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- W2012203583 abstract "In the ultrasonic pulse-echo system, the reflection characteristics of the acoustic system are reproduced faithfully by signal processing to remove electroacoustic conversion distortion contained in the pulse-echo signal. The proposed signal processing has the feature that the two contradictory requirements for high resolution and high sensitivity can both be satisfied. Another feature is that the single-peak impulse characteristics can easily be realized. Problems left to be solved for practical applications are the reduction of the processing noise and the improvement of the processing speed. A possible solution is to utilize effectively the a priori knowledge about the distortion characteristics. This paper presents a basic physical discussion on the convolution model for the pulse-echo system. Presented also is a clear description of the distortion function. Based on the results, a high-speed signal-processing system with on-line recursive computation is proposed using the least-square transversal filter in the time domain. The solution to the forementioned problem toward practical application is discussed by examining the computation method for the filter coefficients with smaller processing noise. At the end of this paper, an evaluation experiment is performed for the proposed signal-processing system, indicating that the reflection characteristics of the acoustic part can be restored with small processing noise and high quality." @default.
- W2012203583 created "2016-06-24" @default.
- W2012203583 creator A5056448365 @default.
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- W2012203583 date "1988-05-01" @default.
- W2012203583 modified "2023-09-27" @default.
- W2012203583 title "Processing of ultrasonic pulse-echo signals to remove electroacoustic conversion distortion" @default.
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- W2012203583 doi "https://doi.org/10.1002/ecja.4410710503" @default.
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