Rion DA-21, Инструкция по эксплуатации

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143
WAVE File Format
Chunks
The following tables provide details about the structure of the RIFF header
(RIFF chunk) and the various sub chunks listed in the section “File structure
and size” (page 140).
RIFF chunk
Table 1 RIFF chunk
Type
Variable
name
Size
(Byte)
Description Value
char[4] Chunk ID 4 Indicates RIFF "RIFF"
uint32 Chunk Size 4
Total size of following data
(not including this item)
Depends on
recording
parameters
char[4] riffType 4 Indicates RIFF type "WAVE"
fmt sub chunk
Table 2 fmt sub chunk
Type Variable name
Size
(Byte)
Description Value
char[4] Chunk ID 4 Indicates chunk type "fmt_"
uint32 Chunk Size 4
Total size of following data
(not including this item)
16
uint16 wFormatTag 2 Format type 0x0001
uint16 nChannels 2 Number of channels 1 to 4
uint32 nSamplesPerSec 4 Number of samples per second See Table 3
uint32 nAvgBytesPerSec 4 Number of bytes per second See Fig. 1
uint16 nBlockAlign 2 Block size See Fig. 2
uint16 wBitsPerSample 2 Number of bits per sample 16 / 24
Table 3 nSamplesPerSec
Range
Rate
100 Hz 500 Hz 1 kHz 5 kHz 10 kHz 20 kHz
2.4 240 1200 2400 12000 24000 48000
2.56 256 1280 2560 12800 25600 51200