Compressed audio representations
Save bits on quantization
- variable quantization (mu-law, ADPCM)
- noise shaping & `perceptual coding'
Parametric models use stronger constraints
- approximate signal as output of a process
- how to extract/find best parameters?
- size vs. quality vs. complexity
- encode high-level temporal structure
- e.g. MIDI, MPEG-4
- implies a synthesis method...
Lego Audio Workshop: Overview of digital audio -