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History of Digital Audio Part 2 Different formats use different methods of audio compression, but bit rate still plays a role as a measure of audio quality. The sample rate also plays an important role and the number of hertz shows how many parts per second the file is divided into. The lower limit of … Continue reading ""https://blogs.umass.edu/Techbytes/files/2017/02/iab-digital-audio-committee-does-dallas-4.png