pIf you understand basic mathematics and know how to program with Python, you're ready to dive into signal processing. While most resources start with theory to teach this complex subject, this practical book introduces techniques by showing you how they're applied in the real world. In the first chapter alone, you'll be able to decompose a sound into its harmonics, modify the harmonics, and generate new sounds.ppAuthor Allen Downey explains techniques such as spectral decomposition, filtering, convolution, and the Fast Fourier Transform. This book also provides exercises and code examples to help you understand the material.ppYou'll explore pulliPeriodic signals and their spectrumsliliHarmonic structure of simple waveformsliliChirps and other sounds whose spectrum changes over timeliliNoise signals and natural sources of noiseliliThe autocorrelation function for estimating pitchliliThe discrete cosine transform DCT for compressionliliThe Fast Fourier Transform for spectral analysislil