[mythtv] Yipee, almost there but audio whine

Chris Liscio mythtv-dev@snowman.net
Wed Jan 8 21:12:51 EST 2003


Allow me to add some detailed first-hand experience (both from a
performance and quality standpoint) to this..

Going from 44100 uncompressed audio to 32000 compressed (mp3 quality 7)
has actually smoothed out the playback for me on an AthlonXP 1700+.
Must be the ~10MB/sec requirement for stereo 44100 audio that is no
longer around... ;)

Also, I have not noticed any loss in audio quality by going from 44100
to 32000 (both uncompressed).  The (somewhat slight) decreased CPU
necessary to mp3-encode a 32000hz audio stream vs a 44100hz one is
certainly a welcome change.

Cheers,
Chris

-----Original Message-----
From: mythtv-dev-admin@snowman.net [mailto:mythtv-dev-admin@snowman.net]
On Behalf Of Isaac Richards
Sent: Wednesday, January 08, 2003 3:05 PM
To: mythtv-dev@snowman.net
Subject: Re: [mythtv] Yipee, almost there but audio whine


On Wednesday 08 January 2003 02:52 pm, Jesse Crews wrote:
> Audio whine could be caused by AC'97 devices requiring a sample rate 
> of 48KHz. Try mixing at that rate to prevent resampling. It'll give 
> you the best quality sound anyway. 32KHz is pretty low, and CD quality

> is 44.1KHz 16 bits.

And broadcast TV is nowhere near CD quality audio, so sampling at
44.1khz is 
really overkill.

Isaac
_______________________________________________
mythtv-dev mailing list
mythtv-dev@snowman.net
http://www.snowman.net/mailman/listinfo/mythtv-dev





More information about the mythtv-dev mailing list