DEMO.DESIGN
Frequently Asked Questions
 
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p (2)
MP3 === ------------------------------------------------------------------------------- Byte 0 Byte 1 Byte 2 Byte 3 ---------T--------T--------T-------- 76543210765432107654321076543210 LTTTTTTTT+TTTTTTTT+TTTTTTTT+TTTTTTTT- ++++++++-++-+-+- +++-+- +-+-+- L--- 00=Emphasis None 01=Emphasis 50/15 microseconds 10=Emphasis Dunno 11=Emphasis CITT j.17 L---- 0=Original NO 1=Original YES L----- 0=Copyright NO 1=Copyright YES L------- <<Mode extension>> L--------- 00=Stereo 01=Joint stereo 10=Dual channel 11=Single Channel (Mono) L----------- 0=Extension None 1=Extension Private L------------ 0=Unused bits are filled (padding req.) 1=All bits in frame are used L-------------- <<Sample Rate Index>> L------------------ <<Bitrate>> L-------------------- 0=Error Protection Bit CRC is ON 1=Error Protection Bit CRC is OFF L---------------------- 00=Layer-? 01=Layer-3 10=Layer-2 11=Layer-1 L------------------------ 00=MPEG-2.5 (44100 Hz) 01=MPEG-? 10=MPEG-2.0 (22050 Hz) 11=MPEG-1.0 (11025 Hz) L------------------------------------ Sync Header, 0xFFEx SAMPLE RATE ~~~~~~~~~~~~~~~~~~~ MPEG-1 MPEG-2 ==T===== ==T===== 0044100 0022050 0148000 0124000 1032000 1016000 11????? 11????? <=- "Stream error!" L=======- L=======- MODE EXTENSION ~~~~~~~~~~~~~~~~~~~~~~ When encoding with joint stereo, this specifies to which freq. band it is bound. Layer-1,2 Layer-3 ==T== ==T== 00 4 00 0 01 8 01 4 1012 10 8 1116 1116 L====- L====- BIT RATE (kBit/s) ~~~~~~~~~~~~~~~~~~~~~~~~~ MPEG-1 MPEG-2 ====T=====T=====T===== ====T=====T=====T===== 380004410048000 160002205024000 ====+=====+=====+===== ====+=====+=====+===== 0000 0 0 0 0000 0 0 0 0001 32 32 32 0001 32 8 8 0010 64 48 40 0010 48 16 16 0011 96 56 48 0011 56 24 24 0100 128 64 56 0100 64 32 32 0101 160 80 64 0101 80 40 40 0110 192 96 80 0110 96 48 48 0111 224 112 96 0111 112 56 56 1000 256 128 112 1000 128 64 64 1001 288 160 128 1001 144 80 80 1010 320 192 160 1010 160 96 96 1011 352 224 192 1011 176 112 112 1100 384 256 224 1100 192 128 128 1101 416 320 256 1101 224 144 144 1110 448 384 320 1110 256 160 160 1111 ??? ??? ??? 1111 ??? ??? ??? L===================- L===================- Layer 2/3 FrameSize=144*bps/Sample_Frequency+PaddingBit Stereo Mono MPEG 1.0 32 17 MPEG 2.x 17 09 >---------------------------------------------------------------/ p , p: >---------------------------------------------------------------\ Offset 00h db 'TAG' ; Offset 03h db rep 1Eh (ASCII) ;H 30 ASCII Offset 21h db rep 1Eh (ASCII) ; 30 ASCII Offset 3Fh db rep 1Eh (ASCII) ; 30 ASCII Offset 5Dh db rep 04h (ASCII) ; 4 ASCII Offset 61h db rep 1Eh (ASCII) ; 30 ASCII Offset 7Fh db ? ; 0x00...147 : Blues Classic Rock Country Dance Disco Funk Grunge Hip-Hop Jazz Metal New Age Oldies Other Pop R&B Rap Reggae Rock Techno Industrial Alternative Ska Death Metal Pranks Soundtrack Euro-Techno Ambient Trip-Hop Vocal Jazz+Funk Fusion Trance Classical Instrumental Acid House Game Sound Clip Gospel Noise Alt. Rock Bass Soul Punk Space Meditative Instrumental Pop Instrumental Rock Ethnic Gothic Darkwave Techno-Industrial Electronic Pop-Folk Eurodance Dream Southern Rock Comedy Cult Gangsta Rap Top 40 Christian Rap Pop/Funk Jungle Native American Cabaret New Wave Psychedelic Rave Showtunes Trailer Lo-Fi Tribal Acid Punk Acid Jazz Polka Retro Musical Rock & Roll Hard Rock Folk Folk/Rock National Folk Swing Fast-Fusion Bebob Latin Revival Celtic Bluegrass Avantgarde Gothic Rock Progressive Rock Psychedelic Rock Symphonic Rock Slow Rock Big Band Chorus Easy Listening Acoustic Humour Speech Chanson Opera Chamber Music Sonata Symphony Booty Bass Primus Porn Groove Satire Slow Jam Club Tango Samba Folklore Ballad Power Ballad Rhythmic Soul Freestyle Duet Punk Rock Drum Solo A Cappella Euro-House Dance Hall Goa Drum & Bass Club-House Hardcore Terror Indie BritPop Negerpunk Polsk Punk Beat Christian Gangsta Rap Heavy Metal Black Metal Crossover Contemporary Christian Christian Rock Merengue Salsa Thrash Metal Anime JPop Synthpop 148...254 -- 255 --

1 p(/) |p p (1)

FAQ - .

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DEMO DESIGN FAQ (C) Realm Of Illusion 1994-2000,
: "DEMO.DESIGN FAQ, http://www.enlight.ru/demo/faq".