AMR wideband data and definitions. More...

#include <stdint.h>
#include <stddef.h>

Macros
#define	LP_ORDER 16
	linear predictive coding filter order

#define	LP_ORDER_16k 20
	lpc filter order at 16kHz

#define	HB_FIR_SIZE 30
	amount of past data needed by HB filters

#define	UPS_FIR_SIZE 12
	upsampling filter size

#define	UPS_MEM_SIZE (2 * UPS_FIR_SIZE)

#define	MIN_ISF_SPACING (128.0 / 32768.0)
	minimum isf gap

#define	PRED_FACTOR (1.0 / 3.0)

#define	MIN_ENERGY -14.0
	initial innovation energy (dB)

#define	ENERGY_MEAN 30.0
	mean innovation energy (dB) in all modes

#define	PREEMPH_FAC 0.68
	factor used to de-emphasize synthesis

#define	AMRWB_SFR_SIZE 64
	samples per subframe at 12.8 kHz

#define	AMRWB_SFR_SIZE_16k 80
	samples per subframe at 16 kHz

#define	AMRWB_P_DELAY_MAX 231
	maximum pitch delay value

#define	AMRWB_P_DELAY_MIN 34

#define	AMR_BIT(field) (offsetof(AMRWBFrame, field))
	The index of a frame parameter.

#define	AMR_OF(frame_num, variable) AMR_BIT(subframe[frame_num].variable)
	The index of a subframe-specific parameter.

Typedefs
typedef struct AMRWBSubFrame	AMRWBSubFrame

typedef struct AMRWBFrame	AMRWBFrame

Enumerations
enum	Mode { MODE_4k75 = 0, MODE_5k15, MODE_5k9, MODE_6k7, MODE_7k4, MODE_7k95, MODE_10k2, MODE_12k2, MODE_DTX, N_MODES, NO_DATA = 15, MODE_6k60 = 0, MODE_8k85, MODE_12k65, MODE_14k25, MODE_15k85, MODE_18k25, MODE_19k85, MODE_23k05, MODE_23k85, MODE_SID, SP_LOST = 14, NO_DATA }

Detailed Description

AMR wideband data and definitions.

Enumeration Type Documentation

enum Mode