Diagetic, Non-Diagetic, Pleonistic and Contrapuntal

In the TV Drama Skins they use different sound effects to portray the teenagers. For example,
The Diegetic sound that is used is the alarm sound that wakes Tony up, in many cases young teenagers can relate to this as they use alarms to wake up. Also there is pleonistic sound of the church bell as it gets louder, this can represent Tony as being socially active as he may have been hung over from the previous night, that's why he hears the bell so loud. The non-diegetic sound would be the background music, the background music would appeal to teenagers therefore, representing Tony as a teen. Other diegetic sounds such as the sound of shoes when walking, radio music as it is within the seen however, the radio music turn from diegetic sound to pleonisitc sound as the music soon becomes louder. other Diegetic sounds in the scene would be the door knocking, toilet flushing and speech from the characters. Other pleonistic sounds such as the drilling noise becomes louder and the father shouting, when Tony starts to ring everyone, the audience can hear what the others are saying when Tony is on the phone, this represents the pleonistic sounds.

In the scene of Skins there was no scene of contrapuntal sounds.

CONTRAPUNTAL SOUND EXAMPLE: Sometimes when we are watching a film, we hear sound that
doesn’t seem to match what we are seeing. The most famous
example of this has to be in “Jaws” when we are watching scenes of
happy holiday makers on Amity Beach but we hear the ‘dur dur’
motif of the shark – a deep sinister and haunting sound that we
have, by this stage in the film, be conditioned to hear as a signal for
the imminent arrival of the man-eating shark. Thus, what we see
and what we hear DO NOT match. This is called CONTRAPUNTAL
SOUND. ‘Contrapuntal’ means ‘at a counterpoint to’. Some people
call this ‘asynchronous sound’ – as in NOT synchronous – that is not
in synch. It doesn’t matter which you use – use the one you’re
happiest with but stick with it – be consistent.
Source of example: http://www.scribd.com/doc/8332956/Sound-in-Film