2023 Guangzhou DSPPA Audio Co., Ltd.
2023 Guangzhou DSPPA Audio Co., Ltd.

Content and Technical Specifications of Conference System Debugging

Published Date: 01 Jul, 2023

The main content and technical indicators of the conference system debugging

  • Use AEC echo cancellation technology to solve the echo of common video conferences, so that the echo signal is less than 60dB above the signal source;

  • Through NC noise separation technology, reduce the accumulation of multi-point noise, so that the accumulation of conference system audio noise cannot be higher than 6dB above the input noise of a single signal source;

  • Through MIC priority speech management, automatically enhance the sound pickup gain of the non-speaking person's location MIC, avoiding the impact of multiple accumulations of the same signal on speech clarity within a certain time interval. The sound pickup interval between MICs (the MIC in front of the speaker and the MIC next to it) should be less than 30ms. The sound pickup gain of the MIC in front of the speaker is more than 60dB higher than that of the farther MIC;

  • Through the above debugging, solve the three major sound problems of echo, noise, and multi-MIC reverberation in theconference system.

Function debugging of the conference system

  • Conference speech (voting): Connect the central controller, chairman (voting) machine, and representative (voting) machine to the system in turn, and the central controller keeps the equipment in a good power-on state;

  • Initialize and set the chairman (voting) machine and representative (voting) machine in order, and assign an address code to each speaking microphone, and record the corresponding address code of each microphone;

  • Detect the receiving situation of the voting receiver signal at any seat and record the signal quality of each receiving point, so as to ensure the accuracy and stability of the voting data at each position;

  • Simultaneous interpretation: Connect the central controller, interpreter machine, infrared transmission host of simultaneous interpretation, and infrared radiation board to the system in turn. Set the functions of the interpreter machine and ensure that each interpreter machine can select at least one channel of language;

  • After the simultaneous interpretation transmission host and the infrared radiation board are powered on properly, detect the signal reception situation of the wireless simultaneous interpretation receiver at any position in the venue, and record the signal quality of each receiving point. It should ensure that the simultaneous interpretation sound is clear and stable at every position in the venue, there should be no signal reception blind spots, and there should be no crosstalk;

  • Software: Connect the control computer and the central control via RS-232 cable, and ensure the communication is stable. According to the combination of software modules, the user installs the conference system management software into the control computer and then configures the software functions;

  • After system debugging, it should operate normally, meet the design requirements, functional requirements, and usage requirements, and subjective listening should have clear language, full music, accurate positioning, and uniform sound field to achieve the best overall effect.

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