Improvement in audio quality by altering the frequency feature is done through:

(A) erasing

(B) Correcting

(C) equalisation

(D) wiping

Correct Ans: (C)

Explanation:-

The correct answer is (C) Equalisation.

Explanation:

Equalisation (EQ) adjusts the balance between frequency components of an audio signal to improve its quality. It achieves this by boosting or cutting specific frequency ranges, such as bass, midrange, or treble, based on the desired output. Audio engineers use it to enhance vocal clarity, reduce unwanted noise, and create a balanced mix.

In music production, this makes instruments sound more distinct by reducing frequency overlaps. In live sound, it prevents feedback and ensures clear communication. Engineers typically perform equalisation using tools like graphic, parametric, and shelving equalizers.

This process tailors audio to specific playback environments, ensuring clear and pleasing sound for the listener. Industries such as broadcasting, music production, film, and television rely on it to deliver polished and professional audio.