This calculator is primarily designed to help design speech preamps.
A preamplifier (also called a preamplifier) refers to amplifying audio (such as AUX, MIC) signals to the input range that the power amplifier can accept. There are two functions of the preamplifier: one is to select the desired source signal. And amplified to the rated level; the second is to carry out a variety of sound quality control to beautify the sound. The basic components of the preamplifier are: sound source selection, input amplification and sound quality control. The function of the source selection circuit is to select the desired source signal to be sent to the subsequent stage, and to turn off the other source channels. The function of the input amplifier is to source the signal. Zoom in to the rated level, usually around 1V. The function of the sound quality control is to control the frequency characteristics of the sound system to achieve high fidelity sound quality; or to modify and beautify the sound according to the listener's preference.
Please click "Show Circuit Diagram", refer to the corresponding input parameter of the schematic input box in the right input box and click "Start Calculation". The design results will be displayed on the spectrum diagram.
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