LTB Audio Systems USB Pro 5.1 Surround Sound Headphone System - Manual (Page 7)

The 4th Advantages of USB Multi Channel Sound Technology:
Dolby Digital DSP Solution Integrated (Optional)
USB Multi Channel is the world first PC audio technology that can integrate
whole Dolby Digital DSP technology in a software module. This special feature
include 1 ] x and RTCE (Real-Time Content Encoder) function modules.
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