Why preemphasis circuits are used?

Preemphasis circuits are used to enhance the transmission quality of audio signals by boosting higher frequency components before transmission. This compensates for frequency-dependent losses in the communication medium, allowing for clearer reproduction of sound. By increasing the amplitude of higher frequencies, preemphasis helps to reduce distortion and improve signal-to-noise ratiOS, particularly in systems like FM broadcasting and audio recording. Ultimately, it ensures a more faithful representation of the original audio signal upon playback.