Audio

1. Description Audio sample file AudioAufzeichnungLOW.bin

Little Endian!!!

1.1. Global Frame Header (6 x 32 Bit) Offset 0x00000000

1.1.1. 32 Bit Magic word 0x726574fb = 0xfb746572 next magic bytes found at offsets

0x0000 (0000) 0x0544 (1348) 0x0a88 (2696) 0x0fcf (4047) 0x1510 (5392) 0x1a57 (6743) 0x1f9b (8091) 0x24df (9439)

1.1.2. 32 Bit Frame length in 32 bit words

0x51010000 = 0x00000151 = Integer 337 * 4 bytes = 1348 Bytes = 0x0544

1.1.3. 32 Bit Running Frame number

0x23450000 = 0x00004523 = Integer 17699

1.1.4. 32 Bit Frame Type

0x00010000 = 0x00000100 = Integer 256

1.1.5. 32 Bit Data header length in 32 bit words

0x0b000000 = 0x0000000b = Integer 11 * 4 = 44 Bytes

1.1.6. 32 Bit Reserved

0x00000000 = 0x00000000 = Integer 0

1.2. Ammos Data header 44 bytes

4 Bytes Sample rate 4 Bytes Status 8 Bytes Frequency 4 Bytes Demod Bandwidth 4 Bytes Demod Type 4 Bytes Sample Count 4 Bytes Channel Count 4 Bytes Sample Size

8 Bytes timestamp if extended

0xd4300000 = 0x000030d4 = 12500 Sample rate 0x00000000 = 0x00000000 = 0 Squelch Status 0xc0d3f205 0x00000000 = 0x00000000 0x05f2d3c0 = 99800000 = 99.8 MHz 0xc0d40100 = 0x0001d4c0 = 120000 = 120 KHz 0x00000000 = 0x00000000 = 0 = FM 0x80020000 = 0x00000280 = Integer 640 = Sample Count per Channel 0x01000000 = 0x00000001 = 1 = 1 Channel 0x02000000 = 0x00000002 = 2 = 2 Bytes Sample size 0x1d26fe89 0xcada0500 = 0x0005daca 0x89fe261d = 1647938316938525 microseconds Unixtime = 2022-03-22T09:38:36

1.3. Ammos Audio Data Body

Offset 0x0044 = Integer 68 - Next offset 1348 - Differenz = 1280