128 bit rate AAC?

Is this the normal audio quality (128 bit rate AAC)for purchased music from iTunes store? I thought it was higher than this...? Thanks in advance for the info.

I hear apple is going to start delivering tracks in a higher bit rate. 128 is ok, but it is not good enough for critical listening.

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Uncompressing 128 bit rate

Is it possible to uncompress 128 bit rate to something like 160 or higher? I see the option of switching imported songs to higher quality under preferences. when I switch then convert the song in iTunes I see a change in the memory of the song, but is it really changing the quality of sound. If this works then what is the point of DRM free music having 256 quality if you can upconvert, if this is possible.

if you are throwing out the cd and want to keep your songs close to cd quality.
Don't throw out your CDs! They are the best quality version of the song, and they are not subject to loss in hard drive crashes. If you are really tight on storage space, toss the plastic jewel cases and save only the discs.
by the way what is cd rate?
Technically it is 1411 kb/s, although because of the different coding scheme, that number can't really be compared to the bit rate of a compressed format like AAC or mp3. It would be "reasonably accurate" to think of CD quality as equal to a compressed format at 320.
Windows XP & 30GB iPod

320 & 128 bit rate in iPhone.

I haven't found an option that lets you choose the bit rate you want to convert your music to in my iPhone. All my music is 320 bit rate or lossless... So it's going to take a chunk of space. I'm converting the music I want on my iPhone to a 128 bit rate and throwing that in a playlist to sync to my phone... which I really don't want to do because now I have the same albums twice and it's makes my library messy. Any quick fix or solutions?

I can't speak for iPods cause I never bought one. I've always been the kind of person who rather have one device (Moto Razr V3i w/ iTunes) then two devices (reg. phone and an iPod). My phone would covert the music to 128 bit rate to optimize space. It would make sense that apple would give us an option to convert the size of our music files to optimize space as well. This making duplicate albums in two different bit rates is a hassle! Unless you've gone into Edit > Preferences > Advanced > Importing... the music you rip on your computer is going to be a defult ACC 128 bit rate format. Which there is nothing wrong with. If you share music with friends and they don't have iTunes there's going to be an issue. So I changed my encoder to MP3 and also adjusted the audio quality. You tend to lose lower frequencies when music is ripped at a low bit rate.

Bit Rate AAC Issues

I have been having some issues / confusion : First off I'm not sure if my settings are set right or not. I am importing with the AAC Encoder set to custom.
Stereo Bit Rate : 192 kbps
Sample Rate : Auto
Channels : Auto
Check Mark in : Use VBR
Now is this a good setting? I want @ least cd quality in an AAC format.
Issue: Not just my Imported cd tracks but the tracks purchaced from the itunes store all seem to play @ a Quiet Volume having to crank up both the Machines Volume and iTunes to almost max, plus with the EQ Preamp put to +10dB. It could just be the headphones, they are old.
Any tips or help on settings would be great. Thanks!

You're welcome. I use the default import settings of AAC 128 Kbps. This works well for me, but each person is a little bit different. For example you like 192 better.
I also use Apple Lossless for the live music I download, but when I want to take that music on my iPod I transcode it to 128 AAc.

Sync at Higher than 128 bit rate to iphone?

Does anyone know why apple does not give an option to sync songs at a bit rate other than 128 kbps (or the bit rate in itunes)? Some of us would buy iphones with more memory if we could sync at 256.

sguerra wrote:
Chris,
Thanks for the reply. What would happen if I burn an album from 128 to wav file so i could listen to it on any cd player, then imported it back as 256? Still no quality change? This is why I ask, I accedentally deleted my whole library, fortunetly I had most of it backed up on DVDs. I thought this could be a good opportunity for me to evolve to 256.
Is the concept, if I bought an album from itunes at 128, that is best quality it will ever be? The same album bought at "sears", imported at 256 would be better quality? That makes sense.
Thats exact thing that will happen. Lossy formats (like MP3 or AAC) cannot be improved in any way from their current encoding rate. You already lost the information long ago and you cannot get it back no matter what you do with it.

Convert to 128 bit rate doesn't want to "go"

sometimes, a few hundred songs will make it but then i will get an error i can get around it by not syncing that album but if it has converted 75 songs how do i keep them in my iphone when i stop the synC?

