On echo intervals in gravitational wave echo analysis

Pulse - Echo Shear Wave Transducer

Type and size are the most important defect characteristics that need to oe determined for reliable prediction of the remaining service lifetime of a defective structure or part. The analytical and supporting experimental results presented in this paper concern a universal ultrasonic defect-identificationand-subsequent-sizing method. The conceived satellite-pulse technique (SPT) is based on the...

Genetic algorithm for Echo cancelling

In this paper, echo cancellation is done using genetic algorithm (GA). The genetic algorithm is implemented by two kinds of crossovers; heuristic and microbial. A new procedure is proposed to estimate the coefficients of adaptive filters used in echo cancellation with combination of the GA with Least-Mean-Square (LMS) method. The results are compared for various values of LMS step size and diff...

Improved Analysis of ECHO-256

ECHO-256 is a second-round candidate of the SHA-3 competition. It is an AESbased hash function that has attracted a lot of interest and analysis. Up to now, the best known attacks were a distinguisher on the full internal permutation and a collision on four rounds of its compression function. The latter was the best known analysis on the compression function as well as the one on the largest nu...

Analysis-by-Synthesis Echo Watermarking

The concept of echo hiding was first proposed by Bender et al. in 1996 (Gruhl, Lu, & Bender, 1996). As a new technology, it is remarkably easy to materialize. In comparison to other audio watermarking techniques, echo hiding with many outstanding features is extensively adopted in various audio watermark applications. The conventional scheme of embedding watermarks on audio signals is to add ra...

Dynamic Object Analysis in Echo Imaging