Left channel audio malfunction

My left audio channel in my headphone jack cut out yesterday, I'm plugged into speakers and I get nothing but a high pitched whine out of the left channel. It seems to make different noises based on what the computer's doing internally too (drive spinning, even searching in spotlight).
I've plugged in and out multiple times, I've restarted a few times, I tried opening garageband (heard that was a fix once..), I messed around with the sound preferences and the audio and midi setup.
I'm pretty stumped and this sound is very annoying, any ideas are appreciated.
Thanks,
Ben
PS- anyone know why my computer won't shut down/restart? It just goes to gray screen and I have to manual shutdown...
2011 MacMini
2.7 GHz Intel Core i7
16 GB 1333 MHz DDR3
AMD Radeon HD 6630M 256 MB
OS X 10.9.2

Try resetting the NVRAM and SMC
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM

Similar Messages

Imported DV plays only left channel audio

In working with iMovie HD 6, I've imported video from my DV camera and I'm only getting sound from the left channel (I used a lapel mic plugged into the camera while I was recording). Is there a way to mix the left channel audio into stereo, or at least two channel mono so that my movie and subsequent DVD project will play sound in both channels? I'd prefer to run the fix within iMovie, but will consider exporting if necessary. I can't recreate the original interview without a lot of work.

Welcome to iMovie Discussions.
Yep, you can do it in GarageBand, just setting it to move the mono channel into both channels.
Or you could use the free, downloadable "Audacity", and just select the left channel, then copy it, and paste it into the empty right channel, like this.
However, to use the wonderful "Audacity", you've got to find your original audio in iMovie, then remove it from within its hidden storage, whereas GarageBand just "knows" where to find the audio if you send your movie there, so click on Share and then GarageBand, where you can select the Movie Sound track, and just turn the little 'panning' control, in the Mixer column, to the centre.

Left channel audio interference (WinXP)

Hi,
I am running windows XP in bootcamp on MBP 2.3Ghz core2duo.
The left channel audio has a constantly crackling when playing. If I plug in headphones the problem is transferred to theleft channel in the headphones so it isnt the speaker. The problem does not exist in OSX, and strangely can be intermittently fixed by restarting windows. However this is hit and miss and annoying!
Is this a driver issue?
I've tried some other suggestions such as disabling wireless and killing the bootcamp process but no luck...
Thoughts appreciated!
JT

Try resetting the NVRAM and SMC
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM

How can left channel audio be put on right side?

how can left channel audio be put on right side? or made into mono track as a work around?

The Loop browser and the track have a fixed size. You can only hide the Loop Browser by pressing the Loops button in the footer to make the time line longer.
Or drag the resize corners to enlarge the GarageBand application window. Have you set your display to the maximum possible resolution in the for your screen in the System preferences > Display?
If you have only a small 13" screen, try to resize the GB WIndow beyond the bounds of the screen by pushing the trackheads beyond the left border and dragging the right resize corner.
-- Léonie

Left Channel Audio - Losing It

Hey everyone -
I just finished a video for my office in iMovie HD - when I was producing the piece through outboard speaker the audio was fine (left channel only) now that I'm checking through my internal speakers (iMac) I am losing the left channel all together.
The video was recorded on a Canon XH A1 with a mic in the left XLR input only, how can I export to Quicktime without losing that left channel - it is there but very faint.
I do have Logic Studio - would that help?
Thanks to all!

Try resetting the NVRAM and SMC
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM

IPhone - left channel audio only (speakers & headphones)

I own an iPhone 3G. Audio only comes from the left channel in iTunes, apps etc. This is true whether there are headphones connected or not, which seems to suggest it's not simply a poor connection in the stereo jack.
From what I read there's no software balance control but I wonder if this issue is common or resolvable. I'd love to fix this!
Any suggestions? What can I do to fix it?
Thanks in advance!

The iPhone includes a single external speaker, but you should hear sound out of both earbuds when listening to music with headphones.
If the same occurs with more than one set of earbuds or headphones, your iPhone probably has a hardware problem if the standard troubleshooting steps do not resolve this which in order are powering your iPhone off and on, an iPhone reset, restoring your iPhone with iTunes from your iPhone's backup, and restoring your iPhone with iTunes as a new iPhone or not from your iPhone's backup.
If no change after these troubleshooting steps and the same occurs with more than one set of earbuds or headphones, you can call AppleCare or make an appointment at an Apple store if there is one nearby.

Converting left channel audio into stereo file

I'm using an edirol ua 25 which has two inputs, 1 which is a left channel and 2 a right channel. As i'm using the first input, the recorded audio pans hard left, how do I go about converting the recorded audio into a central stereo file?

