Audio distortion/clipping

Hi
I have an i-touch 32GB, it is the latest version.
The problem is bass is distorted on certain bass songs when the EQ is on and bass booster is selected. I have tried different headphones, with different results. The apple headphones being the worse, but others still producing distortion. I can of course listen to music ok with the bass booster switched off, but obviously I would like this on. Will a complete reset do the trick or has anyone got any further ideas?
Many thanks.

Got it! How did I not see think of this before!
Tried a different format on the Sony HXR-NX5U, Dolby Stereo. And it works.
What I was using before as a LPCM (L for Linear, it's a lossless codec) Codec format which I gues premiere does not like.
Adobe Premiere would probable recognize PCM because it is Non Linear Quantized and older format and it explains why LPCM was distorting - becuase it's on a wider linear scale that exceeds what Premiere supports - it was still seing the PCM part of the code but not that it was Linear.
The audio nerd prevails.
*edit*
Huh, well I don't see PCM nor LPCM in supported audio formats.

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cizzler wrote:
One more question-- if I have interviews where the audio peaks above 12 and are also too low to hear in the same clip-- how can I mediate that? Is there an effect that normalizes both without going through with the pen tool and bringing up lows/bringing down highs?
Mmm...some clarity's required here. When you say 'peaks above 12' are you talking about peaks during playback above -12 dB on the Audition meter? If so, there's nothing wrong with that - that's pretty normal. When you say 'too low to hear in the same clip' are you talking about too low to hear it when it's being recorded, or too low to hear afterward when you play it back? If it's peaking at -12 dBFS, you should be able to hear it completely clearly.

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stringZ

Just looking at the waveform confirmed my initial reaction: Way, way
oversteered. Everything is clipped and your best approach is to
reshoot. That some players can handle this seriously mistreated audio
may be caused by audio limiters. They should, otherwise you would blow
up your speakers.
Well, you can say that and if this sample was a music maximized with compressors, it would distort too. Sony Digital-8 camcorder has an internal limiter, so only soft-peaking can occur, but no serious distortion. Media Players (eg. mplayer) don't have limiters unless you specify an external limiter filter. I've already told this isn't the clip you want me to re-shoot. This is a sample I created to show you the problem. I sent this to one of my friends who has Ulead MediaStudio Pro 7.0. It doesn't distort there either. Have you tried loading it to an audio editor like Audacity or Adobe Audition? You can see no hard-peaking or distortion if you zoom in the waveform.
Waveform at 00:00:00:21. No distortion, only high levels can be seen on this waveform.
Waveform after 00:00:00:21. Soft peaking in right (bottom) channel.
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1st, Iphone won't easily edit http://forums.adobe.com/thread/881246
-and http://forums.adobe.com/thread/1011411?tstart=0
-and a fix http://forums.adobe.com/thread/934466
2nd, What are you editing, and does your project match your video?
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30
For PC http://mediainfo.sourceforge.net/en or http://www.headbands.com/gspot/

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Hi
I had a similar issue on a HP 15 Notebook PC andh recent s/w updates and a manual cache clean for flash the issue has resolved.
While investigating I noted if I download a youtube clip this played normally, no issues with sound playback namely a "garbled/cracking/compressed distortion sound". This suggested the issue is not in fact with the hardware.
I noted forums on dells web site for similar issues and some high end laptops for other manufacturer's. I noted also firefox was not so impacted as IE using HTML verses Flash player and not all you tube clips displayed the issue. I saw the issue on some BBC news items but not on others from the BBC. I found streaming radio and music no issues issue only occured with Video content when streamed.
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My O/S Windows 8.1 64-bit
Activity:
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2. clear adobe flash player cache run the program "Flash Player" and from the popup "flash player setting manger" select advanced delete "browsing data and settings" i cleaered everything.
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Hello,
I am also suddenly experiencing sound distortion through my loud speaker during calls and loud speaker during playback of music. This is very strange as I have not even had my Nokia Lumia 1020 for a week and this has happened. Can someone please tell me how to get this repaird please????
BSausse wrote:
I'm getting a very light audio distortion in the earpiece during calls. It is not so distorted that I cannot hear the other person, but it is noticeable enough that everyone who uses my phone turns to me and asks "what's wrong with your phone?" It is really noticeable when I switch to my other phone right after using my Lumia and the other phone is crystal clear.
The distortion is hard to describe, but it sounds like amplifier clipping or a blown speaker - or an odd mix of a buzz and hiss during certain sounds made by the person I'm speaking with.
I have a Lumia 1020 that was purchased on July 27, so it is still under warranty. I'm changing carriers, so I cannot bring it to them for repair or exchange.
Should I try a hard reset or send it back to Nokia for repair? Or, any other suggestions?
Moderator's note: The oost is edited. Duplicate quote was removed.

