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Audio Internals

Preface
1. The Physics of Sound
2. Transducers
3. Spectral Analysis
4. Time-Varying Signals
5. Impulses
6. Modulation
7. Audio Compression
8. Speech Processing

6. Modulation
Quadrature Amplitude Modulation

Quadrature Amplitude Modulation

Digital Modulation

Linear Predictive Coding

What is QAM?
Constellation Diagrams
Analog vs. Digital QAM

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