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Content Provider | IET Digital Library |
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Author | Abdullah, Raja S. A. R. Saleh, Nur L. Ahmad, Sharifah M. S. Salah, Asem A. Rashid, Nur E. A. |
Abstract | Human echolocation is a technique used by small group of people (normally blind persons) to observe their surrounding via emitting an active signal (usually tongue click) and analyse the return echo. This skill allows them to navigate safely by ‘seeing through sound’. Remarkable performances upon echolocating have attracted scholars’ attention from multidiscipline field including psychophysical and engineering. Study of waveform diversity has reported the signal is wideband, consisting of multiple frequency components with exponential decay factor that probably made up the entire unique signal. As such, wideband perspective is considered during ambiguity function analysis using wide-band ambiguity function method. The waveform analysis continues and reported optimum autocorrelation function is achieved by adopting a bio-inspired technique, which incorporated gammatone-filter processing. It will be interesting to synthesise the waveform using gammatone-filter approaches prior to relay it into ambiguity function process for analysis. Therefore, it is worth to explore its output results in this paper, which hold new findings that may help to understand how these humans achieve an optimum performance upon echolocating including ambiguity function characteristic. Thus, the new knowledge explored in this paper could be beneficial in emerging concept for new development in radar and sonar system application in near future. |
Starting Page | 6935 |
Ending Page | 6939 |
Page Count | 5 |
Volume Number | 2019 |
e-ISSN | 20513305 |
Issue Number | Issue 20, Oct (2019) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2019/20 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0535 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2019-07-11 |
Access Restriction | Open |
Rights License | Creative Commons Attribution -Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) |
Subject Keyword | Active Signal Ambiguity Function Analysis Ambiguity Function Process Audio Signal Processing Bioinspired Technique Blind Persons Cognition Correlation Method Echo Analysis Exponential Decay Factor Filtering Method in Signal Processing Filtering Theory Gammatone-filter Processing Human Echolocator Waveform Mathematical Analysis Multiple Frequency Component Optimum Autocorrelation Function Radar Equipment Radar Signal Processing Radar System Application Signal Processing Theory Sonar Signal Processing Sonar System Application Speech And Audio Signal Processing System And Application Tongue Click Waveform Analysis Waveform Diversity Wideband Ambiguity Function Method |
Content Type | Text |
Resource Type | Article |
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