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More => Old Versions => Media Jukebox => Topic started by: Tab on August 16, 2005, 06:04:01 pm

Title: Distortion problem
Post by: Tab on August 16, 2005, 06:04:01 pm

Hi. I'm getting a fair bit of distortion, the sound is clipping on many tracks.

How can I determine where this is happening, locate the problem? I know the system volume setting makes no difference to distortion, so it would appear to be somewhere digital... which makes not much sense to me.

ty, Tab


Media Jukebox  8.0.400
Install Path: C:\Program Files\J River\Media Jukebox\

CPU: AMD Athlon 1533 MHz MMX
Memory: Total - 261 MB, Free - 15 MB
OS: Microsoft Windows 2000  Workstation 5.0  (Build 2195)

Internet Explorer: 6.0.2800.1106
ComCtl32.dll: 5.50.4916.400
Shlwapi.dll: 6.00.2800.1106
Shell32.dll: 5.00.2920.0000
wnaspi32.dll: Internal ASPI Layer

Title: Re: Distortion problem
Post by: modelmaker on August 17, 2005, 02:09:57 am

Quote

Memory: Total - 261 MB, Free - 15 MB

What else do you have running? I'm no expert, but 15 MB of usable ram is pretty lpw. This could easily cause playback to be distorted.

Title: Re: Distortion problem
Post by: Tab on August 19, 2005, 03:54:32 am

Thanks for the input here. I checked DSP studio, but it was already set to clip protection. The files should be fine as they all play no problem on MJ and MC on an other system, so I think the problem has to be not the files themselves.

15M RAM free... I hadnt even noticed that. I guess I like multitasking :) 32 windows open, often more. More RAM is now on the to do list.

I've just played the one track with highest recording levels, and no disortion prob. I guess inconsistency would fit the RAM thing.

Thanks!

Tab

Title: Re: Distortion problem
Post by: KingSparta on August 19, 2005, 06:19:10 am

turn off the DSP untill you find what option is causing a distortion.

i had this problem in MJ8

Title: Re: Distortion problem
Post by: Tab on August 20, 2005, 02:14:51 pm

Thanks, I'll try that.

Today when it was distorting there was 50M free, when not distorting later 38M free.... wouldn't free RAM means MJ is using all it wants?


Tab

Title: Re: Distortion problem
Post by: Tab on August 29, 2005, 06:47:13 pm

I have a little more info now. DSP studio makes no difference on or off, soft clip or hard. When it clips, the 1.8G CPU is running at 100%, and its MJ eating 98% of CPU cycles.


Tab

Title: Re: Distortion problem
Post by: KingSparta on August 29, 2005, 07:02:40 pm

look at the media file type info for MPEG Type

I found out the other day Media Center does not work well with MPEG 2.5 files, the file 2 below is how it is listed in Media Center.

File-1

MPEG-2 Layer 3
68 Kbit VBR
24.0 Khz Joint stereo

File-2

MPEG-2.5 Layer 3
24 Kbit CBR
8.0 Khz Joint stereo

Title: Re: Distortion problem
Post by: Tab on September 30, 2005, 08:06:31 am

I've been too busy to really get to the root of this, and nothing I tried made any difference. But I think I've got a lead. A new suite of software is all complaining that the sound card cant do 44kHz 16 bit stereo. I didnt pay much attention to the sound when I got the machine, its onboard sound... now I know, and will pull a card from another machine.

cheers, Tab

Title: Re: Distortion problem
Post by: KingSparta on October 02, 2005, 06:00:23 pm

well the other thing was

one time i installed new sound board drivers

well they screwed up everything and i got Distortion

so it could be soundbaord drivers also.