This book by Ivan Tashev provides a comprehensive yet concise overview of the fundamental
problems and core signal processing algorithms for digital sound capture, including
ambient noise reduction, acoustic echo cancellation, and reduction of reverberation. After
introducing the necessary basic aspects of digital audio signal processing, the book presents
basic physical properties of sound and propagation of sound waves, as well as a review of
microphone technologies, providing the reader with a strong understanding of key aspects of
digitized sounds. The book discusses the fundamental problems of noise reduction, which are
usually solved via techniques based on statistical models of the signals of interest (typically
voice) and of interfering signals. An important discussion of properties of the human auditory
system is also presented; auditory models can play a very important role in algorithms for
enhancing audio signals in communication and recording/playback applications, where the
final destination is the human ear.
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