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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

3. Spectral Analysis
The Fast Fourier Transform

The Fast Fourier Transform

Frequency Variation

The DFT Matrix
DFT Matrix Properties
Redundant DFT Entries
Divide and Conquer

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