更新時間：2021-06-11
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功放是音響設備重要的系統，它可以起到擴大音訊的作用，一般在使用音響的時候都會用到該系統，那么大家知道音響設備的攻放是如何擴大的嗎?對此了解多少呢?是不是不清楚呢?沒關系，接下來我們將為大家介紹一下，希望能夠幫助到大家。
Power amplifier is an important system of professional audio equipment, it can play the role of expanding the audio, generally in the use of audio will use the system, so do you know how to expand the audio equipment? How much do you know about this? Is it not clear? It doesn't matter. Next, we will introduce it to you, hoping to help you.
音響系統的“訊源”不論是模擬或是數字形式，都是替無法自己產出音樂的音響系統接收或播放音樂內容的區塊，有了訊源播放或接收音樂訊號我們才能從音響系統聽到音樂。不過訊源電路或器材是無法提供足夠的功率來驅動揚聲器甚或是耳機的，家庭ktv音響廠家所以音響系統還需要功放才能驅動揚聲裝置發出聲音。
The "source" of the sound system, whether in analog or digital form, is a block that can receive or play music content for the sound system that cannot produce music by itself. With the source playing or receiving music signals, we can hear music from the sound system. However, the source circuit or equipment can not provide enough power to drive the speaker or even the headset, so the home KTV audio manufacturers still need power amplifier to drive the sound device to produce sound.
顧名思義“功放”就是把訊源的訊號擴大來驅動揚聲裝置，家庭ktv音響不過實際上功放執行的工作并不是將訊號擴大，得更明白一點就是訊號本身其實是無法擴大的。音響設備的規格我們可以透過被動形式的衰減組件如電阻等來損耗原本訊號的強度，但事實上卻沒有任何組件甚或電路能夠去放大訊號。
As the name suggests, "power amplifier" is to expand the signal of the source to drive the loudspeaker device. But in fact, the work of power amplifier is not to expand the signal. It is more clear that the signal itself cannot be expanded. According to the specifications of professional audio equipment, we can use passive attenuation components such as resistors to reduce the strength of the original signal, but in fact, no component or circuit can amplify the signal.
音響設備
Professional audio equipment
說來擴大電路真的工作方式并不是直接放大訊號，而是依照原來的訊號拷貝出更高電壓或更大電流的訊號，端看電路的設定來決定訊號輸出的情況。一般來說要驅動揚聲器負載的條件，訊源訊號的電壓與電流都要增強，家庭ktv音響特點功放的電路設計上就會在訊號拷貝時將電壓與電流兩方面予以提升，電子學上稱之為“增益”。
In other words, the real working mode of the amplifier is not to amplify the signal directly, but to copy the signal with higher voltage or current according to the original signal. The output of the signal depends on the setting of the circuit. Generally speaking, in order to drive the load of the loudspeaker, the voltage and current of the source signal should be enhanced. In the circuit design of the home KTV audio characteristic power amplifier, the voltage and current will be improved when the signal is copied, which is called "gain" in electronics.
不過為了避免讓電路與組件在太嚴苛的條件下工作以獲得更好的工作性能，諸如低失真、低噪聲等結果，通常會將電壓增益與電流增益電路分開制作。此外諸如訊源的選擇、音量控制與高低音音質控制等功放的常見操作功能，都會規劃在電壓增益電路的區塊;因為音樂訊號在此低電流的階段進行處理，會比在大電流的情況之下要來得效果更好成本也更低。
However, in order to avoid the circuit and components working in too harsh conditions to obtain better performance, such as low distortion, low noise and other results, voltage gain and current gain circuits are usually made separately. In addition, the common operation functions of power amplifier, such as source selection, volume control and high and low tone quality control, will be planned in the voltage gain circuit block; Because the music signal processing in this low current stage will be better than in the case of high current, and the cost is lower.
音響設備的攻放是想要擴大音響訊號，要控制好音響的音量和音質，規劃好電路的設置，做好相應的處理，減少使用成本，大家清楚了嗎?如若想要在家庭內安裝音響設備，可以和山東和聲智能科技有限公司交流交流。
The purpose of professional audio equipment is to expand the sound signal, control the sound volume and quality, plan the circuit settings, do the corresponding processing, and reduce the cost of use. Are you clear? If you want to install audio equipment in your home, you can communicate with Shandong harmony Intelligent Technology Co., Ltd.
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