Within the framework of a series of lectures for the GIBZ (Gewerblich-industrielles Bildungszentrum Zug) in a local cinema, Oswald Iten presented videographic examples of how contemporary narrative feature films create tension on the soundtrack. The focus was on audio phenomena that have a direct affective impact on the audience regardless whether they are part of music, sound design or human noises/speech. The following examples include swells (swelling and ebbing sound, or crescendo followed by diminuendo), ramps (continuous crescendo/swelling that abruptly breaks off), and glissandi (continuous raising or falling of pitch, in horror films often combined with ramps).
