COMPUTER01L25: Audio File Formats скачать в хорошем качестве

COMPUTER01L25: Audio File Formats

OBJECTIVES  Define audio.  Define audio file format.  List and describe the 5 common audio file formats. LESSON PREREQUISITE None LESSON PROPER Audio File Formats Audio is a term used to describe any sound or noise that is within a range the human ear is capable of hearing. Measured in hertz, the audio signal on a computer is generated using a sound card and is heard through speakers or headphones. An audio file format is a file format for storing digital audio data on a computer system. There are 5 common audio file formats.  AAC  FLAC  MP3  WAV  WMA ACC  AAC is developed by Apple Inc.  AAC stands for Advanced Audio Coding.  AAC is the default audio format for iPod and iTunes.  AAC uses the file extension .acc FLAC  FLAC is developed by Xiph.Org Foundation.  FLAC stands for Free Lossless Audio Codec.  FLAC is an open format with royalty-free licensing and a reference implementation which is free software.  FLAC uses the file extension .flac MP3  MP3 is created by Karlheinz Brandenburg.  MP3 files are actually the sound part of MPEG files.  MP3 is the most popular format for music players.  MP3 uses the file extension .mp3 WAV  WAV is developed by IBM and Microsoft.  WAV is also known as Waveform Audio File Format.  WAV is the default audio format for Windows.  WAV uses the file extension .wav WMA  WMA is developed by Microsoft.  WMA stands for Windows Media Audio.  WMA is a proprietary technology that forms part of the Windows Media framework.  WMA uses the file extension .wma