CMI8738-MX Datasheet, PDF (24/32 Pages) C-Media Electronics – PCI-6CH C3DX series /PCI-Based HRTF 3D Extension Positional Audio Chip

CMI8738
PCI-6CH C3DX series /PCI-Based HRTF 3D Extension Positional Audio Chip
9. Audio Processing Technology
9.1 Stereo
It is only one-dimensional, as sounds come from (left /right) the physical location of speakers.
9.2 Surround (Stereo Expander)
It filters the existing stereo signal to make the sounds fill in the area around the speakers, and in front
of the listener. Sound sources appear to come from outside the physical locations of the speakers.
9.3 Multi-Speaker Surround (Dolby Pro Logic or Digital AC-3)
It uses five speakers instead of two to surround the listener; hence, sound sources come from five
directions and create engaging audio experience. This surround sound effect, however, has to be
pre-recorded, and it dose not support interactive environment.
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