goertzel_state_t Struct Reference

Data Fields
int	chunky
int	fac
int	v2
int	v3

Detailed Description

Definition at line 256 of file dsp.c.

Field Documentation

chunky

int chunky

v2 and v3 power of two exponent to keep value in int range

Definition at line 262 of file dsp.c.

Referenced by goertzel_init(), goertzel_reset(), goertzel_result(), and goertzel_sample().

fac

int fac

15 bit fixed point goertzel coefficient = 2 * cos(2 * pi * freq / sample_rate)

Definition at line 264 of file dsp.c.

Referenced by goertzel_init(), goertzel_result(), and goertzel_sample().

v2

int v2

The previous previous sample calculation (No binary point just plain int)

Definition at line 258 of file dsp.c.

Referenced by __ast_dsp_call_progress(), ast_dsp_reset(), goertzel_init(), goertzel_reset(), goertzel_result(), and goertzel_sample().

v3

int v3

The previous sample calculation (No binary point just plain int)

Definition at line 260 of file dsp.c.

Referenced by __ast_dsp_call_progress(), ast_dsp_reset(), goertzel_init(), goertzel_reset(), goertzel_result(), and goertzel_sample().

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

• dsp.c