DDI format

UInt32			unknown1	(0)
UInt32			unknown2	(0)
FixedString[4]	chunk name
UInt32			unknown3	(0)
UInt32			unknown4	(version number?)
UInt32			unknown5	(0)
UInt32			unknown6	(3)

FixedString[4]	chunk name	("PHDC")
UInt32			total size of PHDC chunk (3927 in Bruno)
UInt32			unknown7		(4)
UInt32			phoneme count	(32)
for each phoneme
{
	FixedString[30]		name
	Byte				padding?
}

FixedString[4]	chunk name ("PHG2")
UInt32			total size of PHG2 chunk (515 in Bruno)

UInt32			group count (9)
for each group
{
	UInt32			group name length
	FixedString[]	group name
	
	UInt32			phoneme count
	for each phoneme
	{
		UInt32			unknown (possibly index into PHDC table?)
		UInt32			phoneme name length
		FixedString[]	phoneme name
	}
	
	UInt32			unknown (0)
}