Evaluation of In-Car Communication Systems - Digital Signal Processing for In-Vehicle Systems and Safety - page 70

Fig. 5.2 Schematic communication in a passenger compartment
Fig. 5.3 Positioning of loudspeakers and microphones (With permission from SVOX)
of the results described in the remainder of this chapter are based on this system, we
will show some more details about that system in the next few sections.
To improve the communication, the speech of the talking passengers is recorded
by microphones and played back via those loudspeakers that are located close to the
listening passengers. The positions of the microphones and of the loudspeakers of
the system that we used for evaluation can be seen in Fig. 5.3 . Four microphones are
placed at the driver position; the loudspeakers for the rear seat passenger behind
him are placed in the doors and on the hat rack.