HARK version 1.2.0 Document : Source localization transfer function for LocalizeMUSIC

5.1.1 Source localization transfer function for LocalizeMUSIC

The source localization transfer function indicates a transfer function from a sound source to a microphone array and is expressed as a file of HGTF format with M2PG chunk. The source localization transfer function file is designated in the A_MATRIX property of LocalizeMUSIC . For details of usage, see LocalizeMUSIC . Table 5.5 shows definitions of M2PG. Further, the rows in memory of a multi-dimensional array are row major (same as in the C language).

Table 5.5: Definitions of M2PG sub chunk

Type	Value
char[4]	"M2PG"
int	Size of chunk,
	12+12$Nd$$Nr$+8$Nd$$Nr$$nmic$($Nfft$/2+1) [bytes]
short[2]	M2PG version (major, minor)
int	Number of elements in horizontal direction (Nd)
int	Number of elements of distance (Nr)
Vector3[Nd][Nr]	Coordinate of source position
`complex<float>` [Nd][Nr][nmic][Nfft/2+1]	Transfer function

This file is created from a file in the impulse response format using harktool , which is a support tool. Details of the creation method are described in Section 7.1.