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VCE
Reverberation time refers to the period of time taken for a specified decrease (usually 60 dB) in sound pressure level at a given frequency and point in an enclosed or partly enclosed space, after the sound signal from an acoustic source is interrupted. Generally, the reverberation time is represented using T60. ( )
A. TRUE
B. FALSE
The MCU and network recoding server use ( ) to transmit video streams between each other.
A. IP
B. H.323
C. SIP
D. RTP
For Reverberation, The collect tone mainly uses direct sounds. An appropriate amount of reverberation makes human voice more vigorous. Therefore, a proportion % direct sounds in the collect tone is recommended. However, the reverberation after 50 ms makes listeners difficult to understand. It is good practice that the sound energy reaches over 80% after 50 ms. ( )
A. TRUE
B. FALSE