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Topic: Samsung T-629 HE / HE-PS AAC difficulties (Read 7931 times) previous topic - next topic
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Samsung T-629 HE / HE-PS AAC difficulties

I just got another cell phone and was all excited that it supports AAC.  I found many sites stating that it supports "MP3 / AAC / ACC+ / eAAC+ / WMA" ( http://www.mobiledia.com/phones/samsung/sgh-t629.html).  Heres what I found:

1.) MP3 work great.
2.) AAC-LC at all tested bitrates work (tested between 16 - 96 kbit)
3.) AAC-HE (64 kbit) makes the phone restart.
4.) AAC-HE/PS (16, 32, and 48 kbits) makes wierd repetitive click / buzz  sound (faster at greater bitrates) and the music is stuttering.
5.) I only could play AAC files if they were AAC-raw with a .aac extension

I only got the Winamp CT encoder to make any usable files.  I tried to use nero and use yamb 2.0 to extract the aac track, but the resulting track was bigger than the original file!

I did much of this testing at work so you'll have to wait till tomorrow for command lines.  FYI.. I used MeGUI and the Sharktooth audio presets at first, and was further unsucessful with other tweaks.

I'd love to find an answer posted before I get around to adding more info to this thread tomorrow.  Can you help out?

Samsung T-629 HE / HE-PS AAC difficulties

Reply #1 –
Quote from: fields_g on
I tried to use nero and use yamb 2.0 to extract the aac track, but the resulting track was bigger than the original file!


This is the expected result since the MP4 container is more efficient than ADTS AAC, which is what you are extracting.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #2 –
I've got Samsung X700. It is on the BOX: AAC+ But it only plays LC-AAC and MP3

Samsung T-629 HE / HE-PS AAC difficulties

Reply #3 –
Quote from: Waterfall on
I've got Samsung X700. It is on the BOX: AAC+ But it only plays LC-AAC and MP3


This is not true, I also have an X700. It plays AAC+ nicely, in the MP4 container of course

Samsung T-629 HE / HE-PS AAC difficulties

Reply #4 –
Quote from: enry2k on
Quote from: Waterfall on

I've got Samsung X700. It is on the BOX: AAC+ But it only plays LC-AAC and MP3


This is not true, I also have an X700. It plays AAC+ nicely, in the MP4 container of course


Not realy  HE-AAC plays without SBR (no higher frequensy), HE-AAC v2 plays without PS (mono sound)

I tried .aac, .mp4, .3gp

Samsung T-629 HE / HE-PS AAC difficulties

Reply #5 –
Quote from: Waterfall on
Quote from: enry2k on

Quote from: Waterfall on

I've got Samsung X700. It is on the BOX: AAC+ But it only plays LC-AAC and MP3


This is not true, I also have an X700. It plays AAC+ nicely, in the MP4 container of course


Not realy  HE-AAC plays without SBR (no higher frequensy), HE-AAC v2 plays without PS (mono sound)

I tried .aac, .mp4, .3gp


I agree with you about parametric stereo, (This is confirmed by the data sheet anyway), but I am sure higher frequencies are reconstructed properly (It is not like using QuickTime player). I use to encode tracks at 64 kbps using Nero or Winamp. The file extension is .mp4. In the case of Winamp I rename from .m4a to .mp4. Ones again I swear high frequencies are present

Regards


Enrico

Samsung T-629 HE / HE-PS AAC difficulties

Reply #6 –
Enrico, try this:
Encode highquality track to LC, HE and HE v2 and play from your X700 one after another.

On my X700 with good headphones (original Samsung headphones sounds awful to me) LC 102 kbps sounds very good and stereo, HE 64 kbps stereo but poor quality, HE v2 32 kbps good quality but mono.

What version of firmware have you got?

Samsung T-629 HE / HE-PS AAC difficulties

Reply #7 –
The easiest way to tell if SBR is working is encode an LC-AAC file at 22Khz, 64kbps and see if it sounds the same as the HE-AAC version.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #8 –
Quote from: Garf on
This is the expected result since the MP4 container is more efficient than ADTS AAC, which is what you are extracting.



ADTS should not exist.

But it does.
-----
J. D. (jj) Johnston

Samsung T-629 HE / HE-PS AAC difficulties

Reply #9 –
Quote from: Firon on
The easiest way to tell if SBR is working is encode an LC-AAC file at 22Khz, 64kbps and see if it sounds the same as the HE-AAC version.


Didn't get what you mean    Can you explane? I'm interested!

