high pitch sound is lower or disappear if I copy (transfer) large files on my home network from one computer to another.
Is a solution for this situation ? Thank you.

Yesterday I've been with my computer to a service nearby. The guy from there told me that he doesn't have what to do and that probably in time the sound will just become worst and worst.
Unfortunately lenovo it's a big dissapointment.

In logic pro 7 how do I stop low volume high pitched squeal

Im using logic pro 7 with moto hd896 firewire. music will play thru itunes but won't thru logic.a message error while trying to sync audio and midi.

I don't use Logic yet, but I will. Sounds like a clocking error. Have you tried clocking to one source, and then clocking to the other and comparing the results? Those high-pitched noises are probably digital noise like what I hear on my phone when my cellphone is on too, and my computer monitor is 3' away. Did someone call your computer by telephone while you worked? Is something on?
Otherwise, how many times have you copied your session and edited the copy? after compressing something? after dithering?
Also, when a USB interface is hooked up too, and I'm recording thru Channel 2, lets say, and I set the input to "stereo", I get noise like you're talking about from the other unused channel. Try checking your input selection.
ManyToons

IMac high pitch sound (4th iMac in a week). Any improvements?

Hello,
I know there is a lot of forum posts on the internet about this, as I've spent about two days reading them (primarily from my iPhone as my screen sound drives me up the wall).
As some people have experienced, this is a result of changing the brightness (0% and 100% are fine, anything in between emits a high pitched whine...some people believe this is a result of the capacitors vibrating at around 15-16Hz, which would make sense).
I have actually gone through four separate iMacs in a week to try to fix this problem (and two being upgrades over the model I had in hopes of a different production run). I have checked the serial number on all of them and they were all build between September and October, at various weeks between, mostly within a 4 week window.
I am beyond my wits with this issue and not sure what to do now. I have spent nearly 20 hours setting up four separate computers only to format them to take back in a chance I am lucky enough to get one that I can dim at night time without getting a ringing sound in my ear.
I was wondering if anyone else who has experienced this issue has come across a solution, or at least a replacement that has worked? I am debating to go for number five, but honestly, I am almost too tired of boxing and driving, boxing and drive (rinse and repeat). (I even tried three separate stores in hopes to get a different production week that didn't have this issue).
Looking forward to your responses, and any guidance. I love this machine and I wish it just stopped having these issues so I could do some work...
Setup(s):
First two:
21.5" iMac 3.06GHz Intel Core i3
4GB RAM
500GB HDD
ATI Radeon 4670
Next two:
21.5" iMac 3.2GHz Intel Core i3
4GB RAM
1TB HDD
ATI Radeon 5670
Thank you,
Adam

I started having this problem yesterday on my late 2009 iMac 27 inch after I changed my HDD.
It was perfectly fine before however after the swap however after a high pitch noise occurred when I increased the display brightness. So Just this morning I pulled my iMac apart again and unplugged the screen again and had a look at the connectors. all were fine except for the Vertical Sync ribbon
The 4 flat wires/ribbons that are exposed on the end are supposed to be glued to the thin piece of plastic that plugs into the socket on the circuit board. This circuit board is on the top left hand corner of the iMac as well which is where people say the sound is coming from.
I am not sure if this will solve all the problems out there but its worth a look.
Follow this link to the ifixit guide to see what I mean (Look at Step 5)
http://www.ifixit.com/Guide/iMac+Intel+27-Inch+EMC+2309+and+2374+Hard+Drive+Repl acement/1634

Macbook Pro and high-pitch sound, please help!

Hello,
     I have a Macbook Pro 13 inch that is almost brand new. I just got it 3 months ago for my birthday. About a month or two with my new computer I started hearing a high-pitch sound comming from the computer. The sound only lasts about 3-6 seconds and it goes of at random times. It might make the noise 5 times in one day but then it might go away for 3 days, totally random. The sound comes if the computer is sitting there or is being used. After about 3 months of this going off I deceided to bring it to the Apple store in New Haven, CT. Does anyone have the same problem?
     After bringing my computer in and telling them the problem, they tested in for about 30 minutes. Everything was fine. No fan problem or hardrive problem. I brought the computer back home and within 3 days the sound is back. I drove to the Apple store again told them my problem,again, and they did they same test with no results. Brought it back home, noise is still there. This time im starting to get angry, they arent offering any solution. I bring it back and they take it for about 48 hours and do a extensive check. Nothing was found. I bring it home again and the noise is still there. My father and I went to Apple pretty angry and told them that we appreciate the time they take but something really needs to be done. They have sent it out for 3-5 days and we are awating a phone call to see whats wrong.
     I am hoping that they find something or if they dont can they can replace my computer? I am not spending hours of my own time and gas money going back and forth to Apple for no reason..the Genius bar guys have been no help telling us basically that we are lying and that there is nothing wrong when clearly there is. What can I do? Has anyone had this same noise come from their computer? I really appreciat everyone that decideds to throw some input in. Thank you so much.
Notes:
I have the latest software
Macbook Pro 13'
No physical damage done
Alex Cartier

Make a recording of the sound so the next time you take it in you can let them hear it. It might be best to do a video of the unit so the sound is combined with pictures/video of the computer so they know the sound is coming from it.
IMHO the guys at the B-bars are just about useless for this type of thing. If it isn't a bad drive, HDD or DVD, and the system seems to run OK (actually even if it doesn't run OK but runs at all) they will say "Everything looks OK". Or if the thing is dead they can help. That help will be "You need a new HDD" "You need a new DVD drive" "You need a new Logic board" and that's about it.

X-Fi XtremeMusic - High Pitched No

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