[Openal] <native device> and HRTFs

[Daniel PEACOCK]

Hi Katharina,

I believe the X-Fi cards use IID and ITD as well as HRTFs.   It also uses
cross-talk cancellation for certain speaker modes.

If your mobile platform has a PCMCIA slot then it might be worth looking at
the Audigy 2 ZS Notebook (PCMCIA card).   This should give more convincing
3D audio than the DS3D software processing.   Will you be listening to the
output on headphones or speakers?

Dan
Creative Labs, Inc.

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             katharina.garbe at f                                             
             it.fraunhofer.de                                              
                                                                        To 
             07/11/2007 02:58          openal at opensource.creative.com      
             PM                                                         cc 
                                       dpeacock at creativelabs.com,          
                                       achandak at gmail.com                  
                                                                   Subject 
                                       Re: [Openal] <native device> and    
                                       HRTFs                               
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Hi,

thanks a lot for your fast replies.

@Anish:
Actually, my application will have more than one sound source ... a user
will perceive several sounds (say 4-6) at certain positions in 3D-Space.
That's what it is supposed to be ... Also, the application is supposed to
run outdoors on a ultra-mobile PC ... so I am afraid I won't have enough
CPU space to use several sound sources and fold them with HRTFs ...

@Dan:
Well, before working with OpenAL I have indeed written a test application
with DirectSound3D which used the Software HRTF (full and light HRTF)
algorithm ... and I thought it was okay. Now I have written the same small
app with OpenAL and it all sounds like DS3D no virtualization at all ...

What about X-Fi CMSS-3D or just CMSS-3D? Does it use IID/ITD? Or is that
the description for HRTF-processing?

Katharina



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