表演舞臺(tái)是音響使用量比較大的場(chǎng)合之一，但是如果舞臺(tái)音響出了問題會(huì)直接導(dǎo)致演出無法順利進(jìn)行。因此，我們必須要知道舞臺(tái)音響可能會(huì)遇到一些什么樣的問題，下面
山東音響廠家為您講解。
The performance stage is one of the occasions with a large amount of audio. However, if there is a problem with the stage audio, it will directly lead to the failure of the performance. Therefore, we must know what problems the stage audio may encounter. The Shandong audio manufacturers will explain to you.
1 線路要按標(biāo)準(zhǔn)連接
(1) the line shall be connected according to the standard
常見系統(tǒng)交流干擾聲大就是線路連接工藝沒有做好造成的，還有系統(tǒng)中有平衡轉(zhuǎn)不平衡及不平衡轉(zhuǎn)平衡接法的務(wù)必要按標(biāo)準(zhǔn)連接，另外不要用劣質(zhì)接插件。
It is common that the loud AC interference of the system is caused by the failure of the line connection process. In addition, if there is a balanced to unbalanced and unbalanced to balanced connection method in the system, it must be connected according to the standard. In addition, do not use inferior connectors.
2 調(diào)整壓限器問題
(2) adjustment of pressure limiter
常見擺設(shè)根本不起作用和作用過度起反作用。前者可以將就用，后者則會(huì)帶來嚴(yán)重影響系統(tǒng)的動(dòng)態(tài)，表現(xiàn)為聲音發(fā)不出來，明顯表現(xiàn)是伴奏聲越強(qiáng)人聲就自然減弱使演唱者無所適從。
Common furnishings do not work at all and overreact. The former can make do with it, while the latter will have a serious impact on the dynamics of the system, which is manifested by the failure of the voice. The obvious performance is that the stronger the accompaniment sound, the voice will naturally weaken, making the singer at a loss.
3 信號(hào)分配的問題
(3) signal distribution
在聲場(chǎng)內(nèi)有幾組揚(yáng)聲器的情況下，常使用一臺(tái)均衡器將信號(hào)分配給多臺(tái)功放推動(dòng)音箱。但同時(shí)也可能是不同企業(yè)型號(hào)的功放和音箱混在一起使用，這樣分配信號(hào)帶來很多問題，阻抗是否匹配，電平分配是否均衡，音箱所獲得功率是否正常，以及用一臺(tái)均衡很難調(diào)整好聲場(chǎng)和音箱的頻率特性。
When there are several groups of speakers in the sound field, an equalizer is often used to distribute signals to multiple power amplifiers to drive the speakers. But at the same time, it may also be that power amplifiers of different brands and models are used together with speakers. This distribution of signals will bring many problems, such as whether the impedance is matched, whether the level distribution is balanced, whether the power obtained by the speakers is normal, and it is difficult to adjust the sound field and the frequency characteristics of the speakers with one equalizer.
4 效果回路處理
(4) effect loop treatment
應(yīng)該取推子的后置信號(hào)，避免效果不受控引起話筒嘯叫，返回有條件占用一路通道，這樣調(diào)試更方便。
The post signal of the fader should be taken to avoid the microphone howling caused by the uncontrolled effect, and the return conditionally occupies one channel, so that the debugging is more convenient.
5 處理低音信號(hào)
5) processing bass signal
一是不做電子分頻用全頻信號(hào)直接給功放推動(dòng)音箱，這樣有聲音也不于燒壞單元，但低單元發(fā)全頻聲音可想而知。如從系統(tǒng)中不恰當(dāng)位置取得信號(hào)也會(huì)給現(xiàn)場(chǎng)控制帶來不必要的麻煩。二是不知從系統(tǒng)何處提取低音信號(hào)做處理。
First, the full frequency signal is not used for electronic frequency division to directly drive the speaker box for the power amplifier, so that the unit will not be burnt if there is sound, but it is conceivable that the low unit will emit full frequency sound. If the signal is obtained from an inappropriate position in the system, it will also bring unnecessary trouble to the field control. Second, I don't know where to extract the bass signal from the system for processing.
