Alternatives to MP3

Written by Ross MacIver

Although MP3 isrepparttar most popular format for encoding music, it is by no meansrepparttar 137031 only one. There are two basic methods for compressing audio – lossless and lossy, and for each of these methods there are many formats.

Lossless compression means that none ofrepparttar 137032 audio data is removed during compression. Lossy compression means that audio data is permanently removed fromrepparttar 137033 audio file. Lossy compression results in smaller files, but there is no way to rebuildrepparttar 137034 audio data to its original format. MP3 is an example of lossy compression.

Lossy Compression Formats

There are many alternatives to MP3 when it comes to encoding audio files. Microsoft reportedly developedrepparttar 137035 WMA format to avoidrepparttar 137036 licensing costs associated with MP3. WMA files can be played withrepparttar 137037 Windows Media Player that is included withrepparttar 137038 Windows operating system as well as many other audio players. It features similar encoding rates to MP3 and similar file sizes.

AAC (Advanced Audio Coding) isrepparttar 137039 format preferred by Apple and is used for its popular iTunes and iPod products. AAC files can be smaller than MP3 files because it uses more efficient encoding technology. A 96 kpbs AAC file is similar in sound quality to a 128 kbps MP3 file.

Reducing Noise in Audio Files

Written by Ross MacIver

The beauty of digital audio is its promise of pristine quality. No clicks, hiss or scratches that wererepparttar norm of vinyl and tape recordings. That’s not to say that all digital audio is noise-free. Far from it. Poor recordings can still be made inrepparttar 137030 digital medium and recordings that have been transferred from analog (vinyl records or cassettes) to digital will retain some of their noise.

Fortunately, cleaning up digital audio is a fairly easy process. There are many software packages onrepparttar 137031 market specifically designed for reducing specific types of noise in digital recordings. Not all of them are suitable for all types of noise, so it’s important to analyzerepparttar 137032 type of noise you are trying to get rid of.

Most noise reducing software has a function for removing background hiss. This works by capturing a profile ofrepparttar 137033 background noise. The profile is used to create a filter that matchesrepparttar 137034 characteristics ofrepparttar 137035 noise. To use this function you must select a quiet section ofrepparttar 137036 audio to get a sample ofrepparttar 137037 noise you want to reduce. A good place to take your sample from is between songs orrepparttar 137038 first second or two beforerepparttar 137039 audio actually starts. The sample does not have to be long – half a second is all you need – but it can’t be music or voice – it should represent a silent section.

This noise profile will help you to reduce exactlyrepparttar 137040 right kind of noise from your audio recording. It is useful for reducing background hiss, but clicks and pops need another kind of processing.

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