Biomimetic array signal processing based on dynamical properties of coupling auditory system

Hou, Yanli; Hu, Boning; Xian, Ji; Xia, Kewen

doi:10.1109/icsp.2016.7877880

Cited by 1 publication

(2 citation statements)

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“…For this description approach, Y 1 (s) and Y 2 (s) each consists of two transfer functions, where P(s) is a fourth-order function. In [35], partial fraction decomposition is used to minimize the structure of the system. This leads to a linear combination of two second-order transfer functions with coupling parameters only in the denominator:…”

Section: Lumped Mechanical System Model Of Coupled Tympanal Organsmentioning

confidence: 99%

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Direction-of-arrival estimation for acoustic signals based on direction-dependent parameter tuning of a bioinspired binaural coupling system

2023

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Bioinspired methods for sound source localization offer opportunities for resource reduction as well as concurrent performance improvement in contrast to conventional techniques. Usually, sound source localization requires a large number of microphones arranged in irregular geometries, and thus has high resource requirements in terms of space and data processing. Motivated by biology and using digital signal processing methods, an approach that adapts the coupled hearing system of the fly Ormia ochracea with a minimally distant two-microphone array is presented. Despite its physiology, the fly is able to overcome physical limitations in localizing low-frequency sound sources. By exploiting the filtering effect of the coupling system, the direction-of-arrival (DOA) of the sound is determined with two microphones at an intermediate distance of 0,06m. For conventional beamforming algorithms, these physical limitations would result in degraded localization performance. In this work, the bioinspired coupling system is analyzed and subsequently parameterized direction-sensitive for different directions of incidence of the sound. For the parameterization, an optimization method is presented which can be adopted for excitation with plane as well as spherical sound wave propagation. Finally, the method was assessed using simulated and measured data. For 90% of the simulated scenarios, the correct direction of incidence could be determined with an accuracy of less than 1° despite the use of a minimal distant two-microphone array. The experiments with measured data also resulted in a correct determination of the direction of incidence, which qualifies the bioinspired method for practical use in digital hardware system.

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Section: Lumped Mechanical System Model Of Coupled Tympanal Organsmentioning

confidence: 99%

“…Hou et al [33,35] have shown an approach to determine the most sensitive angle of incidence. Considering this, it is possible to change the characteristic and especially the most sensitive angle of incidence using the coupling parameters.…”

Section: Frequency Response Of Coupling System For Different Angles O...mentioning

confidence: 99%

Direction-of-arrival estimation for acoustic signals based on direction-dependent parameter tuning of a bioinspired binaural coupling system

2023

View full text Add to dashboard Cite

show abstract

Biomimetic array signal processing based on dynamical properties of coupling auditory system

Cited by 1 publication

References 11 publications

Direction-of-arrival estimation for acoustic signals based on direction-dependent parameter tuning of a bioinspired binaural coupling system

Direction-of-arrival estimation for acoustic signals based on direction-dependent parameter tuning of a bioinspired binaural coupling system

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