Detection of human echolocator mouth-click signal using bio-inspired processing

Echolocation is a process to perceive the surrounding by analysing reflected echo from space via an active emission signal often utilize by animals such as bat, dolphin, and whale as their main sensing modality mainly for navigation purposes. For almost a century, the fundamental and understandin...

Full description

Saved in:

Bibliographic Details
Main Author:	Saleh, Nur Luqman
Format:	Thesis
Language:	English
Published:	2019
Subjects:	Echolocation (Physiology) - Case studies Echo sounding Auditory perception
Online Access:	http://psasir.upm.edu.my/id/eprint/89904/1/FK%202020%2036%20ir.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.89904
record_format	uketd_dc
spelling	my-upm-ir.899042021-12-06T02:39:39Z Detection of human echolocator mouth-click signal using bio-inspired processing 2019-12 Saleh, Nur Luqman Echolocation is a process to perceive the surrounding by analysing reflected echo from space via an active emission signal often utilize by animals such as bat, dolphin, and whale as their main sensing modality mainly for navigation purposes. For almost a century, the fundamental and understanding of development radar and sonar application have been inspired by animal echolocation until today. What is lesser known is that there is a group of humans (often blind people) who have developed amazing skills and proficiency in using echolocation in their daily life. They have converted their hearing sense into visual perception mainly for navigation. In recent years, revisit studies have revealed that the human echolocator mouth-click is preferable for echolocation process. However, technical knowledge on the detection scheme for human echolocator mouth-click has yet to be discovered. What is more, the detection of human mouth-click using matched filter leads to poor outcome due to having higher multiple local maxima and lower side-lobe level values of less than 3 dB. Thus, the aim of this thesis is to propose an improved detection process of human echolocator mouth-click by implementing a Bio-Inspired processing strategy. The process is inspired by the human auditory system (using Gammatone-Filter) in synthesizing sound signal into tonotopic (sub-band channel) prior relaying it to the human brain. Then, the individual channel is correlated and is absolute to obtain correlation output. Next, correlated outputs are summed and normalized to get a single correlation output, used for decision making upon the detection phase. Improved detection output is achieved by, i) significantly reducing the presence of multiple local maxima, and ii) higher side-lobe level (SLL) exceeding 10 dB for static and moving target scenarios in different frequency range experiments surpassing output from matched filter. Finally, the Bio-Inspired signal processing proposed in this thesis can be considered as reliable detection scheme for of human echolocator mouth-click signal. Echolocation (Physiology) - Case studies Echo sounding Auditory perception 2019-12 Thesis http://psasir.upm.edu.my/id/eprint/89904/ http://psasir.upm.edu.my/id/eprint/89904/1/FK%202020%2036%20ir.pdf text en public doctoral Universiti Putra Malaysia Echolocation (Physiology) - Case studies Echo sounding Auditory perception Raja Abdullah, Raja Syamsul Azmir
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Raja Abdullah, Raja Syamsul Azmir
topic	Echolocation (Physiology) - Case studies Echo sounding Auditory perception
spellingShingle	Echolocation (Physiology) - Case studies Echo sounding Auditory perception Saleh, Nur Luqman Detection of human echolocator mouth-click signal using bio-inspired processing
description	Echolocation is a process to perceive the surrounding by analysing reflected echo from space via an active emission signal often utilize by animals such as bat, dolphin, and whale as their main sensing modality mainly for navigation purposes. For almost a century, the fundamental and understanding of development radar and sonar application have been inspired by animal echolocation until today. What is lesser known is that there is a group of humans (often blind people) who have developed amazing skills and proficiency in using echolocation in their daily life. They have converted their hearing sense into visual perception mainly for navigation. In recent years, revisit studies have revealed that the human echolocator mouth-click is preferable for echolocation process. However, technical knowledge on the detection scheme for human echolocator mouth-click has yet to be discovered. What is more, the detection of human mouth-click using matched filter leads to poor outcome due to having higher multiple local maxima and lower side-lobe level values of less than 3 dB. Thus, the aim of this thesis is to propose an improved detection process of human echolocator mouth-click by implementing a Bio-Inspired processing strategy. The process is inspired by the human auditory system (using Gammatone-Filter) in synthesizing sound signal into tonotopic (sub-band channel) prior relaying it to the human brain. Then, the individual channel is correlated and is absolute to obtain correlation output. Next, correlated outputs are summed and normalized to get a single correlation output, used for decision making upon the detection phase. Improved detection output is achieved by, i) significantly reducing the presence of multiple local maxima, and ii) higher side-lobe level (SLL) exceeding 10 dB for static and moving target scenarios in different frequency range experiments surpassing output from matched filter. Finally, the Bio-Inspired signal processing proposed in this thesis can be considered as reliable detection scheme for of human echolocator mouth-click signal.
format	Thesis
qualification_level	Doctorate
author	Saleh, Nur Luqman
author_facet	Saleh, Nur Luqman
author_sort	Saleh, Nur Luqman
title	Detection of human echolocator mouth-click signal using bio-inspired processing
title_short	Detection of human echolocator mouth-click signal using bio-inspired processing
title_full	Detection of human echolocator mouth-click signal using bio-inspired processing
title_fullStr	Detection of human echolocator mouth-click signal using bio-inspired processing
title_full_unstemmed	Detection of human echolocator mouth-click signal using bio-inspired processing
title_sort	detection of human echolocator mouth-click signal using bio-inspired processing
granting_institution	Universiti Putra Malaysia
publishDate	2019
url	http://psasir.upm.edu.my/id/eprint/89904/1/FK%202020%2036%20ir.pdf
_version_	1747813591311974400

Detection of human echolocator mouth-click signal using bio-inspired processing

Similar Items