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Perceptual Audio Coder
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<p>Perceptual Audio Coder (PAC) is a <a href="/facts/Lossy_audio_compression/gMFuY4FT">lossy audio compression</a> algorithm. It is used by <a href="/facts/Sirius_Satellite_Radio/PgBc1f6E">Sirius Satellite Radio</a> for their <a href="/facts/Digital_audio_radio_service/fJmR5JEr">digital audio radio service</a>. </p>