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Audio in WAV files can be encoded in a variety of audio coding formats, such as GSM or MP3, to reduce the file size. All WAV files, even those that use MP3 compression, use the .wav extension. This is a reference to compare the monophonic (not stereophonic) audio quality and compression bitrates of audio coding formats available for WAV files ...
The audio in au files can be PCM or compressed with the μ-law, a-law or G.729 codecs. .awb: AMR-WB audio, used primarily for speech, same as the ITU-T's G.722.2 specification. .dss: Olympus: DSS files are an Olympus proprietary format. DSS files use a high compression rate, which reduces the file size and allows files to be copied and ...
This avoids the common problem of having to manually adjust volume levels between tracks when playing audio files from albums that have been mastered at different loudness levels. Although this de facto standard is now formally known as ReplayGain, [ 1 ] it was originally known as Replay Gain and is sometimes abbreviated RG .
However, it is also possible to present an audio file without any template. [[File:Accordion chords-01.ogg]] Caption. The parameter |thumbmay be used to give the file a caption. That will also float the playbutton to the right. [[File:Accordion chords-01.ogg| thumb|Caption]] The size of the player can be specified: [[File:Accordion chords-01 ...
An audio format is a medium for sound recording and reproduction. The term is applied to both the physical recording media and the recording formats of the audio 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.
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Another type of normalization is based on a measure of loudness, wherein the gain is changed to bring the average loudness to a target level. This average may be approximate, such as a simple measurement of average power (e.g. RMS), or more accurate, such as a measure that addresses human perception e.g. that defined by EBU R128 and offered by ReplayGain, Sound Check and GoldWave.
These processes are often used to match the pitches and tempos of two pre-recorded clips for mixing when the clips cannot be reperformed or resampled. Time stretching is often used to adjust radio commercials [1] and the audio of television advertisements [2] to fit exactly into the 30 or 60 seconds available. It can be used to conform longer ...