24. The method according to claim 17 , further including processing the audio signal to determine acoustic properties of a room for adjusting settings of the speech recognition unit.
17. A method, comprising: receiving with a speech recognition unit a first control signal comprising a radio signal from a wireless first mobile device associated with a first user, wherein the first control signal is unrelated to speech of the first user; receiving a first speech signal from the first user associated with the first mobile device; receiving an audio signal from the first mobile device and determining a distance of the first user by measuring a difference in transmission time between the radio signal and the audio signal; and identifying, using a computer processor, the first user from the first control signal and configuring speech settings for speech recognition of speech by the first user based on the identity of the first user and the determined distance.