Post-production audio encompasses the refining and enhancement of audio elements for films or other media after the initial recording phase. This stage involves tasks such as dialogue editing, sound effects creation, music composition, and final audio mixing.

Mixing 2.0 refers to stereo mixing, where audio is balanced and manipulated for playback through two channels: left and right. This format is commonly used for television broadcasts, online streaming, and some theatrical releases. Stereo mixing aims to create a sense of depth and directionality within the stereo field, enhancing the overall audio experience.

On the other hand, mixing 5.1 involves surround sound mixing, utilizing six channels: front left, front center, front right, surround left, surround right, and a subwoofer channel for low-frequency effects (LFE). This format is prevalent in theatrical releases, Blu-ray discs, and high-end home theater systems. Surround sound mixing provides a more immersive audio experience by positioning sound elements around the listener, creating spatial realism and depth.

In both stereo and surround sound mixing, audio engineers meticulously balance and blend dialogue, music, sound effects, and other audio elements to achieve a cohesive and impactful final audio mix that enhances the storytelling and overall viewing experience.