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Topic: Audio file format


Related Topics
WAV
MP3
MP2
Ogg

In the News (Mon 23 Nov 09)

  
  AU - Audio File Format
An audio file is composed of three parts: a 24-byte header, a variable-length annotation block, and a contiguous segment of audio data.
Audio header and data fields are stored in network (big-endian) byte order, regardless of the native byte-order of the machine architecture on which an application may be running.
Audio data is encoded in the format identified by the file header.
www.opengroup.org /public/pubs/external/auformat.html   (582 words)

  
 Introduction to HTML - Audio File Formats
The AIFC format is an extension of the AIFF format with file compression.
The quality of the audio playback is determined not only by the sophistication of the decoder used but also by the sampling rate at with the sound was encoded, and the degree of file compression.
File size depends on the length of the recorded performance and on the sampling rate used to record and encode the audio information for playback.
www.netstrider.com /tutorials/HTML/audio/formats.html   (473 words)

  
 Audio file format - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-18)
The general approach towards storing digital audio formats is to sample the audio voltage (corresponding to a certain position in the membrane of a speaker) in regular intervals (e.g.
It is important to distinguish between a file format and a codec.
The WAV format is based on the RIFF file format, which is similar to the IFF format.
en.wikipedia.org /wiki/Audio_file_format   (600 words)

  
 With digital audio
Audio on a compact disc is not compressed and gives the user the highest sound quality; when working with the Internet, sound must be compressed to make a smaller file for downloading.
On average, files are reduced to about 10% of their original uncompressed size — a three or four minute stereo clip that would take up about 30 to 40 megabytes on an audio CD will only be about three or four megabytes as an MP3.
The files are played using a free “plug-in” that is available from their Web site and you can obtain a free encoder to convert files from WAV to Real Audio format.
www.uwm.edu /People/price/Audio_file_format_comparison.html   (1251 words)

  
 Audio File Formats   (Site not responding. Last check: 2007-10-18)
File headers describe the contents of audio files, which are usually arranged in blocks or chunks.
The compression of audio typically introduces some loss of the original signal (i.e., it is not possible to perfectly reconstruct the original signal from its compressed representation).
Sound Description Interchange Format (SDIF) was developed by many in the computer music field in the late 1990s to support multiple data representations of a given sound.
www.music.mcgill.ca /~gary/307/week6/audiofile.html   (532 words)

  
 Audio Interchange File Format
Audio IFF is primarily an interchange format, although application designers should find it flexible enough to use as a data storage format as well.
Audio IFF is the result of several meetings held with music developers over a period of ten months in 1987-88.
Audio IFF is intended for use with a larger variety of computers, sampled sound instruments, sound software applications, and high fidelity recording devices.
local.wasp.uwa.edu.au /~pbourke/dataformats/aiff   (4754 words)

  
 Audio File Formats - The Sonic Spot
Audio files usually contain information about the included audio waveform's characteristics and how it is stored.
Most of an audio file's content is used to describe the individual audio samples that are played sequentially to reconstruct the waveform.
Even though compressed audio continues to become more popular because of limited storage space and slow network speeds, Wave files still tend to contain uncompressed waveform data while other file formats (such as MP3) are used for compressed data.
www.sonicspot.com /guide/samplefileformats.html   (287 words)

  
 Audio File Format Specifications   (Site not responding. Last check: 2007-10-18)
ESPS files are infamous as to the length of their headers; the standard ESPS programs imbed the header of the input file(s) along with processing parameters into the header of the output file to provide a complete history of the processing steps.
The file byte order is primarily determined by the ESPS magic number (which appears again in the fixed part of the header).
For audio files, normally all samples will consist of the same data type and so only one of the number fields will be non-zero.
www-mmsp.ece.mcgill.ca /Documents/AudioFormats/ESPS/ESPS.html   (861 words)

  
 Audio Interchange File Format
Audio Interchange File Format (or AIFF) is a file format for storing digital audio (waveform) data.
An Audio IFF file is a collection of a number of different types of chunks.
Audio IFF files may be identified in other Apple file systems as well.
www.borg.com /~jglatt/tech/aiff.htm   (4780 words)

