The Influence of Diffraction and Dispersion on the Fidelity of Degenerate Convolution
- 1 September 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Sonics and Ultrasonics
- Vol. 22 (5) , 347-354
- https://doi.org/10.1109/T-SU.1975.30817
Abstract
Both diffraction and dispersion degrade the signal processing fidelity of acoustic surface wave (ASW) convolvers. It is shown that both effects can be simulated on a model convolver by means of linear passive pre or post-distortion filters. In practice, a degree of compensation can be achieved by using inverse networks. Emphasis is placed on deriving design formulas that allow distortion levels to be estimated without extensive computation. Distortion network characteristics required are related to convolver layout. A number of typical design examples are considered.Keywords
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