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The Application of Automatic Gain Control to Audio System

應用於音源系統的自動增益控制

摘要


本論文中,簡短的介紹了,使用一個AD633乘法器和三個AD844運算放大器,設計兩個不同類型的自動增益控制(AGC)電路,可以自動調整增益放大器,獲得一個穩定的數值。當輸入的信號變強,在AGC電路將減少增益放大器。反之,當為輸入信號削弱,AGC的電路會增加增益放大器。由AGC電路實驗結果得知這項研究結果也將得到更好的回饋的反應時間及防止增益放大器,因分子為零而造成放大無限大的對策。

並列摘要


The objective of this brief presents the implementation, using an AD633 multiplier and three AD844 operational amplifiers, of two different kinds of Automatic Gain Control (AGC) circuits which can adjust the gain of an amplifier to a stable value. As the input signal strengthens, the AGC circuits will decrease the gain of the amplifier. On the contrary, as the input signal weakens, the AGC circuits will increase the gain of the amplifier. Experimental results form two different kinds of AGC circuits, we can know this research will also improve feedback response time and prevent Af from approaching infinity as the denominator of Af tends to zero. (Af is the gain of the feedback amplifier.).

被引用紀錄


Cabrera, P. C. (2009). 應用於麥克風自動增益控制放 大器之電路設計 [master's thesis, Chung Yuan Christian University]. Airiti Library. https://doi.org/10.6840/cycu200901106

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