| abstract |
The invention provides an application processor. The application processor includes a system bus, a host processor, a voice trigger system, and an interrupt pad. The host processor is electrically connected to the system bus. The voice trigger system is electrically connected to the system bus, and performs a voice trigger operation and issues a trigger event based on a trigger input signal provided by a trigger interface. The interruption pad receives a first interruption signal in response to a change in an operating environment from a low noise environment to a noisy environment, and a portion of the voice triggering system changes from an idle state in response to receiving the first interruption signal. To a normal state to perform the voice trigger operation. |