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Windows Media Audio Lossless Compression Technology

Windows Media Audio (WMA), developed by Microsoft, is an audio data compression technology that consists of four distinct codecs that include WMA, WMA Pro, WMA Lossless and WMA Voice. It is a proprietary technology which was originally developed as a competitor to the MP3 and RealAudio codecs.

Microsoft claims that the audio encoded with WMA provides better sound than MP3 at the same bit rate and that audio encoded with WMA at lower bit rates sound better than MP3 at higher bit rates.

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Sound Cards for Input and Output of Audio Signals

Sound cards are computer expansion cards that help in the input and output of audio signals to and from a computer that’s under control of computer programs. They are used to provide audio component for multimedia applications like music composition, education, presentation, editing video/audio and entertainment. Audio capability is built-in for many computers but some require additional expansion cards for the purpose.

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