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The sound equipment system must be set reasonably, so that the signal between various equipment will be more stable. Do you know how to set the input sensitivity of professional sound equipment? How much do you know about this? Next, we will give you a detailed summary, hoping to help you.

音響設(shè)備

Professional audio equipment

音響設(shè)備系統(tǒng)的信噪比(SNR)較差，通常會導(dǎo)致背景噪聲較高，使聽者厭煩，影響聲音的清晰度。在有效音頻信號接近背景噪聲的系統(tǒng)中，通常有太多的開銷余量。另一方面，低裕度的系統(tǒng)，即系統(tǒng)噪聲很低，信號接近失真，可能會導(dǎo)致系統(tǒng)過載，導(dǎo)致聲音失真，甚燒壞喇叭。如果有幾個音頻設(shè)備剪輯在同一個級別(聲音開始失真)或有類似的動態(tài)范圍，那么這樣的音頻系統(tǒng)可以稱為“即插即用”系統(tǒng)，但這種情況很罕見。

The signal-to-noise ratio (SNR) of professional audio equipment system is poor, which usually leads to high background noise, annoys the listener and affects the definition of sound. In a system where the effective audio signal is close to the background noise, there is usually too much overhead margin. On the other hand, the system with low margin, that is, the system noise is very low and the signal is close to distortion, which may lead to system overload, sound distortion and even burn out the horn. If several audio device clips are at the same level (the sound begins to distort) or have a similar dynamic range, such an audio system can be called a "plug and play" system, but this is rare.

還有一個問題。剛?cè)胄械恼{(diào)諧器往往誤以為輸入靈敏度控制器是功放上的音量旋鈕。為了從這個音響系統(tǒng)獲得更高的輸出電平，通常會將其調(diào)到大值，但結(jié)果是噪音增加。因此，輸入靈敏度應(yīng)該設(shè)置得足夠高，以確保功率放大器的輸出。

One more question. New tuners often mistakenly think that the input sensitivity controller is the volume knob on the power amplifier. In order to obtain a higher output level from this sound system, it is usually adjusted to a large value, but the result is increased noise. Therefore, the input sensitivity should be set high enough to ensure the output of the power amplifier.

音響設(shè)備的設(shè)置方法基于功率放大器的輸入靈敏度指示器。當(dāng)指示器開始顯示削波時，超過該點(diǎn)的任何增加都只會增加噪音。如果功率放大器控制旋鈕不加區(qū)別地置于大值，調(diào)音師需要衰減混音器或信號鏈中其他音頻設(shè)備中的信號，因此此操作會縮小輸出電平和背景噪聲之間的差距。因此，使用功率放大器旋鈕來補(bǔ)償混頻器的低電平信號只會增加噪聲問題。

The setting method of professional audio equipment is based on the input sensitivity indicator of power amplifier. When the indicator starts to show clipping, any increase beyond this point will only increase the noise. If the power amplifier control knob is set to a high value indiscriminately, the tuner needs to attenuate the signal in the mixer or other audio devices in the signal chain, so this operation will narrow the gap between the output level and the background noise. Therefore, using the power amplifier knob to compensate the low-level signal of the mixer will only increase the noise problem.

同時，如果房間內(nèi)的音量過大，應(yīng)該在功放旋鈕上控制音量，而不是降低混音器傳來的音頻信號，以保持良好的信噪比。

At the same time, if the volume in the room is too high, the volume should be controlled on the power amplifier knob instead of reducing the audio signal from the mixer to maintain a good signal-to-noise ratio.

綜上所述，可以看出，在整個音響系統(tǒng)的各個組成部分中，保持盡可能高的信號電平，是比較容易實(shí)現(xiàn)噪聲小，同時輸出大功率的方法。在任何情況下，功率放大器都應(yīng)該靜音或關(guān)閉，直到功率放大器之前的音響設(shè)備組件都獲得良好的增益架構(gòu)。

To sum up, it can be seen that in each component of the whole professional sound system, maintaining the signal level as high as possible is an easy method to achieve low noise and output high power at the same time. In any case, the power amplifier should be muted or turned off until the professional audio equipment components before the power amplifier get a good gain architecture.