There can be two forms of scene design and sound design, real &surreal. For the real one, we can add some natural objects or decorations in the room, such as a clock, fireplace, etc. Eg. to make the emotion of leisure and happiness. We can add sounds and music, including clock ticking, fire crackling, and a piece of jazz music to build a warm environment.
Moreover, for sadness emotion, we may set up the scene as a rainy night with some sounds of the raindrop, footsteps, crying and so on.
And the sounds and scenes can both become abstract for the surreal expression. There can be some strings, shapes, etc., with low-frequency and electronic sounds to also express sadness. And for anger emotion, we can use high-frequency electronic sounds, screaming explosions, glass shattering and so on to render the feelings.
In addition, there are also other tactics and operations we can use to create immersion for players. First, we will use different footsteps for different environments (wooden floor, high-heel shoes, tile, etc.). Second, add different sounds for closing or opening the doors. For example, the sound of closing the door can be creaky and reverberate in a horrible environment.
Next, we will adjust the volume of each sound by considering the distance between the player and the object (spatial sounds). Finally, we are seeking more information and guidance about connecting Muti-channel sounds, such as 5.1 surround, in order to provide an immersive playing environment.