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The difference between public broadcasting and professional audio

source:Industry News release time:2022-12-16 Hits:     Popular:Brand bar audio wholesale

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  Compared with civil (home) audio, PUBLIC ADDRESS is also a professional audio. But what we usually call PROFESSIONAL AUDIO refers specifically to stage (performance) audio. And public broadcasting is not the same as this kind of sound.

  Public broadcasting is a broadcasting that serves the public within a limited (but will be quite large) scope. Under conventional circumstances, public broadcast signals are transmitted through broadcast lines arranged in the broadcast service area, usually a one-way (downstream) cable broadcast. With the development of network technology, networked public broadcasting capable of two-way interaction is also being developed.

  Public broadcasting is usually set up in institutions, military units, enterprises, schools, communities, buildings, supermarkets and various venues. It is used to release news and internal information, release schedule signals, provide background music and be used for paging (such as broadcasting). Tracing) and forcibly inserting emergency broadcasts of catastrophic events, etc.

  Public broadcasting is also used for wireless transmission, but it is not mainstream.

  A public address system must be equipped with at least the following links: broadcasting speakers, broadcasting power amplifiers, microphones (and other audio source equipment). A simple system is shown in Figure 1, where the broadcast microphone has priority, that is, the microphone signal can actively cover other audio sources.

  Therefore, public broadcasting and general professional audio are still fundamentally different.

  Analysis of Eight Difficult Problems in Professional Audio Engineering

  In modern cities, it can be said that there are stereos where there are people. Night venues such as KTV, karaoke halls, bars, and discos are the most prominent representatives. Many technicians will encounter various problems when doing these sound projects, so the following is an analysis of the eight most common types of professional sound projects. Difficult Problems.

  1. Preface

  Assuming that the pre-planning of a professional audio project is in place, then there is generally no problem with the construction according to the plan. The problem lies in the debugging stage of the audio equipment, or some small problems that appear after use. There are many problems sometimes and sometimes, many tuner have encountered similar problems, most of the reason for this situation is that there are small omissions in the construction of professional audio engineering.

  2. Analysis of the 8 most common difficult problems in professional audio engineering

  1. The housing of audio equipment is charged

  It is necessary to use electricity for the operation of professional audio engineering, so when the audio equipment is debugged, the problem of electrification of the audio equipment shell is often present. Although this is not a big problem, it can damage the safety of the staff under severe conditions. This should not be ignored. of.

  2. Resonance and reaction in the sound field

  Although careful consideration has been made in the planning and construction of the sound project, it is inevitable that there will be incomplete and unpredictable areas, and the occurrence of this problem will inevitably affect the normal use and should be eliminated.

  3. The video pictures appear abnormally

  The video transmission distance in professional audio engineering is generally relatively long. Usually, the signal needs to be processed and distributed by video, and then sent to multiple display devices. There are also many intermediate links. Perhaps due to different reasons, the video image quality is not good. Affect the viewing effect, so it should be dealt with.

  4. Out of control of lights

  In professional audio engineering, there are sometimes uncoordinated lighting movements, uncontrolled or wrong actions. Although a slight loss of light control will not affect normal operation, if the problem is not dealt with for a long time, then this small problem is likely to be converted into a major problem. Moreover, any performance will not tolerate the phenomenon of out-of-control lighting.

  5. The sound of the wireless microphone is unstable

  Most professional audio projects are now equipped with wireless microphones, but due to improper installation and debugging, a proper number of them are not in good condition, especially in the performance venues. The working conditions of wireless microphones will directly affect the quality of the performance. Therefore, this is A problem that cannot be ignored.


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