Guide Digital Audio Formats

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Salam

didam bad nabashe yekam rajebe format haye audio sohbat beshe.

Chon doostan rajebe video ziad midonan ama audio

ham kamtar rajebesh harf zade shode.

ham inke mamolan to archive hamaton music hajme balae dare bara hamin khobe ke rajebesh bishtar bedonim.

agar soali bood dar khedmatim

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Chand daste Audio Format Darim?

Kollan 3 noe format e audio hastan, Uncompressed, Losseless, va Lossy compression format.

• Uncompressed audio formats: Ya hamoon PCM, formati hastesh ke hamontor ke az esmesh peidast compress nashodas. Yani inke tamame etalat sahiho salem daresh hazere, faghat chizi ke hast fazae bishtari migire. WAV yek mesale barez az in format hastesh.
  
  
  
• Lossless compression: Yek file-i ke compress nemishe ro barmidare bezoor compress mikone (size o kam mikone) ama! na quality dast mikhore na etelaate roo file. WMA az in format estefade mikone.
  
  
  
• Lossy compression: Etelaate bihodaro paak mikone. Alan to donyae online in format kheili saro seda karde bekhatere inke hajme fileton ro vaghean kam mikone va rahat mitonid dar internet share konid. MP3 va Real Audio ke bishtare file hae ke download mikonid be in format ha hastand (bishtar MP3) az in ravesh estefade mikonan.

Audio Format-haye mahboob:

• MP3 (.mp3): Albumhaye DL centerhae irani mamolan tamam be in format hastan. MP3 esme pasvandie in noe file hastesh, hamchenin esmi hast barae MPEG, Audio Layer3. Layer 3 yek model coding az 3 noe coding mojood hastesh ( Layer 1, Layer 2, va Layer 3) barae compress kardan signal-haye So`ti. Layer 3 tamame etelaate bihoodaro ya benoe signalhae ezafi ro az bein mibarad, Chizae ke gooshe ensan nemitoone beshnave. Va hamchenin MDCT (Modified Discrete Cosine Transform) 18 barabar frequency resolution ro be Layer 3 ezafe mikone. Yani Layer 3 eteelate aslie file ro ke az CD ba bitrate 1411.2Kbps taghsim bar hododan 12 (yani bitrate mishe 112-128kbps) mikone bedone inke keifiat ro kharab kone koochik mikone.
  
  
  
• WMA (.wma): Yek formate microsoft hastesh barae encode kardan file hae so`tie digital, shabih be MP3 hast ama! fileharo be rate bishtari kochik mikone. WMA az pasvand .wma estefade mikone ke mitone ba connection hae mokhtalef va bandwidth hae mokhtalef hamkari kone.
  
  
  
• WAV (.wav): Microsoft va IBM az in format barae save kardan file-haye so`ti estefade mikonan. Mishe goft WAV format barae operating system haye windows sakhte shode.
  
  
  
• Real Audio (.ra .ram .rm): In format barae in sakhte shode ke shoma betonid zende fileton ro stream konid. Barae baz kardan in file bayad mamolan barnameye RealPlayer estefade konid.
  
  
  
• MIDI (.mid): MIDI (Music Instrument Digital Interface) sakhte shode barae music electronici, ke mitonan ba estefade az sound card computeri musiceshon ro bar roe computer gharar bedan. Dar vaghe, MIDI barae Pitche Note ha, zamane music, va Volume fahmidan behtarin format hastesh. Va onhae ke vared hastan be in format mitonan effecthae mokhtalefi bedan va bahash rahat tar bazi konan.
  
  
  
• OGG (.ogg): Agar bekhaim ba formathae dige moghayesash konim hamon kare baghiaro mikone, yani file digital audio ro mikhone. Va az Vorbis estefade mikone ke doost dare jae gozine MP3 beshe dar ayande. Chon ham hajme kamtari migire ham be quality dast nemizane. Ama chon MP3 kheili pishraft karde va hame estefade mikonan va mishe dar har jae play kard, hanooz mahbob nashode.