6 系統(tǒng)電平問題
(6) system level problem
一是功放靈敏度控制開關(guān)打開不足，二是系統(tǒng)沒有做零電平調(diào)整。有時(shí)調(diào)音臺(tái)通道推一點(diǎn)點(diǎn)輸出已很大，這種情況會(huì)影響系統(tǒng)的動(dòng)態(tài)和失真度。
One is that the sensitivity control switch of the power amplifier is not opened enough; the other is that the system has not made zero level adjustment. Sometimes the output of the mixer channel is very large by pushing a little, which will affect the dynamics and distortion of the system.
7 音頻總是出現(xiàn)哼聲大的問題
(7) the audio always has the problem of loud hum
很多時(shí)候舞臺(tái)音響設(shè)備用著就會(huì)出現(xiàn)很多問題，就比如出現(xiàn)哼聲大的現(xiàn)象。那么哼聲其實(shí)是由于接地不良或不對(duì)，系統(tǒng)的設(shè)備不在同一路電網(wǎng)上，地電位嚴(yán)重相差引起的，而連接線的屏蔽層脫焊或屏蔽線接得不對(duì)而形成地電流回路，所以才會(huì)引起哼聲大的原因。針對(duì)這種原因引起的非常容易判斷，只要將兩個(gè)系統(tǒng)之間的連接信號(hào)線插頭從一個(gè)系統(tǒng)拔掉，哼聲就會(huì)消失不見的。
Many times, there will be many problems when professional stage audio equipment is used, such as loud hum. In fact, the hum is caused by poor or incorrect grounding, the equipment of the system is not on the same power grid, and the ground potential is seriously different, and the shielding layer of the connecting line is desoldered or the shielding wire is incorrectly connected to form the ground current loop, so the cause of the loud hum is caused. For this reason, it is very easy to judge. As long as the connecting signal line plug between the two systems is unplugged from one system, the hum will disappear.
8 話筒加入混響的問題
(8) reverberation of microphone
話筒加入混響后，聲音混：混響聲的低頻過多;在調(diào)音臺(tái)上對(duì)混響的低頻進(jìn)行適當(dāng)衰減。
After the microphone joins the reverberation, the sound is mixed: the low frequency of the reverberation sound is too much; Appropriately attenuate the low frequency of reverberation on the mixer.
9 音響系統(tǒng)聲音小，聽不到聲音
9. The sound system is low and cannot be heard
很多時(shí)候，你是否會(huì)遇到舞臺(tái)音響設(shè)備出現(xiàn)聲音小的現(xiàn)象，不管是音量調(diào)大調(diào)小都一樣。其實(shí)這是因?yàn)橐繇懺O(shè)備連接線短路，插頭、插座配合不好，連線虛焊等，在判定連接線沒有問題后再懷疑設(shè)備，檢查是那一臺(tái)設(shè)備有了故障，然后再更換設(shè)備。如聲音小還伴隨聲場(chǎng)嚴(yán)重不均勻則應(yīng)考慮揚(yáng)聲器的相位是否接錯(cuò)。因?yàn)檫B接線的對(duì)錯(cuò)，關(guān)系到音量的傳輸以及大小等等的因素。
Many times, you will encounter the phenomenon that professional stage audio equipment has low sound, no matter whether the volume is turned up or down. In fact, this is because the connecting wires of the audio equipment are short circuited, the plugs and sockets are not well matched, and the wires are poorly welded. After determining that the connecting wires are OK, suspect the equipment, check which equipment is faulty, and then replace the equipment. If the sound is small and the sound field is seriously uneven, it shall be considered whether the phase of the speaker is connected incorrectly. Because the right or wrong connection line is related to the transmission and size of the volume.
舞臺(tái)音響的好與壞關(guān)系著一場(chǎng)演出的效果，所以很多時(shí)候需要正確去使用它們。那么對(duì)于舞臺(tái)音響設(shè)備，遇到故障問題是必不可免的，要并及時(shí)采取有效的手段來防止或解決這些問題的出現(xiàn)。更多信息獲取就來我們網(wǎng)站
http://m.74seba.com吧。
The sound quality of the stage is related to the effect of a performance, so it is necessary to use them correctly. So for professional stage audio equipment, it is inevitable to encounter fault problems, and effective measures should be taken in time to prevent or solve these problems. For more information, please visit our website http://m.74seba.com Right.
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