更新時(shí)間：2021-07-29
文章來源：http://www.r08sv.cn/
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音響設(shè)備該系統(tǒng)由多功能設(shè)備組成，音頻設(shè)備根據(jù)使用要求進(jìn)行設(shè)計(jì)，選擇使用的設(shè)備，并根據(jù)設(shè)計(jì)要求連接和配置這些單獨(dú)的設(shè)備。完善的音頻設(shè)備，滿足您的設(shè)計(jì)需求。對(duì)于固定安裝系統(tǒng)，設(shè)備需要安裝在機(jī)柜中，所有系統(tǒng)連接都需要按照特定的標(biāo)準(zhǔn)和標(biāo)準(zhǔn)進(jìn)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(duì)于音樂會(huì)、戶外演出等臨時(shí)安裝的移動(dòng)系統(tǒng)，需要對(duì)設(shè)備和線纜采取有用的臨時(shí)固定措施，以確保安 全。連接和安裝音頻設(shè)備涉及許多工程挑戰(zhàn)，包括音頻控制室的設(shè)計(jì)和建造、音頻設(shè)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(shè)備在信號(hào)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(hào)輸入端口是信號(hào)輸出端口上的負(fù)載，阻抗匹配需要滿足的程度通常取決于信號(hào)輸出設(shè)備的設(shè)計(jì)要求。為了優(yōu)化音頻信號(hào)的傳輸狀態(tài)，信號(hào)輸入接口的阻抗需要滿足信號(hào)源輸出接口對(duì)負(fù)載的阻抗匹配要求。否則會(huì)影響音響設(shè)備的工作狀態(tài)，造成輸出信號(hào)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(yán)重的情況下，存在損壞聲源設(shè)備的風(fēng)險(xiǎn)。理論上，當(dāng)輸出阻抗等于負(fù)載阻抗時(shí)，信號(hào)傳輸效率高。輸出阻抗大于負(fù)載阻抗，大部分信號(hào)功率損失在信號(hào)輸出電路中，這顯然不利于信號(hào)傳輸。因此，音頻設(shè)備通常設(shè)計(jì)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(fù)載阻抗大于信號(hào)輸出端的阻抗，音頻設(shè)備的連接就可以正常工作。但是，音頻設(shè)備的輸入阻抗不能設(shè)計(jì)得過高或過低，過高會(huì)降低饋線性能，過低會(huì)降低頻率指標(biāo)。
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(hào)傳輸電平。
2. Signal transmission level.
音響設(shè)備連接的目的是傳輸信號(hào)，好的音頻信號(hào)傳輸條件是信號(hào)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(biāo)會(huì)變差。音響設(shè)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(huì)擴(kuò)大或衰減輸入或輸出信號(hào)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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