I am experiencing the same issue. Most of my music is in Apple Lossless Format but to try and fit it onto my 80GB iPod I set Convert higher bit rate songs to 128 kbps AAC and start syncing, but usually only a few songs get copied before I get the following errors:
Attempting to copy to the disk "iPod" failed. The disk could not be read from or written to.
iTunes could not copy "Song name" to the iPod "iPod" because the file could not be read or written.
It appears to happen on the same files, but the files seem to be be fine as I can play them in iTunes. Also if I switch off the conversion setting, the files sync without issue.
I have tried restoring the iPod several times, tried different lists of music, but this keeps on happening.

How can edit the Bit Rate on my music?

I have downloaded some lectures that are below 128 Bit Rate, so they are not being uploaded onto iTunes Match.
I was told to change the Bit Rate to 128, and that would solve the problem.
How do I do that????

Thank you Airsculpture- I have gone into the menu bar on iTunes, but I can'rt seem to find the location where to choose or select a highter Biz Rate. Can you give me a little more guidance please?
Limnos- I understand it will not improve the quality. I just need to increase the Biz Rate so it is accepted on iTunes Match. Any Biz rate lower than 128, will not be accepted.

Won't import at 320 bit rate?

HI
I'm running the latest ITunes software on windows xp home and want to import audio cd's at 320 bit rate. I select this option in the custom settings and it appears to stick, but when I check the song's after importing has finished they have imported at 128 bit rate.
I've tried deleting the 2 itunes.pref files as stated else where but no luck..
Can somme one pleeease help me?

Hi Guys
Thanks for the info, I gave it a go and changed the screen resolution and the weird thing is that I could already see the apply buttton on the original screen resolution BUT when I changed the resolution it worked!!
I don't see the logic in how window's screen resolution effects the importing bit rate of Itunes?
I suppose that's what you get when yoou throw apples at windows, Broken glass!
Thanks for the help

Does improving bit rate improve quality when importing from a lossy file?

Okay, if that question made no sense, here's an example:
I have a 5 Megabyte file encoded as an MP3 at 192 kbps.
I like to keep all my files in one format though, and currently my preferred format is AAC.
Would it make sense to convert it to 320 kbps AAC?
I get the feeling that since the data for that bitrate is gone (since MP3 is lossy)
it wouldn't make any sense trying to improve the bitrate. All I would get is a large file
that sounds the same as 192 kbps AAC.
Is that right?

Yes and No.
You are right that converting to 320kpbs AAC will not increase the quality since the data is already gone.
However for the next but you are slightly wrong.
What you will get is a large file that sounds the same as 192kbps MP3, which is not as good as 192kbps AAC (AAC is better quality than MP3 at the same bitrate).
Also, there is always a loss in quality when going from one lossy format to another.
If it's possible to go and re-encode the original source material at a higher bit-rate AAC I would definately do that, but if all you have is the 192kpbs MP3, then just leave them as they are and don't worry about having different formats.

Using the "Convert higher bit rate songs to 128 kbps AAC" feature...

I recently discovered the "Convert higher bit rate songs to 128 kbps AAC" feature and used it to copy my entire 70 GB music library to my 64GB iPad. The music library now occupies only 45 GB. Awesome!!!
Unfortunately, the whole process took well over 24++ hours on my quad core Windows 7 computer (takes about 6 seconds per track). Questions:
1. Is it possible to speed up the process? Even though I am using iTunes 64-bit version, it seems that at no point is more than a single core being used at 33%. Seems to me like overall 8% of the CPU (33% / 4) capacity is being used for the conversion and 92% is being left idle. Is this just bad programming or is there anything I can do to speed up the process? Others see similar problems?
2. Now I have already started dreading the day, I need to restore my iPad (e.g., when OS version 4 becomes available). I would hate to have to do this process all over again. Should I need to restore my iPad, is there anyway I can force iTunes to back up the 128-bit AAC versions on my computer and restore it up from there?
Any insights into both these questions will be deeply appreciated.
Cheers,

