The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "signal" appeared
2012-06-06 : Introductory statement to the press conference (with Q&A)2012-02-24 : Interview with Frankfurter Allgemeine Zeitung
2011-12-01 : Hearing before the Plenary of the European Parliament on the occasion of the adoption of the Resolution on the ECB's 2010 Annual Report