algo | One of these algorithms.
BASS_3DALG_DEFAULT | The default algorithm. If the user has selected a surround sound speaker configuration (eg. 4 or 5.1) in the control panel, the sound is panned among the available directional speakers. Otherwise it equates to BASS_3DALG_OFF.
| BASS_3DALG_OFF | Uses normal left and right panning. The vertical axis is ignored except for scaling of volume due to distance. Doppler shift and volume scaling are still applied, but the 3D filtering is not performed. This is the most CPU efficient algorithm, but provides no virtual 3D audio effect. Head Related Transfer Function processing will not be done. Since only normal stereo panning is used, a channel using this algorithm may be accelerated by a 2D hardware voice if no free 3D hardware voices are available.
| BASS_3DALG_FULL | This algorithm gives the highest quality 3D audio effect, but uses more CPU. This algorithm requires WDM drivers, if it's not available then BASS_3DALG_OFF will automatically be used instead.
| BASS_3DALG_LIGHT | This algorithm gives a good 3D audio effect, and uses less CPU than the FULL algorithm. This algorithm also requires WDM drivers, if it's not available then BASS_3DALG_OFF will automatically be used instead.
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