Why do you want to change it to stereo? It isn't a stereo (two-channel) recording, it's a mono, single-channel recording.
Mono is not somehow "worse" than stereo, don't feel that need that everything should be recorded to two channels, it's a waste of resources.
You can pan it anywhere in the stereo field - with the pan knob central, the mono track will be centered in the stereo field. You can pan it left or right accordingly.

Audio Left Channel is absent in app-specific instance

Hi, All:
I was just advised that this topic belongs here in the MSDN forums, so moved the topic from the Community. I am not sure that this particular forum is the correct one. If not, please advise where to put this question.
Here is my original question:
I have created an application (in Delphi) which uses audio output, but recently discovered that the left channel is missing. There is nothing in my program that would do this.
To further test this application, I did the following:
1. Used the Windows PlaySound command to output a simple WAV file. I moved this line to the top most part of the program before anything else was created or intialized.
2. This wav plays immediately on launching the program, but as with the rest of the program (which using SAPI, text2speech), the left audio channel is absent.
3. If I move the program (profviewer.exe) to another location than where the application is installed, the left channel returns.
4. If I change the name of the program to e.g. "test.exe" the left channel returns.
5. On my Win7 systems, if I changed the name from "profviewer.exe" to "test.exe" then ran the application to the initial password dialog then cancelled, then rechanged the name from "test.exe" back to "profviewer.exe"
I discovered that this audio channel anomaly was corrected.
6. On my Win8.1 system, changing the name of the app as in #5 did not fix the audio channel problem.
My guess is that there is some application specific registry setting that controls this. Could you tell me where to look for this so I can fix those systems with Win8.1? Or failing that is there some other work around that I could apply to get the
left channel audio back?
Thank you,
Chuck Belanger

Hi, Matthew:
Here is the output of Meters.exe from a user with Win8.1 and who has no left audio channel in the program (Profviewer.exe). Hope this helps to fix this head scratching issue.
Chuck
-- Playback devices --
Realtek Digital Output (Realtek High Definition Audio)
Peak: 0
Mute: 0
Volume range: 0% to 100% (-96 dB to 0 dB in steps of 1.5 dB)
Master: 100% (0 dB)
Channel 1 of 2: 100% (0 dB)
Channel 2 of 2: 100% (0 dB)
Speakers (Realtek High Definition Audio)
Peak: 0.89008
Mute: 0
Volume range: 0% to 100% (-65.25 dB to 0 dB in steps of 0.03125 dB)
Master: 100% (0 dB)
Channel 1 of 2: 100% (0 dB)
Channel 2 of 2: 100% (0 dB)
Active session #1
Peak value: 0.35822
Icon path:
Display name:
Grouping parameter: {e82cafd7-7990-453b-945d-3ab7524368ea}
Process ID: 17284 (single-process)
Session identifier: {0.0.0.00000000}.{6b1b2275-77cc-4056-ad76-4c9fcc30e373}|\Device\HarddiskVolume5\Program Files (x86)\NMT\NMT Treeview Version 3.0\NMT Treeview Professional\ProfViewer.exe%b{00000000-0000-0000-0000-000000000000}
Session instance identifier: {0.0.0.00000000}.{6b1b2275-77cc-4056-ad76-4c9fcc30e373}|\Device\HarddiskVolume5\Program Files (x86)\NMT\NMT Treeview Version 3.0\NMT Treeview Professional\ProfViewer.exe%b{00000000-0000-0000-0000-000000000000}|1%b17284
System sounds session: no
HWND: 0x000E2560 Scan Text
HWND: 0x000D02A4 NMT TreeView - Professional Version->Client: test 1 test 1| Session: 2/14/2015 8:38:27 AM| Mode: CLIENTS
HWND: 0x001E111A
Master volume: 1 (0 dB FS)
Not muted
Channel #1 volume: 0 (-1.#INF dB FS)
Channel #2 volume: 1 (0 dB FS)
Audials Sound Capturing (Audials Sound Capturing)
Peak: 0
Mute: 0
Volume range: 0% to 100% (-96 dB to 0 dB in steps of 1.5 dB)
Master: 100% (0 dB)
Channel 1 of 2: 100% (0 dB)
Channel 2 of 2: 100% (0 dB)
-- Recording devices --
Microphone (Realtek High Definition Audio)
Peak: 0
Mute: 0
Volume range: 0% to 100% (-17.25 dB to 30 dB in steps of 0.03125 dB)
Master: 100% (30 dB)
Channel 1 of 2: 100% (30 dB)
Channel 2 of 2: 100% (30 dB)

Soundcheck lowers audio in left channel.

So if you have soundcheck on it lowers the audio in the left channel in most tunes. I don't know why it would do this, you'd think it would be a bit more even of a distribution but it's heavy on the left channel. The only reason I have soundcheck on is I have various mp3s from widely different sources, and it can be annoying to be suddenly blast by a particually loud tune, and then barely hear the next one.
Soundcheck is too lopsided for me to use. Any solution besides soundcheck? Would MP3 Rage do the trick?

