Environmental sounds: acquisition, analysis, and representation

Environmental sounds;Digital signal processing

Altaf, Muhammad Umair Bin ; Juang, Biing-Hwang (Fred) Electrical and Computer Engineering Clements, Mark Xie, Yao Anderson, David V. Bhatti, Pamela T. ; Juang, Biing-Hwang (Fred)

University:Georgia Institute of Technology

Department:Electrical and Computer Engineering

关键词: Environmental sounds;    Digital signal processing;   

Others  :  https://smartech.gatech.edu/bitstream/1853/53953/1/ALTAF-DISSERTATION-2015.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

The dissertation presents the design and development of a systematicsignal analysis and representation framework beyond short-time Fourierpower spectrum for sounds, in particular environmental sounds. Thisframework is consistent with the underlying assumptions of theanalysis method and its elements are correlated with humanperception. The sound signal has to conform to certain conditions forits power spectrum to have a physical and perceptual meaning. Wecontend that very few environmental sounds readily meet these criteriaand argue that the quantities that are traditionally used to describesounds need to be repurposed and, if necessary, redefined to representsounds by non-Fourier means. We propose a perceptuo-analyticorganization of sounds so that any environmental sound can be analyzedbased on its signal characteristics and perception.We present environmental sound acquisition in the context ofcollection and annotation of a database for the footstep sounds, acommon environmental sound, and show that it can be represented bythese unconventional means and further analyzed to producedescriptions which are obscured with the traditional analysis. Wepresent a novel application of extracting gait characteristics fromthe footstep sounds which is enabled by the proposed framework.