This document discusses digital signal processing applications in audio processing. It covers topics like digital audio mixing, speech synthesis and recognition, and the compact disk digital audio system. Audio signals can be represented digitally or analog, and processing can occur in either domain by altering the signals mathematically or electrically. Applications of audio processing are necessary for broadcasting, as it addresses problems transmitting audio from the studio to transmitter. The compact disk digital audio system section focuses on CD and digital audio tape technology for music recording and playback.
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