You can Reset the iPod, by pressing Menu and Center button simutaneously for about 10 secs till the Apple logo comes ON, then release it.
If this doesn't work, then the left channel audio electronics is leaking, which mean bringing it in to Apple Genius Bar or a 3rd party service center, if it is out of warranty.

Audio output from left channel only

My iPhone 5s (iOS 8.1.1) suddenly developed a problem with audio output last week after about 9 months of ownership. Through the headphone socket and Bluetooth streaming, only the left channel could be heard. I arranged an appointment at the Apple store and they confirmed after they carried out a restore (iOS 8.1.1) that there was only audio from the left channel. The phone was replaced under warranty.
My new phone was partially set-up in store and all I had to do was load my backup when I got home. I loaded the backup from my Mac and tested the audio output. To my surprise, the new phone had exactly the same problem as the one that was diagnosed as faulty in the Apple store i.e., audio output on the left channel only. I contacted Apple support via chat and explained the issue. I was advised to test the new phone without my backup being loaded. I restored the phone and tested the output using both Bluetooth and the headphone socket and there was a stereo output as normal. I reloaded my backup and it returned to left channel audio only. I was advised to then reset the phone and this cleared the problem. Corrupt backup data??
What I can’t understand is that two phones exhibit an identical problem, with one being a hardware issue and the other apparently a software issue. Too much of a coincidence if you ask me.
Is it possible that an app could cause a problem leading to a hardware failure?

Submit bugs to http://www.adobe.com/go/wish . More on how to give feedback: http://bit.ly/93d6NF

MOVED: K8N No Sound From Left Channel

This topic has been moved to AMD64 nVidia Based board.
https://forum-en.msi.com/index.php?topic=115851.0

Can someone with more knowledge tell me if these two tables are telling me that my Antec P180 case front audio panel connector is working to a different standard to the K8N mobo? I have it connected with the Intel AC'97 connector. Thanks!
At this point I would add the image if I could work out how to do it! So here is the text version;
From K8N Manual
PIN SIGNAL DESCRIPTION
1 AUD_MIC Front panel microphone input signal
2 AUD_GND Ground used by analog audio circuits
3 AUD_MIC_BIAS Microphone power
4 AUD_VCC Filtered +5V used by analog audio circuits
5 AUD_FPOUT_R Right channel audio signal to front panel
6 AUD_RET_R Right channel audio signal return from front panel
7 HP_ON Reserved for future use to control headphone amplifier
8 KEY No pin
9 AUD_FPOUT_L Left channel audio signal to front panel
10 AUD_RET_L Left channel audio signal return from front panel
From Antec P180 Manual
Pin Pin Assignment
(AC’97 AUDIO)
1 MIC In
2 GND
3 MIC Power
4 NC
5 Line Out (R)
6 Line Out (R)
7 NC
8 Key (no pin)
9 Line Out (L)
10 Line Out (L)
Pin Pin Assignment
(HD AUDIO)
1 MIC2 L
2 AGND
3 MIC2 R
4 AVCC
5 FRO-R
6 MIC2_JD
7 F_IO_SEN
8 Key (no pin)
9 FRO-L
10 LINE2_JD

Only left channel records - help please

Here's my set up. I have DVR with a bunch of movies. I am taking S video out and RCA audio out to a Sony DCR TRV 120 camcorder. This camera can act as a DV bridge. I am going out from the Sony via FW into my PB and trying to capture the movie in iMovie 5.0.2.
Everything is working except that I am only getting audio from the left speaker on the computer. I checked the computer in iTunes and sound comes from both speakers. I checked the camera with headphones and there is sound coming into the camera in stereo.
So, it must either be that I am losing the right channel via FW or the DV bridge in the camera.
I have imported many movies from Hi8 tape without a problem. Is there anything I am missing here? Should try to go from the camera's headphone out to the audio in on the PB? Could it be a faulty FW cable?
Is this a problem with iMoive 5.x? I have read this forum all night long and not found anyone else with the problem.
I appreciate all replies.
PB 15" 1.25 G4 Mac OS X (10.4.8) Intel iMac 2.0

