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WAV

WAV is a standard audio format for Windows operating systems, often used for storing high-quality, uncompressed sound. WAV files can contain CD-quality audio signals. However, CD-quality WAV files require relatively large amounts of memory.

WAV files are probably the simplest of the common formats for storing audio samples. Unlike MPEG audio and other compressed formats, WAVs store samples "in the raw" where no pre-processing is required other that formatting of the data.

The WAV file consists of three "chunks" of information: The RIFF chunk which identifies the file as a WAV file, The FORMAT chunk which identifies parameters such as sample rate and the DATA chunk which contains the actual data (samples).

WAV (or WAVE), short for WAVEform audio format, is a Microsoft and IBM audio file format standard for storing audio on PCs. It is a variant of the RIFF bitstream format method for storing data in "chunks", and thus also close to the IFF and the AIFF format used on Macintosh computers. It takes into account some peculiarities of the Intel CPU such as little endian byte order. The RIFF format acts as a "wrapper" for various audio compression codecs. It is the main format used on Windows systems for raw audio.

Though a WAV file can hold audio compressed with any codec, by far the most common format is pulse-code modulation audio data. Since PCM uses an uncompressed, lossless storage method which keeps all the samples of an audio track, professional users or audio experts may use the WAV format for maximum audio quality. WAV audio can also be edited and manipulated with relative ease using software.

WAV files can be used as an intermediary storage type for ripping songs fom cassette tapes. People using Windows's Sound Recorder can redirect the output from their old Walkman-type cassette players's ear phone jacks to the PC audio input jacks via an audio cable. Although Sound Recorder can only record for 30 seconds, there are easy ways to lengthen the file for long songs or even the entire tape. The WAV file is then converted via freeware packages to other, more compact formats.

As file sharing over the Internet has become popular, the WAV format has declined in popularity, primarily because uncompressed WAV files are quite large. More frequently, compressed but lossy formats such as MP3, Ogg Vorbis and Advanced Audio Coding are used to store and transfer audio, since their smaller file sizes allow for faster transfers over the Internet, and large collections of files consume only a conservative amount of disk space. There are also more efficient, lossless codecs available, such as Monkey's Audio, WavPack, FLAC, Shorten, TTA, Apple Lossless and WMA Lossless.

The WAV format is limited to files that are less than 2 GiB in size, due to the way its 32-bit file size header is read by most programs. Although this is equivalent to more than 3 hours of CD-quality audio (44.1 kHz, 16-bit stereo), it is sometimes necessary to go over this limit. The W64 format was created for use in Sound Forge. This format can be converted using the LGPL libsndfile library.

How to convert WAVE (.wav) to MP3, WMA.

3GP AAC AC3 ASF ASX AUDIO_TS
AVI CDA Codec CSS D-VHS DAT
DivX DRM DTS DV DVD DVD10
DVD18 DVD5 DVD9 DVD-Audio DVD-MP3 FLAC
ID3 ISO M3U M4A M4P MIDI
miniDV miniDVD MOV MP2 MP3 MP3 ID3 Tag
MPEG MPEG1 MPEG2 MPEG4 MPEG7 NTSC
OGG OGG Vorbis PAL QuickTime RA RealVideo
Region codes RM RMVB Streaming SVCD SVHS
VCD VHS VHSRip VIDEO_TS VOB VQF
WAV WMA WMV XSVCD XviD  










 
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