function dcremove(E1 &&, double, double) biquad¶

template <typename E1, typename T = flt_type<expression_value_type<E1>>>
KFR_INTRINSIC expression_iir<1, T, E1> dcremove(E1&& e1, double cutoff_hz, double fs_hz)

Applies a DC removal filter to the given input expression.

This function designs a 2nd order Butterworth high-pass filter to remove the DC component from the input signal. The filter is implemented as a single biquad section with a cutoff frequency specified by cutoff_hz.

Template parameters

T	The data type used for the filter coefficients.
E1	The type of the input expression.

Parameters

e1	The input expression to be filtered.
cutoff_hz	The cutoff frequency of the high-pass filter in Hz.
fs_hz	The sampling frequency of the input signal in Hz.

Returns

An expression representing the filtered signal.