Voice trigger validator

A voice trigger validator comprising:

• a determination module operable to determine a time period between a voice trigger event and a start-of-speech event;
• wherein, when the time period exceeds a predetermined threshold, the voice trigger event is invalidated as a voice trigger and, when the time period does not exceed the predetermined threshold, the voice trigger event is validated as a voice trigger.

(canceled)

An automatic speech recognition system comprising an audio signal processing circuit for receiving an input signal derived from sound sensed by an acoustic sensor, the audio signal processing circuit comprising:

• a trigger phrase detection module for monitoring the input signal for at least one feature of a trigger phrase and outputting a trigger signal if one said feature is detected;
• wherein
• the trigger signal is ignored if a time interval between an occurrence of the at least one feature and an occurrence of a feature indicative of a start of speech contained in the input signal is greater than a threshold amount of time.

(canceled)

(canceled)

A voice trigger validation method comprising:

• determining a time period between a voice trigger event and a start-of-speech event;
• wherein, when the time period exceeds a predetermined threshold, the voice trigger event is invalidated as a voice trigger and, when the time period does not exceed the predetermined threshold, the voice trigger event is validated as a voice trigger.

An automatic speech recognition system comprising a voice trigger validator, the voice trigger validator comprising:

• a determination module operable to determine a time period between a voice trigger event and a start-of-speech event;
• wherein, when the time period exceeds a predetermined threshold, the voice trigger event is invalidated as a voice trigger and, when the time period does not exceed the predetermined threshold, the voice trigger event is validated as a voice trigger.