This is the handoff point for highpass filter. Callers fill cutoff_hz, sample_rate, alpha, prev_input before passing it on; consumers read the values during the operation and return ownership only where the member contract explicitly says they do. More...

#include <include/ascii-chat/audio/mixer.h>

Data Fields
float	cutoff_hz
	Cutoff frequency in Hz (frequencies above this are attenuated).
float	sample_rate
	Sample rate in Hz (set during initialization).
float	alpha
	Filter coefficient alpha (calculated from cutoff_hz).
float	prev_output
	Previous output sample (filter state).

Detailed Description

This is the handoff point for highpass filter. Callers fill cutoff_hz, sample_rate, alpha, prev_input before passing it on; consumers read the values during the operation and return ownership only where the member contract explicitly says they do.

lowpass filter keeps the values that move through the subsystem: cutoff_hz, sample_rate, alpha, prev_output. Some members are pointers into caller- or subsystem-owned memory, so lifetime follows the API that populated them rather than the struct copy itself.

Low-pass filter state

First-order IIR low-pass filter for removing high-frequency noise (hiss, electronic interference) while preserving voice clarity. Combined with high-pass filter creates voice-focused band-pass effect.

Definition at line 247 of file mixer.h.

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

mixer.h

Data Fields

Detailed Description