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An application of spectral translati...

Kontsevoi, Alexei.

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An application of spectral translation and spectral envelope extrapolation for high-frequency bandwidth extension of generic audio signals.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	An application of spectral translation and spectral envelope extrapolation for high-frequency bandwidth extension of generic audio signals./
Author:	Kontsevoi, Alexei.
Description:	59 p.
Notes:	Source: Masters Abstracts International, Volume: 48-05, page: 3032.
Contained By:	Masters Abstracts International48-05.
Subject:	Applied Mathematics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1475403
ISBN:	9781109737929

An application of spectral translation and spectral envelope extrapolation for high-frequency bandwidth extension of generic audio signals.
Kontsevoi, Alexei.

An application of spectral translation and spectral envelope extrapolation for high-frequency bandwidth extension of generic audio signals. - 59 p.

Source: Masters Abstracts International, Volume: 48-05, page: 3032.

Thesis (M.S.)--Duquesne University, 2010.

The scope of this work is to introduce a conceptually simple yet effective algorithm for blind high-frequency bandwidth extension of audio signals, a means of improving perceptual quality for sound which has been previously low-pass filtered or downsampled (typically due to storage considerations). The algorithm combines an application of the modulation theorem for discrete Fourier transform to regenerate the missing high-frequency end of the signal spectrum with a linear-regression-driven approach to shape the spectral envelope for the regenerated band. The results are graphically and acoustically compared to those obtained with existing audio restoration software for a variety of input signals. The source code and Windows binaries of the resulting algorithm implementation are also included.

ISBN: 9781109737929Subjects--Topical Terms:

1669109
Applied Mathematics.

An application of spectral translation and spectral envelope extrapolation for high-frequency bandwidth extension of generic audio signals.
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005 20110311132639.5
008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781109737929
035 $a (UMI)AAI1475403
035 $a AAI1475403
040 $a UMI $c UMI
100 1 $a Kontsevoi, Alexei. $3 1671743
245 1 3 $a An application of spectral translation and spectral envelope extrapolation for high-frequency bandwidth extension of generic audio signals.
300 $a 59 p.
500 $a Source: Masters Abstracts International, Volume: 48-05, page: 3032.
500 $a Adviser: Stacey Levine.
502 $a Thesis (M.S.)--Duquesne University, 2010.
520 $a The scope of this work is to introduce a conceptually simple yet effective algorithm for blind high-frequency bandwidth extension of audio signals, a means of improving perceptual quality for sound which has been previously low-pass filtered or downsampled (typically due to storage considerations). The algorithm combines an application of the modulation theorem for discrete Fourier transform to regenerate the missing high-frequency end of the signal spectrum with a linear-regression-driven approach to shape the spectral envelope for the regenerated band. The results are graphically and acoustically compared to those obtained with existing audio restoration software for a variety of input signals. The source code and Windows binaries of the resulting algorithm implementation are also included.
590 $a School code: 0067.
650 4 $a Applied Mathematics. $3 1669109
650 4 $a Engineering, General. $3 1020744
690 $a 0364
690 $a 0537
710 2 $a Duquesne University. $b Computational Mathematics. $3 1671744
773 0 $t Masters Abstracts International $g 48-05.
790 1 0 $a Levine, Stacey, $e advisor
790 1 0 $a Toews, Carl $e committee member
790 $a 0067
791 $a M.S.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1475403