Sounds in Media.

There are many sound techniques in media,
Firstly, there is diegetic sound, sound whose source is visible on the screen or whose source is implied to be present by the action of the film for example if we are in a bedroom scene and an individual is playing music, a shot will be taken of the cd player from which is the sounds source. On the contrary Digetic sound can be either on screen or off screen depending on whatever its source is within the frame or outside the frame; if we were to hear a door bell or a Television, although it isn't in shot it is diegetic as it is still possible. Another term for diegetic sound is actual sound

In contrast to this, there is non diegetic sound. This is sound whose source is neither visible on the screen nor has been implied to be present in the action. For example, narrator's commentary or voice overs, sound effects which are added for the dramatic effect and also mood/ atmospheric music. The difference between diegetic or non-diegetic sound are emphasised film viewing and listening. We know of that certain sounds are represented as coming from the screen, or story. while others are represented as coming from outside the space of the story events. A play with diegetic and non-diegetic conventions can be used to create ambiguity (horror), which is most like what we will be doing when creating our thrillers.

Furthermore, there is parallel sound,Parallel sound describes the condition where audio and visual effects match, not in synchronity, but in tone and mood. It is "parallel" with what happens on the film, for example if something emotional is happening, emotional music, most likely minor chords. I think the majority of our thriller will contain this. May also be called synchronous sound.
In addition to this there is contrapuntal sound,Contrapuntal sound is where the sounds or music used contrast with the film; sound that does not fit in with the events happening.  The example we were shown done this technique very well, it was Trainspotting, the scene where Ewan McGregor is talking of drugs etc, and the music being played is triumphant orchestral music. Which completely doesn't fit, but it gives a very unique and clever effect for example it makes you feel as if he thinks what he is doing is good and triumphant.

Lastly, sound bridges are when the scene begins with the carry-over sound from the previous scene before the new sound begins.

We could use  many of these within our thriller as I think it would create confusion and disorientate the audience.