(Generally speaking, a medium conference room (for example, an area of ??less than 200m2) can be configured with a sound reinforcement system and a conference commenting system based on needs; the conference commenting system includes a conference commenting host, a conference chairman unit and a conference representative unit, and the sound reinforcement system includes audio signal expansion equipment audio mixers, feedback suppressors to avoid whistling, audio managers, professional power amplifiers and professional speakers and other equipment; with the digital and networked development of audio systems, conference audio systems will also become intelligent, integrated and remote. develop.)