Active noise control using bass management

An active noise cancellation system for reducing, at a listening position, the power of a noise signal being radiated from a noise source to the listening position, the system comprising:

• an adaptive filter that receives a reference signal representing the noise signal, and provides a compensation signal;
• a bass management unit comprising an all-pass filter that receives the compensation signal and applies a variable phase shift as a function of frequency to the compensation signal to provide a phase shifted compensation signal;
• a first acoustic radiator that receives the phase shifted compensation signal and radiates audio indicative thereof to the listening position;
• and
• a second acoustic radiator that receives the compensation signal and radiates audio indicative thereof to the listening position;
• where transfer function characteristics from the input of the bass management system to the listening position approximately matches a desired transfer function.