Cisco TelePresence System Codec C90 and Profile 65” Dual using C90
Contents | Introduction | Web interface | Advanced configuration | Password protection | Appendices |
Requirement for speaker systems connected to a Cisco TelePresence C Series codec
Cisco has put in a lot of effort to minimize the camera to screen delay on our TelePresence endpoints.
New consumer TVs are usually equipped with “Motion Flow” or similar technology to insert new video frames between standard frames to create smoother images. This processing takes time and to maintain lip synchronization, the TV will delay the audio so that the audio and video arrives at the same time.
The echo canceller in the Cisco endpoints can handle such delay up to 30 ms. Many consumer TVs are not made for real time video communication and may introduce more than 30 ms of delay.
If you use such a TV together with a C Series codec it is recommended that you turn off “Motion Flow”, “Natural Motion” or any other video processing that introduces additional delay.
Some consumer TVs also support advanced audio processing like “Virtual Surround” effects and “Dynamic Compression” to improve the TV experience. Such processing will make any acoustic echo canceller malfunction and should hence be switched off.
Some monitors are equipped with a setting called ‘Game Mode’. This mode is specifically designed to help reduce the response time and will usually help to reduce the delay.
Administrator guide
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D14635.05 Profile C90 and Codec C90 Administrator Guide TC4.1, February 2011. | 79 | www.cisco.com |
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