"..I checked the computer in iTunes and sound comes from both speakers.."
So the computer's audio is OK.
"..I checked the camera with headphones and there is sound coming into the camera in stereo.."
No: probably not real stereo; it may be the same mono audio coming out of both channels (left & right), giving you the same mono audio in both sides of the headphones. The camcorder may be trying to 'do you a favour' ..and, because it's receiving only mono, it's helpfully(?) playing the one incoming channel out of both headset channels.
"..So, it must either be that I am losing the right channel via FW or the DV bridge in the camera.."
No: FireWire is just a digital link which carries exactly what it's being fed - you can't lose a right channel via FireWire: it passes on exactly what it receives ..like handing on a cake to someone: the person who receives it from you wouldn't receive it with half the raisins or the self-raising flour or the egg missing ..it's all handed on complete.
"..the DV bridge in the camera.." Well, as I said; I think you'll find that the camera is receiving only through its left channel, but is providing that left-channel audio out of both sides (..left & right..) of your 'phones.
So the problem is probably at the very source: your "..DVR with a bunch of movies". Either the movies are recorded in mono, and that's leaving your DVR through only the left channel, or - even if the movies really are stereo - only the left-channel is active (..is connected properly, or has sound going through it..) from your DVR to the Sony camcorder.
One way to fix this is to take the output from the left-channel of the DVR, and feed that to both the L & R cables which go to your camcorder. Use a 'splitter/joiner' like this..
..so you'd connect the left audio channel out of the DVR (..should be a white RCA/phono plug..) to the single pin of this adaptor, and then connect the pair of RCA/phono sockets on the back of the adaptor to both the left and the right audio inputs of the camcorder ..you may be using a 3.5mm jack plug to connect the phono plugs into the camcorder's input.
This kind of little mono to both channels adaptor is available by mail order from most electronics stores, e.g: here, and the simplest place to find one in the States is probably Radio Shack, or that kind of store.
It's a common problem..

Premiere Elements 13 (not Pro), recorded a video with mono mic input (left channel only), need to create 2-channel (left and right) audio track for finished product. Help?

The question says it all. I have been all over the tutorials as well as the menus inside Premiere 13 and cannot find how to edit the audio track beyond basic balance, volume, etc.
I can see the Audio 1 track, shows audio in left channel only, but it will not respond to attempts to select, cut/copy, paste, etc.
Basically I just want to turn one-channel audio into two-channel audio.

25424...
Sure you do not want to give the Fill Left and Fill Right another try?
According to the Adobe document Adobe Premiere Elements Help | Effects reference
Fill Left, Fill Right
The Fill Left effect duplicates the left channel information of the audio clip and places it in the right channel, discarding the original clip’s right channel information. The Fill Right effect duplicates the right channel information and places it in the left channel, discarding the existing left channel information. For example, you might use this effect on footage shot with a monaural microphone plugged into only one channel of a camcorder, extending the voice of a speaker from one channel to both.
From what you wrote, your Premiere Pro video seems to be saying the same.
If that Premiere Elements Fill Left or Fill Right is no go, you might want to explore what you can do in this regard using the free audio editor Audacity.
Audacity: Free Audio Editor and Recorder
And, then import the Audacity edited audio back into Premiere Elements project as source media.
Is the speaker system OK?
We will be watching for your results.
Thanks for the follow up.
ATR

Audio Input on the Left Channel is fine, Right Channel, Not So Much...

Okay, so I'm attempting to record some audio into my eMac using it's 3.5mm Line Input Jack, but Sound Studio is telling me that all of the audio is coming out of the left channel.
I checked balance, it's a new cable that works fine otherwise, the device I'm recording from sounds fine on headphones.
Any suggestions?
Message was edited by: Milton Allemand

Hmm. I think someone more technically-inclined with audio could help you out here. I tried recording audio on my eMac with QuickTime Player (I'm not sure if you need QuickTime Pro to do this, otherwise I would suggest you try the same thing). I have a similar experience as you. The QuickTime A/V window (control-K) informs me that the audio balance is shifted completely to the right channel (rather than left, as you observe in Sound Studio). And there is no way to adjust this, it is also "greyed out". This QuickTime recording is through the built-in microphone on my eMac. Might there exist (pricier) external microphones that are specifically capable of stereo recording? Or perhaps our eMacs aren't capable of stereo recording, at least without hardware modifications. I don't know. Clearly, I'm ignorant about this. Perhaps there is a Discussion going on somewhere else around here that is more Audio-specific?

If I change audio levels in AE CS6 from 0db, it decides to output left channel only.

This is a bug that's been prevalent in every iteration of AE CS6. I'm updated to the most recent version. This is also something I've seen around a lot of forums, but nobody has an answer.
If I change the audio levels on any audio track from the default 0db, the RAM preview only plays back the left channel which completely breaks the way I can properly work.
If I render it out, the audio is fine... it's clearly only on RAM previews. But rendering out things to check audio levels is not a solution.
Any idea why this happens?
Using Windows 7 Pro
AE CS6 (on Creative Cloud)
MSI Motherboard with onboard RealTek sound.

Submit bugs to http://www.adobe.com/go/wish . More on how to give feedback: http://bit.ly/93d6NF

Left channel audio malfunction

Similar Messages

Maybe you are looking for