Title :
Time-scale modification with inconsistent constraints
Author :
Quatieri, T.F. ; Hanna, T.E.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
A set theoretic estimation approach is introduced for time-scale modification of complex acoustic signals. The method determines a signal that meets, in a least-squared error sense, desired temporal and spectral envelope constraints that are inconsistent. These constraints are generalized within the set theoretic framework to include other signal characteristics such as instantaneous frequency and group delay. The approach can enhance acoustic signals consisting of closely-spaced sequential time components, and is applicable to biological, underwater, and music sound processing
Keywords :
acoustic signal processing; delays; error analysis; least squares approximations; music; set theory; spectral analysis; time-domain analysis; underwater sound; acoustic signal enhancement; acoustic signals; biological signal processing; closely spaced sequential time components; group delay; inconsistent constraints; instantaneous frequency; iterative algorithms; least-squared error; music sound processing; set theoretic estimation; signal characteristics; spectral envelope constraints; temporal envelope constraints; time-scale modification; underwater sound processing; Algorithm design and analysis; Constraint theory; Delay; Estimation theory; Fourier transforms; Frequency; Iterative algorithms; Signal analysis; Underwater acoustics; Underwater vehicles;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1995., IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3064-1
DOI :
10.1109/ASPAA.1995.483004
