OBD:OSBD/OSIm

Minimal data, just to get the page started.

Offset	Type	Raw Hex	Value	Description
0x00	4cc	6D 49 53 4F	OSIm	Oni Sound Impulse
0x04	int32	68 00 00 00	104	104 bytes; size of the part that follows
0x08	bool32	06 00 00 00	6	version (see below)
0x0C	char[32]	ac5lp1.aif		group name (reference to 06590-konoko_wakeup.grp.OSBD)
0x2C	int32	01 00 00 00	light	priority
0x30	float	00 00 20 41	10.	minimum volume distance
0x34	float	00 00 48 42	50.	maximum volume distance
0x38	float	00 00 B4 43	360.	minimum volume angle
0x3C	float	00 00 B4 43	360.	maximum volume angle
0x40	float	00 00 00 00	0.	unknown
0x44	int32	00 00 00 00	0	unknown (present for version 4 and above, default is 0)
0x48	char[32]	empty string		alternate impulse name (reference to another .imp.OSBD file) (present for version 4 and above, default is empty string)
0x68	float	00 00 00 00	0.	unknown (present for version 5 and above, default is 0)
0x6C	float	00 00 00 00	0.	unknown (present for version 6 and above, default is 0)
0x70	char[16]	filler		not used

Version

Just as for other OSBD, there have been several version of the binary format.

Over time, some fields that used to be hardcoded became customizeable on a group-per-group basis.

Thus, later versions include some extra fields as compared to earlier ones.

The above example belongs to the latest OSIm version encountered in Oni: 6.

Lower versions lack certain fields, and the following content is simply shifted backwards.

Versions of OSIm occurring in Oni: 3, 4, 5, 6.