Objective detection and time-frequency localization of components within transient signals

Research output: Contribution to journalArticle

Standard

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Objective detection and time-frequency localization of components within transient signals

AU - Reinhold, Isabella

AU - Sandsten, Maria

AU - Starkhammar, Josefin

PY - 2018/4/1

Y1 - 2018/4/1

N2 - An automatic component detection method for overlapping transient pulses in multi-component signals is presented and evaluated. The recently proposed scaled reassignment technique is shown to have the best achievable resolution for closely located Gaussian shaped transient pulses, even in heavy disruptive noise. As a result, the method automatically detects and counts the number of transients, giving the center times and center frequencies of all components with considerable accuracy. The presented method shows great potential for applications in several acoustic research fields, where coinciding Gaussian shaped transients are analyzed. The performance is tested on measured data from a laboratory pulse-echo setup and from a dolphin echolocation signal measured simultaneously at two different locations in the echolocation beam. Since the method requires little user input, it should be easily employed in a variety of research projects.

AB - An automatic component detection method for overlapping transient pulses in multi-component signals is presented and evaluated. The recently proposed scaled reassignment technique is shown to have the best achievable resolution for closely located Gaussian shaped transient pulses, even in heavy disruptive noise. As a result, the method automatically detects and counts the number of transients, giving the center times and center frequencies of all components with considerable accuracy. The presented method shows great potential for applications in several acoustic research fields, where coinciding Gaussian shaped transients are analyzed. The performance is tested on measured data from a laboratory pulse-echo setup and from a dolphin echolocation signal measured simultaneously at two different locations in the echolocation beam. Since the method requires little user input, it should be easily employed in a variety of research projects.

UR - http://www.scopus.com/inward/record.url?scp=85046038356&partnerID=8YFLogxK

U2 - 10.1121/1.5032215

DO - 10.1121/1.5032215

M3 - Article

VL - 143

SP - 2368

EP - 2378

JO - J. Acoust. Soc. Am.

T2 - J. Acoust. Soc. Am.

JF - J. Acoust. Soc. Am.

SN - 1520-8524

IS - 4

ER -