Sporadic audio distortion on 24"iMac

Hi all,
Since buying my 24" iMac, I've had a problem while watching (for example) YouTube videos, whereby audio is fine through the internal speakers, but for about 1 second in every 30 the audio distorts and gets slightly louder, then it goes back to normal. I assumed it was maybe a browser (Safari4) or plug-in issue and could live with it.
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HI and Welcome to Apple Discussions...
Try the 10.6.2 combo update available here.
http://support.apple.com/kb/DL959
Then repair disk permissions.
Quit any open applications/programs. Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it's finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of "messages" in the permissions window, it's ok. That can be ignored. As long as you see, "Permissions Repair Complete" when it's finished... you're done. Quit Disk Utility and restart your Mac.
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Uninstall Flash
Reinstall Flash
Restart your Mac.
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How can I reinsert the deleted audio from clips in my sequence?

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I can tell you a work around to get you going in the meantime, just may be time consuming if you have a lot of clips in the timeline.
double click a clip missing audio
press the go to in point and copy the timecode to notepad
press the go to end point and copy timecode
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double click the original in project
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Troy

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.
Flash is a widely-known resource hog. It's one of the reasons that Steve Jobs has 'banished' Flash from iPhones and the new iPad, and uses H.264 format video.
Have you also noticed that the fan becomes loud when this is happening? Almost any time the fan starts running at high speed, it's because your processor is working hard and needs additional cooling.
If you look at Activity Monitor when the stuttering occurs, you probably have a combined CPU utilization of the top two or three processes running of more than 100%.
It's also quite possible that the Free memory 'green slice' of the of the System Memory pie chart is quite tiny.
Work-Arounds
1. Run fewer processes/programs. Close and Quit every application that doesn't need to be running while you're watching Flash.
2. Try another browser. Some are better than others at running Flash. I use Safari primarily, but Firefox, Google Chrome, and Opera are also available.
3. Add RAM memory, especially if you still have just 1Gb RAM memory installed. Upgrading to 2Gb or 4Gb (MacBook 2,1 actually only recognizes and utilizes up to 3Gb) will help somewhat. It doesn't cure the processor saturation, but it does give the programs running more 'breathing room' until it reaches the saturation point.
4. ClickToFlash gives you options for how Flash is handled. Free download here --> http://rentzsch.github.com/clicktoflash/
5. H.264 format videos may be less processor intensive.
6. Buy a new Mac with a faster processor and more RAM. Even a 2.26Ghz MacBook Pro does much better than the 2007 2.16, because it uses a low power microprocessor, has 2Gb RAM standard, has a more advanced video chipset, and an unibody aluminum case to help dissipate heat.

What can be causing inconsistent DVD video and audio distortions...

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As a test, I burned a DVD with just the video, and it does NOT play the same distortions on my DVD player. This obviously means the video distortion is related to the audio being there, but, I don’t know why, or how to begin fixing the problem.
Any help would be tremendously appreciated!

Oh yes, indeedy!
Go into the AC3 encode tabs and have a look around. If you never used A.Pack with older versions of DVDSP then none of this will look familiar, but essentially the tabs are exactly the same as the old A.Pack application.
You can set the desired bitrate - for stereo you don't need more than 192Kbps. You can set the dialog normailsation value (for now, type in -31 and press return) and you can set the compression type - just use 'none'.
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Once you have got the audio encoding sorted out and are using it on a disc, see if the distortion still happens.
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How can I separate audio and clips?

How can I separate audio and clips?

I guess you mean "audio and video clips".
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Piero

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I have a large iTunes (v7.2) library with over 110,000 tracks, which I run through the digital line out of a Mac Pro running OS X 10.4.10. For some reason, I'm suddenly getting serious audio distortion on many of the tracks. Some tracks play with distorted, crackling, others play extremly softly. Others play fine. What makes the problem strange is that it occurs with different tracks encoded in different ways: MP3, unprotected AAC, protected AAC, and Apple lossless tracks are all affected. There doesn't seem to be any rhyme or reason to which tracks are affected. Furthermore, I've verified that it's not the tracks themselves...if I run the same tracks through iTunes on another computer (via library sharing), they play fine. Finally, I've turned off Sond Check, Sound Enhancer, and the Equalizer, but the problem persists.
It's very frustrating! If anyone can please help me, I will be extremely grateful. Thanks so much!
Mac Pro Mac OS X (10.4.10) iTunes 7.2
PowerBook G5 Mac OS X (10.4.2)
PowerBook G5 Mac OS X (10.4.2)
PowerBook G5 Mac OS X (10.4.2)
PowerBook G5 Mac OS X (10.4.2)
PowerBook G5 Mac OS X (10.4.2)

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Relinking Deleted Audio to Clips

Is there a way to relink deleted audio from clips that were unlinked from their audio tracks that were then deleted? so basically, if I have a clip, cut it and edit it, unlink the video and audio, delete the audio, and then later want to have the audio again. One way would be to drag in the clip, align it with the old clip, copy all edits and delete the old clip, but I have a lot of clips. I thought one option would be to open the .prproj file in a text editor and change it there, as this has saved me hours of work on other applications. Can't find any info though on the file structure, and I could spend the better part of 2 weeks hunting this one down. If anyone has a fix, I would very much appreciate it. And Alt-dragging the source clip from the bin onto the old clip does not bring in the audio.
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There's no 'easy' way to do this. That's why it's best to never delete the audio from clips. Mute the track if you have to, but leave the clip in tact.

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iM08 didn't have that feature.
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