A sound-field visualiser, which utilises spherical harmonic signals as input; note this code is a remnant from the work conducted in [1]. More...

#include "powermap.h"
#include "saf.h"
#include "saf_externals.h"

Data Structures
struct	powermap_codecPars
	Contains variables for scanning grids, and beamforming. More...

struct	powermap_data
	Main structure for powermap. More...

Macros
#define	POWERMAP_FRAME_SIZE ( 1024 )
	Framesize, in time-domain samples.

#define	HOP_SIZE ( 128 )
	STFT hop size.

#define	HYBRID_BANDS ( HOP_SIZE + 5 )
	Number of frequency bands.

#define	TIME_SLOTS ( POWERMAP_FRAME_SIZE / HOP_SIZE )
	Number of STFT timeslots.

#define	NUM_DISP_SLOTS ( 2 )
	Number of display slots.

#define	MAX_COV_AVG_COEFF ( 0.45f )
	Maximum supported covariance averaging coefficient.

Typedefs
typedef POWERMAP_MODES	_Atomic_POWERMAP_MODES

Functions
void	powermap_setCodecStatus (void *const hPm, CODEC_STATUS newStatus)
	Sets codec status (see CODEC_STATUS enum)

void	powermap_initAna (void *const hPm)
	Intialises the codec variables, based on current global/user parameters.

void	powermap_initTFT (void *const hPm)
	Initialise the filterbank used by powermap.

Detailed Description

A sound-field visualiser, which utilises spherical harmonic signals as input; note this code is a remnant from the work conducted in [1].

See also: [1] McCormack, L., Delikaris-Manias, S. and Pulkki, V., 2017. Parametric acoustic camera for real-time sound capture, analysis and tracking. In Proceedings of the 20th International Conference on Digital Audio Effects (DAFx-17) (pp. 412-419)

Author: Leo McCormack

Date: 26.04.2016

License: ISC

Definition in file powermap_internal.h.

Macro Definition Documentation

◆ HOP_SIZE

#define HOP_SIZE ( 128 )

STFT hop size.

Definition at line 54 of file powermap_internal.h.

◆ HYBRID_BANDS

#define HYBRID_BANDS ( HOP_SIZE + 5 )

Number of frequency bands.

Definition at line 55 of file powermap_internal.h.

◆ MAX_COV_AVG_COEFF

#define MAX_COV_AVG_COEFF ( 0.45f )

Maximum supported covariance averaging coefficient.

Definition at line 58 of file powermap_internal.h.

◆ NUM_DISP_SLOTS

#define NUM_DISP_SLOTS ( 2 )

Number of display slots.

Definition at line 57 of file powermap_internal.h.

◆ POWERMAP_FRAME_SIZE

#define POWERMAP_FRAME_SIZE ( 1024 )

Framesize, in time-domain samples.

Definition at line 51 of file powermap_internal.h.

◆ TIME_SLOTS

#define TIME_SLOTS ( POWERMAP_FRAME_SIZE / HOP_SIZE )

Number of STFT timeslots.

Definition at line 56 of file powermap_internal.h.

Typedef Documentation

◆ _Atomic_POWERMAP_MODES

typedef POWERMAP_MODES _Atomic_POWERMAP_MODES

Definition at line 68 of file powermap_internal.h.

Function Documentation

◆ powermap_initAna()

void powermap_initAna ( void *const hPm )

Intialises the codec variables, based on current global/user parameters.

Definition at line 46 of file powermap_internal.c.

◆ powermap_initTFT()

void powermap_initTFT ( void *const hPm )

Initialise the filterbank used by powermap.

Note: Call this function before powermap_initAna()

Definition at line 127 of file powermap_internal.c.

◆ powermap_setCodecStatus()

void powermap_setCodecStatus	(	void *const	hPm,
		CODEC_STATUS	newStatus )

Sets codec status (see CODEC_STATUS enum)

Definition at line 35 of file powermap_internal.c.

Data Structures

Macros

Typedefs

Functions