Sound Capture and Processing : Practical Approaches
Ivan Jelev. Tashev
Bok Engelsk 2009 · Electronic books.
| Annen tittel | |
|---|---|
| Utgitt | Hoboken : : Wiley, , 2009.
|
| Omfang | 1 online resource (389 p.)
|
| Opplysninger | Description based upon print version of record.. - Sound Capture and Processing: Practical Approaches; Contents; About the Author; Foreword; Preface; Acknowledgements; 1 Introduction; 1.1 The Need for, and Consumers of, Sound Capture and Audio Processing Algorithms; 1.2 Typical Sound Capture System; 1.3 The Goal of this Book and its Target Audience; 1.4 Prerequisites; 1.5 Book Structure; 1.6 Exercises; 2 Basics; 2.1 Noise: Definition, Modeling, Properties; 2.1.1 Statistical Properties; 2.1.2 Spectral Properties; 2.1.3 Temporal Properties; 2.1.4 Spatial Characteristics; 2.2 Signal: Definition, Modeling, Properties; 2.2.1 Statistical Properties. - 2.2.2 Spectral Properties2.2.3 Temporal Properties; 2.2.4 Spatial Characteristics; 2.3 Classification: Suppression, Cancellation, Enhancement; 2.3.1 Noise Suppression; 2.3.2 Noise Cancellation; 2.3.3 Active Noise Cancellation; 2.3.4 De-reverberation; 2.3.5 Speech Enhancement; 2.3.6 Acoustic Echo Reduction; 2.4 Sampling and Quantization; 2.4.1 Sampling Process and Sampling Theorem; 2.4.2 Quantization; 2.4.3 Signal Reconstruction; 2.4.4 Errors During Real Discretization; 2.4.4.1 Discretization with a Non-ideal Sampling Function; 2.4.4.2 Sampling with Averaging. - 2.4.4.3 Sampling Signals with Finite Duration2.5 Audio Processing in the Frequency Domain; 2.5.1 Processing in the Frequency Domain; 2.5.2 Properties of the Frequency Domain Representation; 2.5.3 Discrete Fourier Transformation; 2.5.4 Short-time Transformation, and Weighting; 2.5.5 Overlap-Add Process; 2.5.6 Spectrogram: Time-Frequency Representation of the Signal; 2.5.7 Other Methods for Transformation to the Frequency Domain; 2.5.7.1 Lapped Transformations; 2.5.7.2 Cepstral Analysis; 2.6 Bandwidth Limiting; 2.7 Signal-to-Noise Ratio: Definition and Measurement. - 2.8 Subjective Quality Measurement2.9 Other Methods for Quality and Enhancement Measurement; 2.10 Summary; Bibliography; 3 Sound and Sound Capturing Devices; 3.1 Sound and Sound Propagation; 3.1.1 Sound as a Longitudinal Mechanical Wave; 3.1.2 Frequency of the Sound Wave; 3.1.3 Speed of Sound; 3.1.4 Wavelength; 3.1.5 Sound Wave Parameters; 3.1.5.1 Intensity; 3.1.5.2 Sound Pressure Level; 3.1.5.3 Power; 3.1.5.4 Sound Attenuation; 3.1.6 Huygens' Principle, Diffraction, and Reflection; 3.1.7 Doppler Effect; 3.1.8 Weighting Curves and Measuring Sound Pressure Levels; 3.2 Microphones. - 3.2.1 Definition3.2.2 Microphone Classification by Conversion Type; 3.3 Omnidirectional and Pressure Gradient Microphones; 3.3.1 Pressure Microphone; 3.3.2 Pressure-gradient Microphone; 3.4 Parameter Definitions; 3.4.1 Microphone Sensitivity; 3.4.2 Microphone Noise and Output SNR; 3.4.3 Directivity Pattern; 3.4.4 Frequency Response; 3.4.5 Directivity Index; 3.4.6 Ambient Noise Suppression; 3.4.7 Additional Electrical Parameters; 3.4.8 Manufacturing Tolerances; 3.5 First-order Directional Microphones; 3.6 Noise-canceling Microphones and the Proximity Effect. - 3.7 Measurement of Microphone Parameters. - Provides state-of-the-art algorithms for sound capture, processing and enhancement Sound Capture and Processing: Practical Approaches covers the digital signal processing algorithms and devices for capturing sounds, mostly human speech. It explores the devices and technologies used to capture, enhance and process sound for the needs of communication and speech recognition in modern computers and communication devices. This book gives a comprehensive introduction to basic acoustics and microphones, with coverage of algorithms for noise reduction, acoustic echo cancellation, d
|
| Emner | |
| Sjanger | |
| Dewey | |
| ISBN | 9780470319833
|
