Cast
Human hearing is capable of detecting sound waves between 20 and 20.000 Hz. … merely a small fraction of the frequency spectrum. Most sounds around us go unnoticed.
Alix Wilton Regan (Acting)
17 November 2010
25 May 2016
2 January 2004
11 December 2008
21 February 2013
6 June 2012
26 June 2015
27 June 2012
6 August 2008
20 November 2021
1 November 2001
12 September 2013
15 July 2006
14 January 2010
7 December 2009
27 July 2011
26 November 2009
21 March 2013
17 October 2012
14 February 2002
19 May 2015