1. A method of dialogue tracking for a plurality of audio signals including at least one dialogue audio signal carrying speech of a person with each audio signal being carried by an audio channel having an intended spatial location of the sound it carries relative to the person, the method comprising: receiving and detecting audio characteristics and determining a count of phonemes in a time window for at least one of the plurality of audio signals; identifying said audio characteristics which correspond to dialogue; determining dialogue tracking based on the intended spatial location of the audio channel carrying said at least one audio signal including; if said count of phonemes in the time window is taken from a non-dialogue channel and exceeds a first threshold, or if said count of phonemes in the time window is taken from a dialogue channel and is lower than a second threshold, performing an action consisting of one or more of a report, an alarm or a correction in response to said determining dialogue tracking.