src/cshellsynth/lowpass.h File Reference

#include <jack/jack.h>
#include <cshellsynth/atomic-types.h>
#include <cshellsynth/filter.h>

Go to the source code of this file.

Data Structures
struct	cs_lowpass_t
Defines
#define	cs_lowpass_destroy(cs_lowpass)   cs_filter_destroy((cs_filter_t *) (cs_lowpass))
#define	cs_lowpass_set_in(self, in)   cs_filter_set_in(self, in)
Functions
int	cs_lowpass_subclass_init (cs_lowpass_t *self, const char *client_name, jack_options_t flags, char *server_name)
int	cs_lowpass_init (cs_lowpass_t *self, const char *client_name, jack_options_t flags, char *server_name)
void	cs_lowpass_set_freq (cs_lowpass_t *self, float freq)
void	cs_lowpass_set_Q (cs_lowpass_t *self, float Q)
void	cs_lowpass_set_atten (cs_lowpass_t *self, float atten)

---

Detailed Description

Lowpass filter

Ruby version: Filters::Lowpass

H(s) = 1 / (s^2 + s/Q + 1)

---

Define Documentation

#define cs_lowpass_destroy

(

cs_lowpass

)

cs_filter_destroy((cs_filter_t *) (cs_lowpass))

Destroy lowpass filter

See cs_filter_destroy

#define cs_lowpass_set_in	(	self,
		in		)	cs_filter_set_in(self, in)

cs_filter_set_in

---

Function Documentation

int cs_lowpass_init	(	cs_lowpass_t *	self,
		const char *	client_name,
		jack_options_t	flags,
		char *	server_name
	)

Initialize lowpass filter

See cs_filter_init

void cs_lowpass_set_atten	(	cs_lowpass_t *	self,
		float	atten
	)

Set filter attenuation

You can either use atten or Q; not both. Q = w/2a

Ruby version: atten=

void cs_lowpass_set_freq	(	cs_lowpass_t *	self,
		float	freq
	)

Set center frequency

Ruby version: freq=

void cs_lowpass_set_Q	(	cs_lowpass_t *	self,
		float	Q
	)

Set filter Q

Ruby version: Q=

int cs_lowpass_subclass_init	(	cs_lowpass_t *	self,
		const char *	client_name,
		jack_options_t	flags,
		char *	server_name
	)

Initialize lowpass filter, for subclasses

See cs_filter_init