更新時間：2021-07-29
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音響設備該系統(tǒng)由多功能設備組成，音頻設備根據(jù)使用要求進行設計，選擇使用的設備，并根據(jù)設計要求連接和配置這些單獨的設備。完善的音頻設備，滿足您的設計需求。對于固定安裝系統(tǒng)，設備需要安裝在機柜中，所有系統(tǒng)連接都需要按照特定的標準和標準進行固定安裝。
Professional audio equipment the system is composed of multi-functional equipment. The audio equipment is designed according to the use requirements, the equipment used is selected, and these separate equipment are connected and configured according to the design requirements. Perfect audio equipment to meet your design needs. For the fixed installation system, the equipment needs to be installed in the cabinet, and all system connections need to be fixed installed according to specific standards and standards.
對于音樂會、戶外演出等臨時安裝的移動系統(tǒng)，需要對設備和線纜采取有用的臨時固定措施，以確保安 全。連接和安裝音頻設備涉及許多工程挑戰(zhàn)，包括音頻控制室的設計和建造、音頻設備電纜的管道工程以及系統(tǒng)供電。
For temporarily installed mobile systems such as concerts and outdoor performances, it is necessary to take useful temporary fixing measures for equipment and cables to ensure safety. The connection and installation of audio equipment involves many engineering challenges, including the design and construction of audio control room, plumbing of audio equipment cables, and system power supply.
音響設備在信號傳輸中需要注意的問題：
Problems needing attention in signal transmission of professional audio equipment:
1.阻抗匹配。
Impedance matching 1.
信號輸入端口是信號輸出端口上的負載，阻抗匹配需要滿足的程度通常取決于信號輸出設備的設計要求。為了優(yōu)化音頻信號的傳輸狀態(tài)，信號輸入接口的阻抗需要滿足信號源輸出接口對負載的阻抗匹配要求。否則會影響音響設備的工作狀態(tài)，造成輸出信號失真。
The signal input port is the load on the signal output port. The degree of impedance matching usually depends on the design requirements of the signal output equipment. In order to optimize the transmission state of audio signal, the impedance of signal input interface needs to meet the impedance matching requirements of signal source output interface for load. Otherwise, the working state of audio equipment will be affected, resulting in output signal distortion.
在嚴重的情況下，存在損壞聲源設備的風險。理論上，當輸出阻抗等于負載阻抗時，信號傳輸效率高。輸出阻抗大于負載阻抗，大部分信號功率損失在信號輸出電路中，這顯然不利于信號傳輸。因此，音頻設備通常設計為輸入阻抗大于輸出阻抗。
In severe cases, there is a risk of damage to the sound source equipment. Theoretically, when the output impedance is equal to the load impedance, the signal transmission efficiency is high. The output impedance is greater than the load impedance, and most of the signal power loss is in the signal output circuit, which is obviously not conducive to signal transmission. Therefore, audio devices are usually designed so that the input impedance is greater than the output impedance.
一般來說，如果負載阻抗大于信號輸出端的阻抗，音頻設備的連接就可以正常工作。但是，音頻設備的輸入阻抗不能設計得過高或過低，過高會降低饋線性能，過低會降低頻率指標。
Generally speaking, if the load impedance is greater than the impedance of the signal output, the connection of audio equipment can work normally. However, the input impedance of audio equipment cannot be designed too high or too low. Too high will reduce the feeder performance, and too low will reduce the frequency index.
2.信號傳輸電平。
2. Signal transmission level.
音響設備連接的目的是傳輸信號，好的音頻信號傳輸條件是信號源的輸出電平需要大于輸入接口的靈敏度，否則信噪比指標會變差。音響設備上的線路輸入和輸出電路的增益通常要很平衡。換句話說，器件在輸出過程中不會擴大或衰減輸入或輸出信號電平并保持電平值。主要檢查液位控制裝置的調(diào)整。
The purpose of professional audio equipment connection is to transmit signals. A good audio signal transmission condition is that the output level of the signal source needs to be greater than the sensitivity of the input interface, otherwise the signal-to-noise ratio index will become worse. The gain of line input and output circuits on audio equipment is usually well balanced. In other words, the device does not expand or attenuate the input or output signal level and maintains the level value during the output process. Mainly check the adjustment of liquid level control device.
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