Audio Mixer Circuit Design
University of Washington, Seattle
06/2019 - 08/2019
Keywords: Circuit design, RLC circuit, Bandpass filters, Op Amps, Microphones, Buffer, Function generator, Oscilloscope, SPICE
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Descriptions
We designed an audio mixer circuit from stratch. It picks up an audio from a AUX cable and another from a microphone. The circuit contains a buffer circuit and a low pass filter to delay and filter out white noises from the microphone. It also includes three bandpass filters which control the magnitude of active zones in three distinctive frequencies, which are the bass, the mid, and the treble. During our implementation, we used function generators to simulate our audio signals, and we used oscilloscopes to check our filtered signals. We also used SPICE to simulate our circuits before implementing it on the real board.