  
 Awave Audio - Audio File Format Batch Converter
Audio File Format Batch Converter: Awave Audio is the easiest way to convert between different audio file formats.
ACDR (Audio Compact Disc Reader) is a very easy to use, yet fully featured tool, that lets you read tracks from audio CD's and write them to a variety of different file formats.
Awave Studio is a multi-purpose audio tool that reads around 260 different audio file formats from different platforms, synthesizers and trackers.
www.findapp.com /fmgmt/pdetails.aspx?PID=1935   (417 words)

  
 Eastsea Audio Converter: The Ideal Audio File Format Converter   (Site not responding. Last check: 2007-10-18)
MP3 is a compressed version of the WAV format and consumes as little as 10% of the hard drive space of an equivalent WAV file - typically 1 MB for a minute of music.
The MP3 format compresses audio files in such a way that the file size is relatively small, but the song sounds nearly perfect.
Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free, general-purpose compressed audio format for mid to high quality (8kHz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to 128 kbps/channel.
www.cdmp3soft.com /audioconverter/index.htm   (1100 words)

  
 File Formats
By eliminating portions of the audio file that are essentially inaudible, mp3 files are compressed to roughly one-tenth the size of an equivalent PCM file while maintaining good audio quality.
Vox format files are similar to wave files except that the vox files contain no information about the file itself so the codec sample rate and number of channels must first be specified in order to play a vox file.
mid - the midi file is not an audio file format at all.
www.nch.com.au /acm/formats.html   (1156 words)

  
 Audio Basics- How to add sound to your web page from efuse.com   (Site not responding. Last check: 2007-10-18)
And Web audio is moving past the lunatic fringe into the mainstream, with technologies such as Real Audio, which lets folks broadcast and receive talk shows, concerts, and recorded music over the Internet.
Audio Interchange File Format (.aiff)—Defined by Apple for the Macintosh, AIFF is also the format of the sound files on the Iris Indigo.
Audio (.au)—Audio is a common format for sound files on UNIX machines and also the standard audio file format for the Java programming language.
www.efuse.com /Build/web-audio-basics.html   (1867 words)

  
 Audio file formats
A Wave file is an audio file format, created by Microsoft, which has become a standard PC audio file format for everything from system and game sounds to CD-quality audio.
AIFF (Audio Interchange File Format) is one of the two most-used audio file formats used in the Apple Macintosh operating system.
MP3 (MPEG-1 Audio Layer-3) is a standard technology and format for compression a sound sequence into a very small file (about one-twelfth the size of the original file) while preserving the original level of sound quality when it is played.
facweb.cs.depaul.edu /sgrais/audio_file_formats.htm   (778 words)

  
 WAVE Audio File Format
Proprietary format developed by Microsoft and IBM as part of the Resource Interchange File Format (RIFF) for Windows 3.1.
BWF recommended as the preferred format for the delivery of music recordings to record companies in the Draft Recommendation for Delivery of Recorded Music Projects developed by the Delivery Specifications Committee of the Producer's and Engineer's Wing of the Recording Academy (National Academy of the Recording Arts and Sciences).
Additional metadata is a feature of the bext (Broadcast Audio Extension) associated with WAVE_LPCM_BWF (Broadcast WAVE Audio File Format); additional data is defined for the CART/Audio Delivery Extension to BWF proposed to the Audio Engineering Society.
www.digitalpreservation.gov /formats/fdd/fdd000001.shtml   (371 words)

  
 [No title]   (Site not responding. Last check: 2007-10-18)
The MP3/WAV Audio Files plugin was added support for Advanced Audio Coding (AAC) MPEG-4 files (including ID3v1 and ID3v2 tags), a new configuration dialog and extended support for ID3v2.
WAVE audio files are one of the common formats used to store and play audio data.
A unique inaudible code, which is inserted into an audio file in order to identify the first person who legally purchased the file.
www.lycoszone.com /info/audio-file-format.html   (243 words)

  
 Audio File Library
Key goals of the Audio File Library are file format transparency and data format transparency.
Likewise, the format of the audio data presented to the application need not be tied to the format of the data contained in the file.
Audio File Format FAQ is a good source of information.
www.68k.org /~michael/audiofile   (312 words)

  
 Audio File Format FAQ
The Audio File Format FAQ is a collection of information related to Sound Formats used by computers that was started in November of 1991 by
Wotsit Format - is a site dedicated to describing all file formats for PC's.
Audio Effects Algorithms - by Toby Kurien - Has some effects algorithms like reverb and chorus.
www.cnpbagwell.com /audio.html   (344 words)

