ESE - 2.3L GTDI
WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
ESE is an audio system feature that enhances certain engine tones typically induced under wide open throttle or heavy part-throttle conditions. The system uses a DACMC and the audio system speakers.
The DACMC determines the engine tone to enhance based upon engine rotation speed data, engine torque data, and accelerator pedal position data from the PCM. The data from the PCM is processed and converted into an analog audio signal and output by the DACMC internal tone generator to the audio DSP module as fluctuating AC voltage. The audio DSP module sends the signal to the LHF, RHF, RHR, and LHR door midwoofer speakers as fluctuating AC voltage.