1.1 Audio as data 1.2 What is an audio signal? 1.3 Why binary? 1.4 Why digital? 1.5 Some digital audio processes outlined 1.6 Time compression and expansion 1.7 Error correction and concealment 1.8 Channel coding 1.9 Audio compression 1.10 Disk-based recording 1.11 Rotary-head digital recorders 1.12 Digital audio broadcasting 1.13 Networks