JEITA CP-3451
- 79 -
The structure of fact-ck is illustrated in Figure 37. The value of ckSize is fixed at '00000004.H' (this value is used in
Write processing).
Address Offset
Code
Meaning
(Hex)
(Hex)
+00
66
+01
61
+02
63
+03
74
"fact"
(ckID)
+04
04
+05
00
+06
00
+07
00
00000004.H
(ckSize)
+08
dwSampleLength
(4 Bytes)
ckData[ckSize]
Figure 37 fact-ck Structure
<data-ck>
data-ck (data chunk) is a chunk for storing audio data. Its ckID (chunk ID) is "data".
The ckData (chunk Data) of data-ck consists of the audio data only. In some cases the chunk is filled out with
padding bytes.
The audio data is coded based on the format type. The information in fmt-ck is used when the audio data is played
back.
The ckSize (chunk Size) of data-ck is the size of the coded audio data only. The structure of data-ck is illustrated in
Figure 38.
Address Offset
Code
Meaning
(Hex)
(Hex)
+00
64
+01
61
+02
74
+03
61
"data"
(ckID)
+04
ckSize
(4 Bytes)
Size of audio data
+08
ckData[ckSize]
Coded audio data
Figure 38 data-ck Structure