OBD:SNDD/wav: Difference between revisions

Revision as of 22:28, 3 April 2007

<== SNDD File ==>
Sound Data

Oni uses in the PC version the ADPCM wav format. The header of this format is explained below.

Hex	Translation	Meaning
Below follows the basic wav format header.
08 00 00 00	8	size of the following complete header part in bytes; (it seems that Oni uses only the following first 8 bytes, though the complete size of the header is 50 bytes)
02 00	2	format ID (2 = ADPCM format)
01 00	1	number of channels (1 = mono)
22 56 00 00	22050	samples per seconds; (also known as "frequency" or "sample rate")
93 2B 00 00	11155
00 02	512	block alignment; used for buffer estimation; (the block alignment of 22050 samples per second is always 512 bytes)
04 00	4	bits per sample
Below follows the special extended ADPCM wav format header.
20 00	32	size of the following extended information part in bytes
F4 03	1012
07 00	7	number of the following coefficient sets
00 01 00 00	256, 0	The 14 coefficients are standard and are used by the wave to play. The seven coefficient sets are preset. They must appear in this order.
00 02 00 FF	512, -256
00 00 00 00	0, 0
C0 00 40 00	192, 64
F0 00 00 00	240, 0
CC 01 30 FF	460, -208
88 01 15 FF	392, -232

@@ Line 94: / Line 94: @@
 |}
-;Usual header
+;22.05 kHz mono
 *sample rate 22.05 kHz
 *average rate 11155
@@ Line 113: / Line 113: @@
 }}
 |}
-;44 kHz header
+;44 kHz mono
 *sample rate 44.1 kHz
 *average rate 22179
@@ Line 132: / Line 132: @@
 }}
 |}
+;22.05 kHz stereo
+*sample rate 22.05 kHz
+*average rate 22311
+*block alignment 1024
+*1012 samples per block
+{|
+{{HexRow|0x00|
+|°°|°°|°°|°°|°°|°°|°°|°°|08|00|00|00|02|00|01|00|
+}}
+{{HexRow|0x10|
+|22|56|00|00|93|2B|00|00|00|02|04|00|20|00|F4|03|
+}}
+{{HexRow|0x20|
+|07|00|00|01|00|00|00|02|00|FF|00|00|00|00|C0|00|
+}}
+{{HexRow|0x30|
+|40|00|F0|00|00|00|CC|01|30|FF|88|01|18|FF|00|°°|
+}}
+|}
 [[Main Page]] >> [[OBD:Oni Binary Data|Oni Binary Data]] >> [[OBD:File types|File Types]] >> [[OBD:SNDD|SNDD File]] >> Wav Header