source: ammosreader/org/audio.org

guix
Last change on this file was 1e781ba, checked in by recknagel <recknagel@…>, 3 years ago

former radardex-project
  • Property mode set to 100644
File size: 1.5 KB
Line 
1#+title: Audio
2
3* Description Audio sample file AudioAufzeichnungLOW.bin
4
5Little Endian!!!
6
7** Global Frame Header (6 x 32 Bit) Offset 0x00000000
8
9*** 32 Bit Magic word 0x726574fb = 0xfb746572 next magic bytes found at offsets
10
110x0000 (0000)
120x0544 (1348)
130x0a88 (2696)
140x0fcf (4047)
150x1510 (5392)
160x1a57 (6743)
170x1f9b (8091)
180x24df (9439)
19
20*** 32 Bit Frame length in 32 bit words
21
220x51010000 = 0x00000151 = Integer 337 * 4 bytes = 1348 Bytes = 0x0544
23
24*** 32 Bit Running Frame number
25
260x23450000 = 0x00004523 = Integer 17699
27
28*** 32 Bit Frame Type
29
300x00010000 = 0x00000100 = Integer 256
31
32*** 32 Bit Data header length in 32 bit words
33
340x0b000000 = 0x0000000b = Integer 11 * 4 = 44 Bytes
35
36*** 32 Bit Reserved
37
380x00000000 = 0x00000000 = Integer 0
39
40** Ammos Data header 44 bytes
41
424 Bytes Sample rate
434 Bytes Status
448 Bytes Frequency
454 Bytes Demod Bandwidth
464 Bytes Demod Type
474 Bytes Sample Count
484 Bytes Channel Count
494 Bytes Sample Size
50
518 Bytes timestamp if extended
52
530xd4300000 = 0x000030d4 = 12500 Sample rate
540x00000000 = 0x00000000 = 0 Squelch Status
550xc0d3f205 0x00000000 = 0x00000000 0x05f2d3c0 = 99800000 = 99.8 MHz
560xc0d40100 = 0x0001d4c0 = 120000 = 120 KHz
570x00000000 = 0x00000000 = 0 = FM
580x80020000 = 0x00000280 = Integer 640 = Sample Count per Channel
590x01000000 = 0x00000001 = 1 = 1 Channel
600x02000000 = 0x00000002 = 2 = 2 Bytes Sample size
610x1d26fe89 0xcada0500 = 0x0005daca 0x89fe261d = 1647938316938525 microseconds Unixtime = 2022-03-22T09:38:36
62
63** Ammos Audio Data Body
64
65Offset 0x0044 = Integer 68 - Next offset 1348 - Differenz = 1280
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