WMA

The brand name for several technically distinct proprietary compressed audio file formats developed by Microsoft. The original WMA (also known as WMA Standard) was initially intended to be a competitor to the popular MP3 format, and became the second most widely supported format for compressed audio. The newer and more advanced WMA Pro has positioned itself as a competitor to the Advanced Audio Coding (AAC) format (but hardware support remains scarce as of May 2007). The two other formats, WMA Lossless, and WMA Voice, enjoy niche popularity.

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