  
 Audio file format
files, but they tend not to work propor or at all on my friends mac s.
what you have to be aware of and this goes for all file formats is that sound quality is always going to be a trade off to file size.
What works for you interms of quality vs the file size you are going to be lumped with, is the real ratio you should be concerned with.
forums.afterdawn.com /thread_view.cfm/402133   (143 words)

  
 mp3PRO Audio File Format
The MP3PRO file format was developed by Coding Technologies to provide enhanced compression to the MP3 system.
Files can be up to half as small using MP3PRO.
While there are improvements with the lower quality files, it is not a stunning difference.
www.lisashea.com /hobbies/music/formats/mp3pro.html   (185 words)

  
 File-Format Futures
The partition of the audio computer world into systems based on Windows, Macintosh and various proprietary operating systems gave birth to multiple disk file systems, audio file formats and as many proprietary EDLs as there are brands of workstation.
For this reason, the file format issue for DAWs is really composed of three basic problems: defining an audio file format; defining a disk media format; and defining one or more edit data formats (EDLs or Edit Decision Lists).
As AAF becomes an adopted format in the digital video and broadcast world, there will clearly be an impetus for some of the audio DAW manufacturers to pay attention and add this format to their arsenal.
mixonline.com /internet/newformats/audio_fileformat_futures/index.html   (2609 words)

  
 Gamasutra - Audio Resource Guide - "Introducing the Interactive XMF Audio File Format"
The Interactive Audio Special Interest Group (IA-SIG) has taken on the task of defining an Interactive XMF file format, and is also overseeing the development of a platform-independent software entity called a Soundtrack Manager that utilizes this format to facilitate the development and implementation of highly interactive audio.
As a result, audio artists are breathing a collective sigh of relief because they can now be fairly confident that their work will play back within games as they intended it to sound.
There are three aspects to game audio that must somehow work together in order for everything to function in a game as the designers and audio artists intended: the platform, the game (or audition application or editor), and audio content.
www.gamasutra.com /resource_guide/20030528/law_01.shtml   (2642 words)

  
 dbpowerAMP - audio file format problem
Yeah, sure I can plug the audio output to my PC input and record but then I might as well been of using a tape recorder or something.
The file is constant 700bytes/sec when the recorded is set to SP mode.
Obviously somewhere there has to be a setting in the file that tells is SP vs HQ, which shouldn't be too hard to find....
forum.dbpoweramp.com /showthread.php?t=5342   (1200 words)

  
 Audio File Formats
It includes a brief description of the file format and the name of a program that first used the files or is commonly used to create, edit or play them.
Typically, ASF files that contain audio content that is compressed with the Windows Media Audio (WMA) codec use the.wma extension.
Audio content that is compressed with a wide variety of codecs and that is stored in a.wav file can be played back in Windows Media Player if the appropriate codecs are installed on the computer.
www.csusm.edu /iits/trc/training/information/audioFormats.htm   (804 words)

  
 Opuzz - Help - File Format Conversion - Convert Audio File Format
To do this, simply choose the files you would like to convert, define the file format to convert into and starting converting right away.
Audio CDs are widely recognized and standardized to be supported by almost any programs available on the market.
As for MP3 files, certain programs such as some video editing software and music sequencers may not support it, and you may be required to convert your files into other supported formats.
www.opuzz.com /help_file_format_conversion.asp   (415 words)

  
 File Format. Audio, sound formats.
Audio File Formats FAQ by Chris Bagwell, Version 4.0, 14 Nov 1998.
This document provides a description of how audio files are used on various computer platforms and provides a detailed description of their internal formats.
The GF1 Patch files are multipart sound files for the Gravis Ultrasound sound card to emulate MIDI sounds in high quality.
web.coehs.siu.edu /Utilities/Storage/FileFormats/ind_wave.htm   (667 words)

  
 Audio format - Wikipedia, the free encyclopedia
An audio format is a medium for storing sound and music.
The term is applied to both the physical medium and the format of the content – in computer science it is often limited to the audio file format, but its wider use usually refers to the physical method used to store the data.
Music is recorded and distributed using a variety of audio formats, some of which store additional information.
en.wikipedia.org /wiki/Audio_format   (148 words)

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