3. The method according to claim 1 , wherein said determining step when performed for said random mode comprises: generating a random number; determining whether said generated random number is within a pre-defined range; checking, if the generated random number falls within said pre-defined range, whether said generated random number is less than a confirmation percentage parameter value; and performing a confirmation if the generated random number is within the pre-defined range and is less than the confirmation percentage parameter value.
4. The method according to claim 3 , wherein the confirmation percentage parameter value indicates an expected percentage of times that a speech recognition result is to be confirmed.