Digital Audio Restoration
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Digital Audio Restoration
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Author : Simon J. Godsill
language : en
Publisher: Springer
Release Date : 2013-12-21
Digital Audio Restoration written by Simon J. Godsill and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-21 with Computers categories.
The application of digital signal processing (DSP) to problems in audio has been an area of growing importance since the pioneering DSP work of the 1960s and 70s. In the 1980s, DSP micro-chips became sufficiently powerful to handle the complex processing operations required for sound restoration in real-time, or close to real-time. This led to the first commer cially available restoration systems, with companies such as CEDAR Audio Ltd. in the UK and Sonic Solutions in the US selling dedicated systems world-wide to recording studios, broadcasting companies, media archives and film studios. Vast amounts of important audio material, ranging from historic recordings of the last century to relatively recent recordings on analogue or even digital tape media, were noise-reduced and re-released on CD for the increasingly quality-conscious music enthusiast. Indeed, the first restorations were a revelation in that clicks, crackles and hiss could for the first time be almost completely eliminated from recordings which might otherwise be un-releasable in CD format. Until recently, however, digital audio processing has required high-powered computational engines which were only available to large institutions who could afford to use the sophisticated digital remastering technology. With the advent of compact disc and other digital audio formats, followed by the increased accessibility of home computing, digital audio processing is now available to anyone who owns a PC with sound card, and will be of increasing importance, in association with digital video, as the multimedia revolution continues into the next millennium.
Digital Audio Restoration Of Gramophone Records
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Author : Christoph Frank Stallmann
language : en
Publisher:
Release Date : 2015
Digital Audio Restoration Of Gramophone Records written by Christoph Frank Stallmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Phonograph categories.
Gramophones were the main audio recording medium for more than seven decades and regained widespread popularity over the past few years. Being an analogue storage medium, gramophone records are subject to distortions caused by scratches, dust particles, high temperatures, excessive playback and other noise induced by mishandling the record. Due to the early adoption of the compact disc and other digital audio mediums, most research to reduce the noise on gramophone records focused on physical improvements such as the enhancements of turntable hardware, amelioration of the record material or advances through better record cutting techniques. Comparatively little research has been conducted to digitally filter and reconstruct distorted gramophone recordings. This thesis provides an extensive analysis on the digital detection and reconstruction of noise in gramophone audio signals distorted by scratches. The ability to approximated audio signals was examined though an empirical analysis of different polynomials and time series models. The investigated polynomials include the standard, Fourier, Newton, Lagrange, Hermite, osculating and piecewise polynomials. Experiments were also conducted by applying autoregressive, moving average and heteroskedasticity models, such as the AR, MA, ARMA, ARIMA, ARCH and GARCH models. In addition, different variants of an artificial neural network were tested and compared to the time series models. Noise detection was performed using algorithms based on the standard score, median absolute deviation, Mahalanobis distance, nearest neighbour, mean absolute spectral deviation and the absolute predictive deviation method. The reconstruction process employed the examined polynomials and models and also considered adjacent window, mirroring window, nearest neighbour, similarity, Lanczos and cosine interpolation. The detection and reconstruction algorithms were benchmarked using a dataset of 800 songs from eight different genres. Simulations were conducted using artificially generated and real gramophone noise. The algorithms were compared according to their detection and reconstruction accuracy, the computational time needed and the tradeoff between the accuracy and time. Empirical analysis showed that the highest noise detection accuracy was achieved with the absolute predictive deviation using an ARIMA model. The predictive outlier detector employing a Jordan simple recurrent artificial neural network was most efficient by achieving the best detection rate in a limited timespan. It was also found that the artificial neural networks reconstructed the audio signals more accurately than the other interpolation algorithms. The AR model was most efficient by achieving the best tradeoff between the execution time and the interpolation error.
Digital Audio Restoration
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Author : S.J. Godsill
language : it
Publisher:
Release Date :
Digital Audio Restoration written by S.J. Godsill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Handbook Of Signal Processing In Acoustics
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Author : David Havelock
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-10-26
Handbook Of Signal Processing In Acoustics written by David Havelock and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-26 with Science categories.
