[Openal] choppy sound :(

[M. Kalthoff]

Hi,

Sadly, installing the new OpenAL run-times didn't solve the problem.

Maybe you get a better idea if you listen to a short sample i recorded
[~84kB]

http://www.hotlinkfiles.com/files/161131_cmfmy/artifacts.mp3

You can hear there a rotating sine wave sample with outerCone = 60° and
innerCone = 40°, while listener and source aren't moving.

The artifacts are noticeable especially during the interpolation between
inner and outer cone. Even at update rates >100 times/second(but it
gets less intense/often).

Same occurs with "fast" moving sources or listeners.

If anyone has an idea, let me know.

Thx,

matze



Daniel PEACOCK schrieb:
> Hi,
> 
> Can you please try installing the new OpenAL run-times available from 
> http://developer.creative.com/landing.asp?cat=1&sbcat=31&top=38 
> <http://developer.creative.com/landing.asp?cat=1&sbcat=31&top=38> and 
> seeing if this improves the situation?
> 
> Thanks,
> 
> Dan
> Creative Labs, Inc.
> 
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> Inactive hide details for "M. Kalthoff" <m.kalt at web.de>"M. Kalthoff" 
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> 
>                         *"M. Kalthoff" <m.kalt at web.de>*
>                         Sent by: openal-bounces at opensource.creative.com
> 
>                         07/17/2007 05:14 AM
> 
> 	
> 
> To
> 	
> openal at opensource.creative.com
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> cc
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> Subject
> 	
> [Openal] choppy sound :(
> 
> 	
> 
> 
> oooops,
> i forgot to change the mails-subject.
> sorry.
> and sorry for this mail, explaining the obvious.
> 
> matze
> 
> 
> 
> M. Kalthoff schrieb:
>  > Hi everyone,
>  >
>  > i've got a little problem, and hope someone can help.
>  > the sound is kind of chopped if i quickly move the listener or source.
>  > i'm updating as suggested in the effects extension guide.pdf[p. 45]
>  > at approximately 30 times per second.
>  > (the problem is the same but a little less noticeable if i remove the
>  > brake and update at >100 times per second)
>  >
>  > current hardware setup is:
>  >     Pentium 4 2,4GHz
>  >     512MB
>  >
>  >     [0] "Generic Software" (default)
>  >         Effect Extension Supported: YES
>  >         Supported Specification Version: 1.1
>  >    
>  >         Max Sources: 256
>  >         Max Effect Slots: 128
>  >         Max Aux Effect Slots: 1
>  >         Max Aux Effect Slot Sends: 1
>  >         [...]
>  >
>  >
>  > current test-scene setup is:
>  >     - 1 sound source (a looping sine wave sample)
>  >       at [0, 0, 0]
>  >       slowly rotating (10s per 360°)
>  >       inner cone = 45°
>  >       outer cone = 180°
>  >
>  > everything sounds fine, is directional and calculated correctly,
>  > i guess.
>  > if i now quickly move the listener(which is attached to the camera),
>  > the sound gets choppy as if i wouldn't update the listeners position
>  > as often as needed.
>  >
>  > would be nice if someone could give me a hint for fixing this.
>  > thanks.
>  >
>  > m. kalthoff
> 
> 
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