Markus Christoph

TL;DR: In this paper, an active noise control (ANC) system with a plurality of microphones and a multiplicity of loudspeakers is described. And the adaptive filter bank is configured to filter the reference signal to provide the loudspeaker signals as filtered signals.

TL;DR: In this paper, a system for actively reducing noise at a listening point, including an earphone housing, a transmitting transducer, a receiving transducers and a controller, is described.

TL;DR: Adaptive noise control systems and methods for reducing power of an acoustic noise signal radiated from a noise source to a listening position are disclosed in this paper, that include: providing an electrical reference signal correlated with the acoustic noise, filtering and multiplying the electrical output signal of the adaptive filter by the inverse of the gain factor to provide a second electrical compensation signal, the second gain factor being equal to 1 subtracted by the first gain factor.

TL;DR: In this paper, a method for determining an estimation of a secondary path transfer characteristic in an ANC system is described, which includes the positioning of a microphone array in a listening room symmetrically with respect to a desired listening position and reproducing at least one test signal using a loudspeaker arranged within the listening room to generate an acoustic signal.

TL;DR: In this paper, an active noise cancellation system includes an adaptive filter, a signal source, an acoustic actuator, a microphone, a secondary path and an estimation unit, where the adaptive filter receives a reference signal representing noise, and provides a compensation signal in response to the received reference signal.