The Handbook of Signal Processing in Acoustics brings together a wide range of perspectives from over 100 authors to reveal the interdisciplinary nature of the subject. It brings the key issues from both acoustics and signal processing into perspective and is a unique resource for experts and practitioners alike to find new ideas and techniques within the diversity of signal processing in acoustics.
Axmedis 2008
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Author : Jaime Delgado
language : en
Publisher: Firenze University Press
Release Date : 2008
Axmedis 2008 written by Jaime Delgado and has been published by Firenze University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The present book covers topics both on fluvial and lagoon morphodynamics. The first part is dedicated to tidal environments. Topics include an overview of main morphological features and mechanisms of estuaries and tidal channels and a model devoted to investigate flow field pattern and bed topography in tidal meandering channels and a comparison with recent observational evidence of meanders within different tidal environments. The general failure of Bagnold hypothesis when applied to equilibrium bedload transport at even relatively modest transverse slope is demonstrated. A new model is then proposed based on an empirical entrainment formulation of bed grains.
The Practical Art Of Motion Picture Sound
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Author : David Lewis Yewdall
language : en
Publisher: CRC Press
Release Date : 2012-08-21
The Practical Art Of Motion Picture Sound written by David Lewis Yewdall and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-21 with Performing Arts categories.
Practical Art of Motion Picture Sound embraces the subject of sound for films. Based on the experience of the author and other top sound craftspeople, this book provides numerous real-life examples and relevant technical data. It also is firmly grounded in practical techniques and it will show you an appreciation of all the processes involved in creating motion picture sound, from how to achieve great sound despite a small budget and less-than-perfect recording conditions to steps you will need to take to create an artful audio experience. This edition is completely revised and expanded, and the most popular sound editing systems, Pro Tools and Final Cut Pro, are covered in-depth. The accompanying NEW DVD presents demonstration material as well as a large library of sound effects, while numerous charts, illustrations, and photographs help to demonstrate techniques and common industry practices. Among other topics, Practical Art of Motion Picture Sound, Third Edition includes: . Preproduction planning . Production tips . Sound design . Sound editing . ADR and looping . Using Pro Tools . Using Nagra's analog and digital systems . Custom recording sound effects
Multimedia Transcoding In Mobile And Wireless Networks
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Author : Ahmad, Ashraf M.A.
language : en
Publisher: IGI Global
Release Date : 2008-07-31
Multimedia Transcoding In Mobile And Wireless Networks written by Ahmad, Ashraf M.A. and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-07-31 with Computers categories.
"This book is designed to provide readers with relevant theoretical frameworks and latest technical and institutional solutions for transcoding multimedia in mobile and wireless networks"--Provided by publisher.
Manual Of Analogue Sound Restoration Techniques
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Author : Peter Copeland
language : en
Publisher:
Release Date : 2008
Manual Of Analogue Sound Restoration Techniques written by Peter Copeland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Sound recordings categories.
Restoring Baird S Image
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Author : Donald F. McLean
language : en
Publisher: IET
Release Date : 2000
Restoring Baird S Image written by Donald F. McLean and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Biography & Autobiography categories.
Baird, a British television pioneer, experimented with video recording on gramophone discs in the late 1920s. McLean (a consultant) has restored the surviving "Phonovision" discs and, using computer techniques reminiscent of an archaeological dig, has revealed the images on the discs and uncovered details of how the recordings were made. McLean also restored amateur recordings of the BBC's 30-line Television Services (1932-1935), providing a glimpse at what viewers were then watching. This book helps explain this period in television history. Illustrated with historic photographs, it sheds light on the achievements of Baird, the development of video recording, and the definition and invention of television itself. c. Book News Inc.
Fundamentals Of Audio Production
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Author : Drew O. McDaniel
language : en
Publisher: Allyn & Bacon
Release Date : 2008
Fundamentals Of Audio Production written by Drew O. McDaniel and has been published by Allyn & Bacon this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Business & Economics categories.
Fundamentals of Audio Production offers an up-to-date treatment of the entire spectrum of audio production activities with an emphasis on current digital production techniques that have revolutionized the field over the last decade. Individual sections of the text provide clear, detailed explanations of the recording studio, radio, audio for video, post production, field production, and live sound reinforcement. The author team brings to the text a diversity of professional specializations to provide a truly comprehensive overview of the audio production field. - from back cover.