Class expression_iir¶

`class` expression_iir<filters, T, E1, Stateless> dsp ¶

template <size_t filters, typename T, typename E1, bool Stateless = false>
struct expression_iir : expression_with_traits<E1> { … }

Template expression applying a cascade of biquad sections (look-ahead variant, with latency compensation).

Template parameters
filters	Number of cascaded biquad sections. The compensated latency is `filters - 1` samples.
T	Floating-point element type.
E1	Type of the wrapped input expression.
Stateless	If true, the state is held by reference (external ownership).

`typedef` value_type ¶

using value_type = T

Fully qualified name: kfr::expression_iir<filters, T, E1, Stateless>::value_type

Declared at dsp/biquad.hpp:383

`constructor` expression_iir<filters, T, E1, Stateless>(E1 &&, state_holder<iir_state<T, filters>, Stateless>) ¶

expression_iir(E1&& e1, state_holder<iir_state<T, filters>, Stateless> state)

Construct from an input expression and a state holder.

Parameters
e1	Input expression.
state	Filter state holder.

Fully qualified name: kfr::expression_iir<filters, T, E1, Stateless>::expression_iir<filters, T, E1, Stateless>(E1 &&, state_holder<iir_state<T, filters>, Stateless>)

Declared at dsp/biquad.hpp:390

`variable` state ¶

mutable state_holder<iir_state<T, filters>, Stateless> state

Fully qualified name: kfr::expression_iir<filters, T, E1, Stateless>::state

Declared at dsp/biquad.hpp:395

Fully qualified name: kfr::expression_iir<filters, T, E1, Stateless>

Declared at dsp/biquad.hpp:381

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Class expression_iir¶