The difference between professional audio and civil audio technology

The acoustic characteristics of professional audio must not only meet the requirements of the national standards for acoustic characteristics, but also the requirements of subjective listening, because the acoustic characteristics cannot fully reflect the actual sound effect, and the quality of the sound is ultimately determined by the subjective listening feeling of the person It was decided that in the acoustic design, the electro-acoustic and acoustic design should be well coordinated to meet the following subjective listening requirements: appropriate loudness.

Loudness is the perception of actual listening intensity, which is directly related to the maximum sound pressure level index of the sound reinforcement system. For performances, only enough loudness can be achieved in order to fully express the sound effect. The output power of the system and the placement of the speakers will directly determine the loudness status of the listening area: high definition.

When used as a speech, the clarity of the language must be ensured. If people cannot hear the speaker’s language clearly, it will affect the effect of the speech. Therefore, in the design of the electro-acoustic system, we must fully consider improving the clarity of speech: sufficient fullness.


1. Both are constantly seeking to achieve the best sound effects.

Second, they all need to use audio equipment such as mixing and amplifying information processing (such as balanced audio mixing effects, etc.), power amplifiers, speakers, and various audio sources.

3. The system is stable and reliable, achieving a better performance-price ratio

Fourth, the listening effect is not only related to the performance of the system equipment, but also closely related to the listening environment (sound-building conditions), so all need to care about the sound-building conditions.


Due to different service areas, service objects and usage functions, they also have great differences:

1. The service area of ​​civil audio is generally less than 50M2, and the service targets are family members, relatives and friends with a small number of people. Therefore, the output power of the power amplifier is required to be small, and the power of the speaker is also small. I don’t care much about the index characteristics such as pressure sensitivity), pointing characteristics, loud sound pressure level, etc. In order to pursue high sound quality, I don’t hesitate to spend money (especially the HIFI system with fever).

The service area of ​​professional audio is very large. The number of service targets ranges from hundreds to tens of thousands. Therefore, the efficiency and cost of the system are particularly considered, and higher requirements are placed on the technical characteristics of the speakers. The cost of the system can achieve good sound effects and low operating costs. It must be “good horses” and “less horses eat grass.”

2. Professional audio is widely used in theaters, cinemas, hotels, conference centers, sports competitions, music plazas, entertainment centers, convention and exhibition centers, government agencies, schools, airports, ports, stations, subways, and military barracks, etc., with different functions and different venue shapes and acoustic characteristics Similarly, the system design must be adapted to local conditions. There is no universal system supporting plan. The civilian audio system uses a single object, and can adopt a universal supporting model, which is simple to use.

3. Professional audio must be adapted to local conditions and carefully considered the system sound field design (speaker layout) in order to obtain a good acoustic effect.


4. Professional audio systems must design different signal processing methods and signal transmission channels according to their use functions.

5. Due to the large service area of ​​professional audio, the importance of sound construction conditions is more prominent. The relationship between electroacoustic systems and sound construction conditions is the relationship between cars and highways.

6. Civil audio is mainly a sound source program replay system. Professional audio has both program source replay function and microphone sound reinforcement function. How to prevent acoustic feedback whistling and improve system sound transmission gain in a sound reinforcement system is one Important issue.

7. Professional audio must also carefully consider the connection and interconnection of professional lighting systems, video systems (projectors and video recording systems), communication systems and fire alarm systems (emergency broadcast) and other related systems.

Post time: Dec-07-2020
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