Radiocontrol In Switzerland
One year of experience with audiometers measuring radio listening
Matthias Steinmann Manuel DhlerSwiss Broadcasting Corporation andKnut HackbarthIHA-GfK
Introduction
The technological main issue of the Radiocontrol system consists of a wristwatch with an additional function. A built-in microphone regularly records the ambient sound around the test persons carrying the watch, i.e. at home, out of home, at work, etc., minute by minute (Figure 1). After an analog-digital conversion, a microchip inside the watch reduces the recorded short sound clips by a factor of 120. What is left is a digital sound...