To accomplish this, Audio Hijack is used to pull in audio from the mic and adjust its signal. Using a combination of Audio Hijack and Loopback, you can improve your audio, then send it to others with calling services like Zoom, Skype, FaceTime, and more.
Whether you have an ultra high-quality microphone connected to your Mac, or you're using the tiny built-in input, audio effects can enhance the sound of your voice.