Since the reform and opening up, China's professional sound reinforcement industry has gradually realized the leap from imitation to innovation and from labeling to creation after nearly 50 years of development. In major projects such as international conferences, G20 summits and CIIE, more and more places have seen the figure of China's sound reinforcement system brand, so that the world can hear the voice of China.
1. Overview of conference acoustic reinforcement system
Before the 1980s, due to the limitations of conditions, most of the information dissemination methods were based on language amplification. In other words, the voice of a person who speaks with an enlarged voice is amplified so that more people can hear it. After the 1990s, with the popularity of multimedia technology, and the large screen used as a display means in meetings, the playback of related audio and video materials has also entered people's vision.
Its application covers almost all the conference rooms, multi-function halls, command halls, foreign affairs reception, news release, technical forums, conference sound system, therefore, the conference sound reinforcement system has become an indispensable part of social development, and sometimes even become an important part of the entire project completion acceptance. There are many forms: talk, report, discussion, teleconferencing. Because the number of participants in the meeting is different, the size of the venue is different, indoor or outdoor, the functional requirements are different, the sound reinforcement system of the conference audio will also vary, and the shape is different. The function of the conference system is perfect, not only reflected in the auditorium environment, but also pay attention to the visual effects of decoration aesthetics, according to the environment of the venue, the pursuit of practical functional sound effects, both beautiful decorative effects, and good sound quality places, so that the audience can enjoy in spirit. Actual reliability is the key to a conference system. Therefore, the conference system should not only consider voice reinforcement, but also consider the playback and storage of sound and video signals.
With the development of The Times, people are increasingly pursuing the spirit of high level and high quality. Psychoacoustics tells us: People's cognition and appreciation of sound have a development process from low-level to chaotic and from sensibility to rationality. Listeners gradually establish external image and internal image of sound, which invisibly affect people's thinking and sound judgment in People's Daily life. These images stimulate listeners and their inner feelings stimulate them emotionally. Inner feelings give the listener emotional changes, which is the connotation of psychology.
Therefore, the development goal of conference acoustic reinforcement technology is not only to communicate the speaker's language content as a carrier, but also to convey the speaker's emotions. And make the speaker's language expressed by the emotion more closely transmitted to the listener, so that the voice of the speaker really achieve the effect of infecting the audience's emotions.
However, some people think that the technical difficulty and requirements of conference sound reinforcement are not high, and they think that it is simple and easy, and it has not received enough attention and research, and the venue shows universality and regularity. However, the sound reinforcement of the small sound reinforcement system commonly used in the actual conference sound system has its particularity and complexity, which implies great technical difficulty.