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Function iir

function iir(E1 &&, iir_params<T, filters>) dsp

template <size_t filters, typename T, typename E1>
KFR_FUNCTION expression_iir<filters, T, E1> iir(E1&& e1, iir_params<T, filters> params)

Returns a template expression that applies a biquad filter cascade to the input.

Template parameters
filters Number of cascaded biquad sections.
T Floating-point element type.
E1 Type of the input expression.
Parameters
e1 Input expression.
params Biquad coefficients (iir_params).

Fully qualified name: kfr::iir(E1 &&, iir_params<T, filters>)

Declared at dsp/biquad.hpp:572

Function iir

function iir(E1 &&, const iir_params<T, tag_dynamic_vector> &) dsp

template <typename T, typename E1>
KFR_FUNCTION expression_handle<T, 1> iir(E1&& e1, const iir_params<T, tag_dynamic_vector>& params)

Returns a template expression that applies a runtime-sized biquad cascade to the input.

The runtime section count is rounded up to the next power of two (bounded by maximum_biquad_count) and dispatched to the matching fixed-size specialization.

Template parameters
T Floating-point element type.
E1 Type of the input expression.
Parameters
e1 Input expression.
params Dynamic-size biquad coefficients.

Fully qualified name: kfr::iir(E1 &&, const iir_params<T, tag_dynamic_vector> &)

Declared at dsp/biquad.hpp:589

Function iir

function iir(E1 &&, std::reference_wrapper<iir_state<T, filters>>) dsp

template <size_t filters, typename T, typename E1>
KFR_FUNCTION expression_iir<filters, T, E1, true> iir(E1&& e1,
                                                      std::reference_wrapper<iir_state<T, filters>> state)

Returns a template expression that applies a biquad cascade using externally-owned state.

The state is held by reference (Stateless = true), allowing the caller to share or reset the filter state across multiple invocations.

Template parameters
filters Number of cascaded biquad sections.
T Floating-point element type.
E1 Type of the input expression.
Parameters
state Reference wrapper around an externally-owned iir_state.
e1 Input expression.

Fully qualified name: kfr::iir(E1 &&, std::reference_wrapper<iir_state<T, filters>>)

Declared at dsp/biquad.hpp:616

Function iir

function iir(E1 &&, const zpk &) dsp

template <typename T = fbase, typename E1>
KFR_FUNCTION expression_handle<T, 1> iir(E1&& e1, const zpk& params)

Applies an IIR filter (in ZPK form) to an input signal expression.

Template parameters
T Element type of the filter coefficients (default fbase).
E1 Input expression type.
Parameters
e1 Input signal expression.
params IIR filter coefficients in ZPK form.
Returns
Expression handle applying the biquad filter.

Fully qualified name: kfr::iir(E1 &&, const zpk &)

Declared at dsp/iir_design.hpp:340

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