Methods and apparatuses are provided for providing information. The ADSL receiver HPF 300 is implemented as an active RC filter to provide a single fifth-order Elliptic filter instead of the more conventional pair of third-order Elliptic filters. Application to smart cards, electronic badges or electronic labels. The magnetic field is orthogonal to a current passing through a conductive wire or conductive tape positioned on an axis of the assembly. When struck, the fork emits a sound dependent on the ball’s aim, force andor contact. Other aspects and implementations are contemplated.