ed2345 wrote:
malus_domestica wrote:
Thanks for the response.
So, I am wondering why iTunes uses only 8% of the processor power in converting the songs.
Possible reasons not to grab more of the CPU power (1) maybe the process is I/O bound due to all the writing, and is not processor limited? (2) since conversion is almost always a background program, and the user will typically have other things going on, maybe it intentionally limits CPU use?
I ran a few quick experiments (out of curiosity) and think the answer is #2. No apparent technical reason but potentially a limitation introduced by Apple's engineers to maintain a good user experience (for some people at least). I fired up 4 instances of dbpoweramp and ran multiple conversions and found that the process goes faster than what iTunes can do by an order of magnitude. With luck, someday Apple will have an option for users to select how much of processor bandwidth to be allocated for the conversion.

How do you convert a higher bit rate music to 128 kbps AAC?

How do convert a higher bit rate music to 128 kbps AAC?

Select "Convert higher bitrate songs to 128 kbps AAC" - http://forums.macrumors.com/showthread.php?t=303772 - discussion from 2007

Conversione brani con bit rate più alto ad AAC a 128 kbps

Buon giorno! facendo la sincronizzazione del mio iPod touch con iTunes, ho scelto di convertire i brani della mia libreria con bit rate più alto ad AAC a 128 kbps. Risultato: molte musiche risultano disturbate da un rumore-fruscio di sottofondo, che le rende inascoltabili. Oltre a convertire i file sull'iPod, mi ha convertito anche i file nella libreria iTunes. Posso tornare ai file originali e come? Nota: non ho fatto back-up dei brani musicali prima della conversione e quindi di alcune musiche acquistate da su iTunes store non ho l'originale;-( Grazie

My iPod Nano 6th Gen, Crashes whilst performing "Convert Higher Bit Rate to 128 AAC" in iTunes.

Hi Guys,
I have a 6 week old iPod Nano 16Gb.
I have about 2500 songs, which would be coming up to 18Gb, so instead of selecting which albums I want, I've taken the lazy approach and ticked the "Convert higher bit rate songs to 128 AAC".
As you all know, it does the coversion on the fly, roughly about 8 sec on average per song. Being a slow Core Duo T2500, it takes its time and I have to leave it over night whilst it does it.
Come back in the morning and the watch had the 'White Screen of Death', displaying on the screen like the Apple IIe days of "OK to disconnect"
Then it goes blank and then it says iTunes (picture of a plug), under that, connect to restore.
Plug it into iTunes and it does a full restore with nothing in it.
I hope I explained it ok.
Im kinda think its not the Nano, as I've filled it up with music and photos to its capacity and works fine.
Would it be something to do with "Enable disk use", to stop it from connecting and disconnecting after syncing?
Any ideas?
Thanks Guys.

I have the same problem and can't seem to figure out what the problem is. I rebuilt my iTunes library and still my 6G nano crahes whenever I load an AAC tune onto it. MP3s and podcasts all work fine, it's just the AACs...
Just *loading* an AAC song will cause the Nano 6G to reboot as soon as it disconnects from Itunes. It will then reboot a few times and then go into recovery mode. :-(
Karen

HT1535 How do i convert higher bit rate songs to 128 kbps AAC

I am trying to sync selected songs to my Iphone 5 from my itunes library. I have recently taken my computer to be fixed and all of my music documents were taken off but the files were replaced shorty after. I re-downloaded itunes and it is up to date. My iphone is also on the ios 7.0.4. Whenever i plug my phone in to be synced it never goes past the "waiting for changes to be applied" step. While my phone was still connected i went to the "On this iphone" tab and clicked the autofill button and a message came up that said i must convert higher bit rate songs to 128 kbps ACC to allow the songs to be copied to my iphone. How do i do this? Also, once this is done will it solve my problem with transfeering my songs from my library to my iphone?

Sid,
With the device connected, click the Summary tab and you will see the "Convert higher bit rate..." option. Set it to 128. See picture below:

I am tying to add music from a disk i imported but it says "convert higher bit rate songs to 128 kbps AAC"? How do i do this?

How do i convert the bit rate to 128 kbps? Having difficulty figuring that out

Add to what? An iOS device (of which you make no mention)?
https://discussions.apple.com/message/18341150 (picture for iPad)

128 bit rate AAC?

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