ac3 to mp3 via besweet creates high-pitch squealing

[Itness]

Okay, i searched and read several threads, but found nothing that matched my situation or that offered much help.

First, I used DVD Shrink to make a clip from a DVD in vob format. Next, I extracted the ac3 from the clip/vob using DGIndex. Then, with BeLight, i converted the ac3 to mp3.

Listening to the ac3 in VLC player it sounds fine, but the mp3 has frequent high pitched squealing when played in VLC or foobar.

You can download the ac3 and mp3 from a 10s clip here:
(686 KB)

http://www.sendspace.com/file/ddnjs4

Here is the BeSweet log file:

BeSweet v1.4 by DSPguru.
--------------------------
Using azid.dll v1.8 (b825) by Midas (midas@egon.gyaloglo.hu).
Using lame_enc.dll v1.28 (4/6/2002), Engine 3.92 <http://www.mp3dev.org/>.

Logging start : 12/02/07 , 02:43:29.

BeSweet.exe -core( -input C:\temp\clip_10s.ac3 -output C:\temp\clip_10s.mp3 -logfile C:\temp\clip_10s.log ) -azid( -s stereo -c normal -L -3db ) -lame( -b 128 )

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : C:\temp\clip_10s.ac3
[00:00:00:000] | Output: C:\temp\clip_10s.mp3
[00:00:00:000] | Floating-Point Process: Yes
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Input Channels Mode: 1/0, Bitrate: 448kbps
[00:00:00:000] | Output Stereo mode: Stereo
[00:00:00:000] | Total Gain: 0.000dB, Compression: Normal
[00:00:00:000] | LFE levels: To LR -3.0dB, To LFE 0.0dB
[00:00:00:000] | Center mix level: BSI
[00:00:00:000] | Surround mix level: BSI
[00:00:00:000] | Dialog normalization: No
[00:00:00:000] | Rear channels filtering: No
[00:00:00:000] | Source Sample-Rate: 48.0KHz
[00:00:00:000] +-------- LAME -------
[00:00:00:000] | Bitrate method : CBR
[00:00:00:000] | MP3 bitrate : 128
[00:00:00:000] | Channels Mode : Joint Stereo
[00:00:00:000] | Error Protection: No
[00:00:00:000] +---------------------
[00:00:09.984] E7: CRC error
[00:00:09:984] Conversion Completed !
[00:00:09:984] Actual Avg. Bitrate : 131kbps
[00:00:01:000] <-- Transcoding Duration
Logging ends : 12/02/07 , 02:43:30.

Any suggestions for troubleshooting this annoying squealing would be much appreciated. Cheers.

[tebasuna51]

Any suggestions for troubleshooting this annoying squealing would be much appreciated. Cheers.

I only can confirm the problem between your mono ac3 source and the azid decoder (not only azid.dll with BeSweet but also azid.exe standalone decoder).

Using the most recent versions the problem is not equal but the result is also useless:
BeSweet v1.5b31 by DSPguru.
--------------------------
Using azid.dll v1.9 (b922) by Midas (midas@egon.gyaloglo.hu).
Using lame_enc.dll v1.32 (3/10/2006), Engine 3.97 <http://www.mp3dev.org/>.

Logging start : 12/02/07 , 16:01:01.

D:\Programa\Audio\besweet\BeSweet.exe -core( -input D:\Internet\clip_10s.ac3
-output D:\Internet\clip_10s_1.mp3 -logfile D:\Internet\clip_10s_1.log )
-azid( -c normal ) -lame( -b 128 )

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : D:\Internet\clip_10s.ac3
[00:00:00:000] | Output: D:\Internet\clip_10s_1.mp3
[00:00:00:000] | Floating-Point Process: Yes
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Input Channels Mode: 1/0, Bitrate: 448kbps
[00:00:00:000] | Output Stereo mode: Dolby surround compatible
[00:00:00:000] | Total Gain: 0.000dB, Compression: Normal
[00:00:00:000] | LFE levels: To LR -INF, To LFE 0.0dB
[00:00:00:000] | Center mix level: BSI
[00:00:00:000] | Surround mix level: BSI
[00:00:00:000] | Dialog normalization: No
[00:00:00:000] | Rear channels filtering: No
[00:00:00:000] | Source Sample-Rate: 48.0KHz
[00:00:00:000] +-------- LAME -------
[00:00:00:000] | Bitrate method : CBR
[00:00:00:000] | MP3 bitrate : 128
[00:00:00:000] | Channels Mode : Joint Stereo
[00:00:00:000] | Error Protection: No
[00:00:00:000] +---------------------

[00:00:03.114] W7: Downmix overflow (0: +94.4dB)
... (309 messages)
[00:00:09.920] W7: Downmix overflow (0: +OVF)
[00:00:09:984] Conversion Completed !
[00:00:09:984] Actual Avg. Bitrate : 131kbps
[00:00:01:000] <-- Transcoding Duration

Logging ends : 12/02/07 , 16:01:02.

Only can recommend you use Foobar2000 or BeHappy to do the job, both softs work fine with your sample.