TY  - BOOK
AU  - Cohen,Leon
TI  - Time-frequency analysis
T2  - Prentice Hall signal processing series
SN  - 9780135945322
U1  - 621.38223 23
PY  - 1995///
CY  - New Jersey
PB  - Prentice Hall PTR
KW  - Signal processing
KW  - Time-series analysis
KW  - Frequency spectra
N1  - Includes bibliographical references (p. 263-289) and index; 1. The time and frequency description of signals--
2. Instrantaneous frequency and the complex singnal--
3. The uncertainty principle--
4. Densities and characteristic functions--
5. The need for time-frequency analysis--
6. Time-frequency distributions: fundamental ideas--
7. The short-time fourier transform--
8. The wigner distributiojn--
9. General approach and the Kernel method--
10. Characteristic function operator method--
11. Kernel design for reduced interference--
12. Some distributions--
13. Further developments--
14. Positive distributions satisfying the marginals--
15. The representation of signals--
16. Density of a single variable--
17. Joint representations for arbitrary variables--
18. Scale--
20. Joint scale representations--

Bibliography--
Index
N2  - This book brings together—in simple language—the basic ideas and methods that have been developed to study natural and man-made signals whose frequency content changes with time—e.g., speech, sonar and radar, optical images, mechanical vibrations, acoustic signals, biological/biomedical and geophysical signals. Covers time analysis, frequency analysis, and scale analysis; time-bandwidth relations; instantaneous frequency; densities and local quantities; the short time Fourier Transform; time-frequency analysis; the Wigner representation; time-frequency representations; computation methods; the synthesis problem; spatial-spatial/frequency representations; time-scale representations; operators; general joint representations; stochastic signals; and higher order time-frequency distributions. Illustrates each concept with examples and shows how the methods have been extended to other variables, such as scale
ER  -