The chamber sound reaches a stable state during reverberation time, and the residual sound is repeatedly absorbed by the sound absorbing material in the room after the sound stops, and the original value of the average sound energy density word decays to one part in a million (Acoustic code attenuation 60dB).
The time required, expressed in T60.

The GK side hangs up the call in case of ( ).

H.460.19 specifies the public-private network traversal processing of H.323 call control signaling.

The color rendering index affects the reproducibility of the image, and when the color rendering index is low, the color of the image will deviate greatly from the original image. ( )

In VR scenarios, the terminal cannot join the meeting in the following ways ().