Sound Design is a broad term, but it was first used by Walter Murch when he was credited as a sound designer on Apocalypse Now.
The sound designer is the person in charge of the soundscape, determining how it should sound based on the concept. Its essence lies in the creation and manipulation of audio recordings that complement the story and enhance the overall sound, adding excitement.
Sound in films is a big 'illusion' that helps enhance the story and create emotional tension. The production recordings are complemented with various different sounds that help create a sonic image that plays along with the picture and the story. It's all designed according to the director's point of view.
If the project contains sound, it needs to have a concept built around the narrative to make it cohesive and more immersive.
Developing the concept requires planning for what, how, and when a sound or sounds should play. The sound designer needs to understand the narrative and emotional feelings while thinking what are the appropriate sounds for their purpose.
The sound designer is in charge of the sonic 'world' of the project. With the evolution of technology and the entertainment industry,
there's also a demand for sound, due to the amount of audiovisual projects.
Digital creations are getting more realistic and with very low latency of interaction, which enables advancements in the fields of augmented reality (AR) and virtual reality (VR).
In order to improve these solutions, making the experience more immersive is crucial. That's where sound plays a huge role, enhancing the experience.