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Thread: Work around for poor Pandora audio quality

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    kkozma's Avatar
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    Work around for poor Pandora audio quality

    I finally got to the root cause of poor audio quality in Froyo when streaming Pandora over 3G. There is an AAC hardware acceleration library that is misbehaving.

    This isn't really a fix as much as it is a workaround and it can be done through terminal emulator provided you have root access or you can use root explorer. I only have an OG Droid, so I don't know if this will work for other phones or not.

    The library in question is libOMX.TI.AAC.decode.so and it is located in system/lib. Simply rename the file and that should do it. I renamed mine libOMX.TI.AAC.decode.bak.

    Since I don't have root explorer, I used the terminal emulator included with CM6.1

    1. Set your system partition to read write
    mount -o remount,rw -t yaffs2 /dev/block/ mtdblock3 /system
    or
    some roms have scripts for this and in my experience it's always been sysrw

    2. cd system/lib

    3. mv libOMX.TI.AAC.decode.so libOMX.TI.AAC.decode.bak

    4. set your system partition back to read only
    mount -o remount,ro -t yaffs2 /dev/block/ mtdblock3 /system
    or
    some roms have scripts for this and in my experience it's always been sysro

    The only negative side effect I've run accross with this is I lost about 200 points on my quadrant score. I'll gladly take perfect audio quality over some number on a benchmark.

    Let me know if this works for everyone!
  2. Beta Team
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    #2
    the newest update to froyo should also fix this
  3. Droid
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    Quote Originally Posted by circsmonky View Post
    the newest update to froyo should also fix this
    Frg83d? It didn't for me. Exactly every other song sounded like garbage.
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    iv never had anything go wrong with mine. but ill pass it along to friends who have claimed it and see how it goes.
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    Angry

    Quote Originally Posted by circsmonky View Post
    the newest update to froyo should also fix this
    Sadly the new pandora update i got yesterday with my market update and the new 2.2.1 patch to my droid x have not fixed ANY audio issues. The best work around i have found is to use my iPod Touch adhoc-ed to my phone to get my paid for high quality tunes.
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    kkozma's Avatar
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    Quote Originally Posted by haasta View Post
    Quote Originally Posted by circsmonky View Post
    the newest update to froyo should also fix this
    Sadly the new pandora update i got yesterday with my market update and the new 2.2.1 patch to my droid x have not fixed ANY audio issues. The best work around i have found is to use my iPod Touch adhoc-ed to my phone to get my paid for high quality tunes.
    I was doing the same thing. Does the X use a TI processor? If so, then it's likely you have the same problem I did. All the finger pointing back and forth between Pandora and Google and the root of the problem is neither of their fault.

    If you're rooted, give what I did a shot and see if it helps. If all you do is rename the file, you can easily revert back to it if it doesn't.
  7. Junior Droid
    haasta's Avatar
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    Talking

    Quote Originally Posted by kkozma View Post
    Quote Originally Posted by haasta View Post
    Quote Originally Posted by circsmonky View Post
    the newest update to froyo should also fix this
    Sadly the new pandora update i got yesterday with my market update and the new 2.2.1 patch to my droid x have not fixed ANY audio issues. The best work around i have found is to use my iPod Touch adhoc-ed to my phone to get my paid for high quality tunes.
    I was doing the same thing. Does the X use a TI processor? If so, then it's likely you have the same problem I did. All the finger pointing back and forth between Pandora and Google and the root of the problem is neither of their fault.

    If you're rooted, give what I did a shot and see if it helps. If all you do is rename the file, you can easily revert back to it if it doesn't.
    I'm pretty sure its a TI OMAP Chip - those looping (finger) pointers get in the way of solutions. I have already pulled the gingerbread source and am working on a rom with some developers in my office. buh-bye moto-blur! Ill post my findings on the audio track info when I find.
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    possible that the x has something different affecting pandora, im on a D1 and when i did my first 2.2.1 rom pandora worked fine. i went through about 3 other 2.2.1 roms and still it worked. so there must be another issue here
  9. Junior Droid
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    Quote Originally Posted by circsmonky View Post
    possible that the x has something different affecting pandora, im on a D1 and when i did my first 2.2.1 rom pandora worked fine. i went through about 3 other 2.2.1 roms and still it worked. so there must be another issue here
    I am fairly certain MOTO missed the bus here on the X, my wifes incredible sounds better. And a co-worker's D1 does too. I think kkozma is right if the new X and D2 have the TI chipset - prolly related to that.
    Last edited by haasta; 12-27-2010 at 05:31 PM.
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    Quote Originally Posted by circsmonky View Post
    possible that the x has something different affecting pandora, im on a D1 and when i did my first 2.2.1 rom pandora worked fine. i went through about 3 other 2.2.1 roms and still it worked. so there must be another issue here
    It worked fine for me too, but it sounded like garbage exactly every other song. Do you stream over 3g? For whatever reason, if I used wifi it always sounded great. Flip the wifi off and it was crap. Also, the type of gear you use makes a difference. If you're only listening on some cheapo headphones, you likely won't notice the drop in sound quality from song to song.

    Every single d1 I've played with has the same issue. I'm very sensitive to sound quality and I pay for pandora one, so it was very important to figure this out.
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