Schaltungsanordnung zur Frequenzgangbeeinflussung eines digitalen Audiosignals

摘要

For a digital circuit arrangement for influencing the frequency response of a digital audio signal as a function of frequency and/or amplitude, the input signal of the circuit arrangement is applied to a signal filter (3) having variable filter coefficients, whose output signal, after addition to the input signal of the circuit arrangement, represents the frequency response-influenced output signal of the circuit arrangement, and the coefficients for the signal filter (3) are selected in dependence on the output signal of a control circuit to which the output signal of the signal filter (3) is applied and which includes a control filter (7), a rectifier (8), a pulse shaper stage (9), a logarithmic means (12) and a circuit (6) determining the coefficients.