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| All audio sounds low bitrate, but plays fine on another box. http://forum.linhes.org/viewtopic.php?f=6&t=18663 |
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| Author: | bit4byte [ Tue Jul 29, 2008 2:15 pm ] |
| Post subject: | All audio sounds low bitrate, but plays fine on another box. |
Hi, Since upgrading to R5.5 I have noticed that all audio output sound very low bitrate (difficult to explain how it sounds, but certain sound, like a wistle or other similar hight pitched sounds has a certain amount of digital artifacts like when you use a low bit rate codec) I have read that there is something called the audio tweaker, but am unsure how it's involved if at all. The issue is as far as I can tell it's on all manner of audio output, be it live TV, recorded playback or Online music streams. And if I pull the mpg off of the backend and play it on another machine (Windows/VLC) sound plays perfectly. lspci: 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02) |
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| Author: | cliffsjunk [ Fri Aug 01, 2008 10:47 am ] |
| Post subject: | |
Try playing that mpg on your KM box, but with something else like maybe mplayer. If it were a recording issue I would mention that higher numbers are worse sounding when setting up audio in your record profile. I ran into that myself, jacking up the slider only to find out something that I already knew... There is a setting, maybe in mythtv-setup that allows you to specify the audio bit rate. You might have it set to a value that is not supported (well) by your hardware. Try other values. Lastly, you might try swapping in a different audio card for a test. Cliff |
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