Samsung T-629 HE / HE-PS AAC difficulties

Reply #10 –
Resample a song to 22KHz then encode it into ~64kbps AAC. Compare it with the HE-AAC version. If they sound the same, then your player is not decoding the SBR properly.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #11 –
Quote from: Waterfall on
Enrico, try this:
Encode highquality track to LC, HE and HE v2 and play from your X700 one after another.

On my X700 with good headphones (original Samsung headphones sounds awful to me) LC 102 kbps sounds very good and stereo, HE 64 kbps stereo but poor quality, HE v2 32 kbps good quality but mono.

What version of firmware have you got?


High fidelity music sounds graceful to me when encoded in he-aac at 64 kbs and played by x700. I am aware 128 Kbs lc-aac sounds even better, but he-aac is more than acceptable. The same is applied to the computer players. I have already knew v.2 parametric stereo is not decoded, so the output sound becomes mono.

Where  can I check the firmware version in my x700? How could I update it?
And.. I use optional headphones they sound better than the original ones. Dp you know how to adapt a standard jack plug to the Samsung's proprietary socket?

Samsung T-629 HE / HE-PS AAC difficulties

Reply #12 –
Quote from: Firon on
Resample a song to 22KHz then encode it into ~64kbps AAC. Compare it with the HE-AAC version. If they sound the same, then your player is not decoding the SBR properly.


Tricky! Tried that - sound the same 

Quote
Where can I check the firmware version in my x700?


Type    *#1234#    Mine is X700EFA1 and it definitely doesn't play SBR in HE-AAC    There is one newer version. Maybe you've got one?

Quote
Dp you know how to adapt a standard jack plug to the Samsung's proprietary socket?


Ok. One way is to buy an adapter. Not avalable in my country. But it does exist. Then you can buy another set of stereo headphones for X700 and solder better speakers or a jeck. Or disassemble original headphones and drill small holes in the metal plates. Sounds MUCH better. But it's easy to loose headphones 
One thing I don't get. X700 gives exelent sound quolity. But one has no chance to listen to it through original headphones!!! And Samsung doesn't provide an adapter to standard jack.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #13 –
[quote name='Waterfall' date='Jan 25 2007, 12:05' post='467050']
[quote name='Firon' post='466845' date='Jan 25 2007, 00:11']
Type    *#1234#    Mine is X700EFA1 and it definitely doesn't play SBR in HE-AAC    There is one newer version. Maybe you've got one?

Quote
Dp you know how to adapt a standard jack plug to the Samsung's proprietary socket?


Ok. One way is to buy an adapter. Not avalable in my country. But it does exist. Then you can buy another set of stereo headphones for X700 and solder better speakers or a jeck. Or disassemble original headphones and drill small holes in the metal plates. Sounds MUCH better. But it's easy to loose headphones 
One thing I don't get. X700 gives exelent sound quolity. But one has no chance to listen to it through original headphones!!! And Samsung doesn't provide an adapter to standard jack.
[/quote]

Thank you, the answer of my phone is Dev. version X700AEL2

Maybe, I could find the plug adapter for the headphones by searching in the internet.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #14 –
Quote
Thank you, the answer of my phone is Dev. version X700AEL2


Maybe Samsung produces totaly different X700 for your country.    The only versions of firmware I know are:

X700XEEK6
X700XEFA1
X700XEFC3 - latest

Tonight I'm buying microSD 2Gb. It seems the only way to put more music.

enry2k,
have you tried to compare LC-AAC ~107 kbps and HE-AAC 64 kbps? They sound very different from my X700 but no difference if played from PC.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #15 –
Quote from: Waterfall on
Quote
Thank you, the answer of my phone is Dev. version X700AEL2


Maybe Samsung produces totaly different X700 for your country.    The only versions of firmware I know are:

X700XEEK6
X700XEFA1
X700XEFC3 - latest

Tonight I'm buying microSD 2Gb. It seems the only way to put more music.

enry2k,
have you tried to compare LC-AAC ~107 kbps and HE-AAC 64 kbps? They sound very different from my X700 but no difference if played from PC.


Curious! Where can I find the latest samsung firmware? I have tried to search on Google, but I have got no results. Which procedure I have to use to install the update?

I took a test last summer, I have noticed some differeces, but I had original headphones at that time. So I am going to repeat the test again next, so I will let you know the outcome.

Samsung T-629 HE / HE-PS AAC difficulties

Reply #16 –
Last summer?... Ok, no need to update your device. All those three are almost the same. Just minor bugfixes.

Bought 2Gb card tonight and... X700 doesn't support it. So now it's only LC-AAC and only 1Gb  Time to change the little fela