Resonator for active noise attenuation system

An active noise attenuation system for an air induction assembly is operably connected to an engine that generates a low frequency noise having a noise profile defining a peak noise. The system has an air inlet duct housing (12) with an inlet (16) and an outlet (18) connected to the engine (19). A resonator (30) is supported by the housing and is positioned between a speaker assembly (20) and the engine to attenuate the peak noise resulting in an attenuated low frequency engine noise. A microphone (22) senses the attenuated low frequency engine noise and generates an attenuated low frequency engine noise signal. A controller (26) receives and phase shifts the signal and sends the signal to the speaker to generate a sound field to cancel or reduce the attenuated low frequency engine noise signal.