Emotion Recognition Using Short Time Speech Analysis - Emotional Engineering - page 92

Fig. 1 Concept of short time
analysis of utterance f(t)
experimental environment during the experiments, which is much more realistic
than experiments that were conducted with scripted speech. Natural speech is
dif ! cult to analyze but more suitable than scripted speech for validating the
robustness of an emotion analysis method.
2.1 Experimental Procedure
The experimental setup is composed of one instructor, one coordinator, and two
subjects. The coordinator cooperates with the subjects in order to help better
stimulate their emotions. However, the coordinator pretends to be one of the par-
ticipants in the experiment to avoid being an extra obstruction for the subjects. The
stimulation process unfolds through conversations with the aid of videos. The steps
are demonstrated as follows, and the experiment is illustrated in Fig. 2 .
• The instructor sets up the experimental environment, such as a projector for the
videos and microphones for collecting the speech signals, and gives instructions
to the participants.
• The instructor also explains the steps to the participants, including the coordi-
nator, for freely providing their impressions related to the videos.