pulp::signal::DcBlocker< T > Class Template Reference

One-pole DC blocker (first-order high-pass). More...

#include <dc_blocker.hpp>

Public Member Functions
	DcBlocker ()=default
void	set_pole (T pole)
	Set the pole position (typically 0.99..0.999).
void	reset ()
	Clear filter state. Call between unrelated streams.
T	process (T x)
	Process one sample.
void	process (T *samples, int n)
	Process a block in-place.

Detailed Description

template<typename T = float>
class pulp::signal::DcBlocker< T >

One-pole DC blocker (first-order high-pass).

Removes DC offset and very-low-frequency drift from an audio stream without measurably altering the audio band.

RT contract: set_pole(), reset(), and process paths are scalar-only and allocate no memory.

Transfer function: H(z) = (1 - z^-1) / (1 - p * z^-1) where p is the pole position (default 0.995 → ~3.5 Hz corner at 44.1 kHz).

pulp::signal::DcBlocker blocker;
blocker.set_pole(0.995f);
for (int i = 0; i < num_samples; ++i)
    output[i] = blocker.process(input[i]);

For a more aggressive corner frequency, use a higher-order HPF biquad instead — this primitive is intentionally minimal.

Constructor & Destructor Documentation

DcBlocker()

template<typename T = float>

pulp::signal::DcBlocker< T >::DcBlocker ( )

default

Member Function Documentation

process() [1/2]

template<typename T = float>

void pulp::signal::DcBlocker< T >::process ( T * samples, int n )

inline

Process a block in-place.

process() [2/2]

template<typename T = float>

T pulp::signal::DcBlocker< T >::process ( T x )

inline

Process one sample.

reset()

template<typename T = float>

void pulp::signal::DcBlocker< T >::reset ( )

inline

Clear filter state. Call between unrelated streams.

set_pole()

template<typename T = float>

void pulp::signal::DcBlocker< T >::set_pole ( T pole )

inline

Set the pole position (typically 0.99..0.999).

Higher values give a lower corner frequency. At 44.1 kHz: 0.995 ≈ 3.5 Hz, 0.999 ≈ 0.7 Hz.

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The documentation for this class was generated from the following file:

• /home/runner/work/pulp/pulp/core/signal/include/pulp/signal/dc_blocker.hpp