Radiocontrol in Switzerland
The first country to measure radio listening electronically
Matthias SteinmannSwiss Broadcasting CorporationManuel DahlerSwiss Broadcasting CorporationandKnut HackbarthIHA-GfM
TECHNOLOGY
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. 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 pattern, a sort of...