HARK version 1.1.0 Document : Separation matrix for GHDSS

5.1.3 Separation matrix for GHDSS

The separation matrix is expressed as a file in HGTF format with SM sub chunks. The sound source separation transfer function file is designated in the property INITW_FILENAME of GHDSS . Moreover, a separation matrix file is output by designating EXPORT_W_FILENAME, which appears when EXPORT_W is set to true. For details of usage, see GHDSS . Table 5.6 shows the definition of SM sub chunks. The rows in memory of a multi-dimensional array are row major (same as the case of C language).

Table 5.6: Definition of SM sub chunk

Type	Value
char[4]	“SM "
int	Size of chunk,
	8+12* $Ns$ +4+4* $Nf$ +8* $Ns$ * $nmic$ * $Nf$ [bytes]
short[2]	SM version (major, minor)
int	Source location quantity ( $Ns$ )
Vector3[Ns]	Coordinate of source position[m]
int	Number of frequency lines( $Nf$ )
int[Nf]	Map from index to frequency bin
`complex<float>` [Ns][nmic][Nf]	Separation matrix