VIVOTEK PZ6112 사용자 설명서

다운로드
페이지 93
 
 
 
 
 
 
 
 
 
 
- 48 - 
 
www.vivotek.com 
T: 886-2-82455282 
F: 886-2-82455532 
 
 
Audio 
“Transmission mode” There are five options to select. For all the modes, only one 
client can talk to the server at the same time. 
“Full-duplex (Talk and listen simultaneously)” In this mode, the User can talk to 
the server while listening sound from the server simultaneously. 
“Half-duplex (Talk or listen, not at the same time)” In this mode, the User can 
talk to the server or listen from the server, but not at the same time. 
“Simplex – Talk only” In this mode, the User can only talk to the server. 
“Simplex – Listen only” In this mode, the User can only listen from the server. 
“Disable” In this mode, the audio is disabled in both directions. 
“Send audio from the active client to all the other clients” In half duplex 
transmission mode, select the option to talk to the server and broadcast your voice to 
all the other clients. 
“Improve audio quality in low bandwidth environment” If the Network Camera 
works in versatile or low network bandwidth environment, the User can check this 
option to improving audio quality by sacrificing some real-time synchronization. 
“Audio source” Select source from external or built-in microphone. 
“Acoustic echo cancellation” In full-duplex mode, the server can play sound from 
the client and receive sound from the environment and send to client. Since the sound 
from the client is played by server, it will also be received by the server’s microphone 
and send back to client. That is the client will hear its echo. Select this option can 
prevent echo by sacrificing the video frame rate.   
“Bit rate” 
There are three kinds of bit-rate for audio. 32Kbps and 24Kbps are suitable 
for both music and speech like audio while 8Kbps are suitable for only speech like 
audio.