China Tower Co., Ltd., referred to as China Tower, is mainly engaged in the construction, maintenance and operation of base station supporting facilities such as communication towers, high-speed rail and subway public network coverage, and large-scale indoor distribution systems. In this project, Tianchuang will renovate and upgrade the audio-visual system of the large multi-functional hall and small conference room of China Tower Industrial Park. 
Project requirements
This project is special, the original main processing system of the large multi-functional hall of China Tower Industrial Park is the original classic model of BIAMP Audia series processor, but after years of operation and use, the processor needs to be updated, so Party A decided to transform the original system, andSpecify the BIAMP processor to continue as the core deviceThe small conference room also needs to be partially transformed to complete the overall backup. After further communicating the needs, we learnedThe customer wanted the original processor to be used as a backup processor and wanted the new processor to form a master/backup concept with the original digital mixerto ensure the use of important meetings. In addition, the microphone and speaker parts are also used as main and backup to ensure the use of important meetings.
Solution
In the initial system, the processor is the core, responsible for processing the signal of the input part of the microphone and the signal of the output part of the speaker, and the mixer is responsible for the intermediate part of the tuning, so when the processor fails, the whole system will be paralyzed. In order to meet the customer's multi-level active and standby needs, Tianchuang engineers have added audio source distributors and mixers in large multi-function halls and small conference rooms between the audio source and the core processing equipment, and between the core processing and playback equipment. All input sound sources and output lines have been doubled the digital and analog line allocation, so many nodes have been added in the implementation, and the difficulty of line layout and troubleshooting has also increased, so in the actual construction, the inspection of the line has become particularly important, and it needs to be combined with the original system transformation to complete the corresponding docking, which also invisibly increases the overall implementation difficulty and requirements. 
In the face of difficulties, we strive to find the best solutionWe upgraded the mixer to Dante and selected the Dante-enabled processor as the core processor, using the original processor as a backupThe input end of the whole system adopts two sets of digital conference systems to back up each other, and other audio source signals enter the digital audio processor and digital mixer respectively through the way of cents, the two sets of signals work at the same time and can complete the signal communication through Dante, and then enter the original amplifier through the mixer to complete the room sound reinforcement, and the newly added digital power amplifier completes the mixing of analog signals and Dante signals, and builds two independent sound reinforcement systems with the original power amplifier to complete the backup of the whole link.
Small meeting roomsA dual-processor approach is adopted, with cents and mixers added to the input and output, and the signals work in sync in both processors。In this way, in the work of the system, no matter if any processor fails, the meeting can be continued. 
Selected by Tianchuang engineers in the projectBiamp Tesira series processors Server IO and Tesira Fort Écorte seriesServer IO can support 64*64 Dante digital transmission, and Tesiraforté DAN VT can support 32*32 digital transmissionAmong them, the large multi-purpose hall Server IO is linked to the mixer, and the small conference room is linked between tesiraforté and tesirafortéThe transmission and backup of digital signals is completed through Dante. Counmmity's ALC amplifier has its own DSP, which can complete the backup switching between Dante and analog signals by itself.
Acceptance effect
After the completion of the project, the customer expressed great affirmation to Tianchuang, and completed the overall project transformation and security backup under the limited time. It effectively guarantees the use of important meetings, and the sound effect has been greatly improved compared to before.