source:Industry News release time:2021-12-20 Hits: Popular:Brand bar audio wholesale
The audio equipment in the security equipment increases the use of audio processors, which not only reduces the peak level, but also increases the average modulation degree, and can also increase the sideband wave power to increase the advantage of loudness.
In addition, there are the following four better influences:
How to make the audio processor more reasonable to show its advantages?
1. It can solve the problem of large program level difference caused by recording, exchange, different program content and using different recording and playback equipment, which is difficult to solve well when manually adjusting the program level manually.
2. It creates conditions for establishing a sound volume balance between language programs and music programs.
3. It can amplify a certain amount of weak signals at the low tide of the program to prevent them from being overwhelmed by noise components. Generally, the level value of the high-frequency components in the program is low, and can be improved after processing. The high-frequency components not only determine the clarity of the program, but also have a psychological and physiological complex relationship with the loudness. The increase makes the audience feel that the loudness has also increased.
4. Stereo broadcasting, whose coverage radius is about half that of mono broadcasting at the same power level. After the audio processor (sound effector) is used, the received carrier field strength is slightly lower due to the increase of sideband wave power. It is also possible to receive higher-quality signals where required, which expands the coverage area.
How to make the audio processor (sound effector) more reasonable to show its advantages?
The average power of the processed music is 8.2dB higher than that of the pre-processed music. Comparing it with the ordinary limiter with 15dB compression, the value obtained is 5.9dB, which is actually equivalent to an increase of 4 times the transmit power. Using an audio processor to increase the coverage area can save a lot of electricity, equipment investment, and maintenance costs compared to other methods. It is a very economical and feasible method. Of course, the audio processor should compress the program content in an appropriate amount. Excessive compression will damage the program content and affect the artistic effect of music. The combination of professional power amplifiers will make the stereo broadcast lose its due characteristics.
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