The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "signals" appeared
2009-12-10 : Interview with De Tijd and L'Echo2006-03-15 : Interview with Der Standard, De Standaard, La Tribune, Süddeutsche Zeitung and L'Echo
2005-04-07 : Introductory statement with Q&A
2004-06-22 : Supply side economics and monetary policy
2004-05-06 : Introductory statement with Q&A
2004-04-01 : Introductory statement with Q&A