revised previous paper

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Abstract
The project was to help students in designing an audio mixer able, to sum up, two audio signals from different sources and combine them to one signal that can be listened to. The two audio signal sources, in this case, were the microphones and music from a mobile phone. The maximum and minimum gain allowed by the music signal was computed as 40- and 9.69-Volts peak to peak. On the other hand, the maximum and minimum gains within with a microphone could be operated to achieve the desired output was 95- and 82.75-Volts peak-to-peak. The cutoff frequency determined from the experiment for both the music and microphone were 100 kHz and 54 kHz respectively. It was also noted at the end of the test that the graph displayed a curve with a polynomial characteristic and attained the optimal peak value. Despite a few challenges experienced during the experiment and the complexity involved in the designing the circuit; high precision was observed. In the end, a mixer with the ability to sum up two audio signals was designed, and a music source and microphone signals were successfully tested on the mixer.
Keywords: mixer, signal, music, microphones, maximum, minimum, cutoff frequency
Lab Report: Music and Microphone Mixer
Introduction
The overall aim of the design project was for students to come up with a music and microphone mixer circuit that can support both signal input from the music source and the microphones and…