... Apply to teaching, tour guides, conference, Interpretation, training wireless tour guide system, audio tour guideApply to teaching, tour guides, conference, ... 64K; Frequency Response 20-20KHz,HDCD sound quality;4. Shortest latency(<0.5ms), surround lsound;5. Ultra-low power consumption, ... their instructors.3. in public meetings as an interpretation system. The interpreter can simply sit at the back of ...