Patent ID: 7613311

Claim:
A digital crossover network, comprising: a first summer having a first input coupled to a signal input, a second input, and an output, the output of the first summer providing a fourth order high pass output of the crossover network; a first integrator element, comprising an input coupled to the output of the first summer and an output coupled to the second input of the first summer; a second integrator element, comprising an input coupled to the output of the first integrator element and an output coupled to the second input of the first summer; a third integrator element, comprising an input coupled to the output of the second integrator element; and an output coupled to the second input of the first summer; and a fourth integrator element, comprising an input coupled to the output of the third integrator element and an output coupled to the second input of the first summer, the output of the fourth integrator element comprising a fourth order low pass output of the crossover network, the crossover network having a crossover frequency dependent upon a constant c.