MP3 File : 거미 1집 01 하고 싶은말.mp3
00000000h: FF FB B0 04 00 00 00 00 00 69 06 00 00 00 00 00 ; 馨......i......
00000010h: 0D 20 C0 00 00 00 00 01 A4 1C 00 00 00 00 00 34 ; . ?....?.....4
00000020h: 83 80 00 00 4C 41 4D 45 33 2E 39 31 55 55 55 55 ; ?..LAME3.91UUUU
Header 4byte : FF FB B0 04
1111 1111 1111 1011 1011 0000 0000 0100
Sync - 12bit : 1111 1111 1111
ID - 1bit : 1 => MPEG1
0 - MPEG2, 1 - MPEG1
Layer - 2bit : 01 => Layer III
00 Not defined
01 Layer III
10 Layer II
11 Layer I
Protect - 1bit : 1
Bitrate(kbits/s) - 4bit : 1011 => 192 Kbps
Bitrate MPEG-1, MPEG-1, MPEG-1, MPEG-2, MPEG-2, MPEG-2,
value layer I layer II layer III layer I layer II layer III
0000
0001 32 32 32 32 32 8
0010 64 48 40 64 48 16
0011 96 56 48 96 56 24
0100 128 64 56 128 64 32
0101 160 80 64 160 80 64
0110 192 96 80 192 96 80
0111 224 112 96 224 112 56
1000 256 128 112 256 128 64
1001 288 160 128 288 160 128
1010 320 192 160 320 192 160
1011 352 224 192 352 224 112
1100 384 256 224 384 256 128
1101 416 320 256 416 320 256
1110 448 384 320 448 384 320
1111
Frequency(Sample rate) - 2bit : 00 => 44100 Hz
Frequency
value MPEG-1 MPEG-2
00 44100 Hz 22050 Hz
01 48000 Hz 24000 Hz
10 32000 Hz 16000 Hz
11
Padding - 1bit : 0 => 626.9 = 144*192000/44100
0 : FrameSize = 144 * BitRate / SampleRate
1 : FrameSize = (144 * BitRate / SampleRate) + 1
Private bit - 1bit : 0
Mode - 2bit : 00 => Stereo
Mode
value mode
00 Stereo
01 Join stereo
10 Dual channel
11 Mono
Mode extension - 2bit : 00
Copy - 1 bit : 0
Copyright
Home - 1 bit : 1
Emphasis - 2bit : 00 => none
Emphasis
value Emphasis method
00 none
01 50/15ms
10
11 CCITT j.17