Chibuzo Joseph Nnonyelu

Publications

Articles in journals
Conference papers
Doctoral theses, monographs

Articles in journals

Ikeagwuani, C. C. , Nnonyelu, C. J. , Oti, M. C. , Ude, E. J. & Alexander, T. C. (2025). A posteriori constrained bio-inspired algorithm for enhancing strength and resilient modulus of soft subgrade soil. Road Materials and Pavement Design,  

Ikeagwuani, C. C. , Nnonyelu, C. J. & Usanga, I. N. (2024). Bioinspired Algorithm for Performance Evaluation of Biopolymerized Expansive Subgrade Soil Blended with Industrial Waste Additive. International Journal of Geomechanics, vol. 24: 12  

Ikeagwuani, C. C. , Nnonyelu, C. J. & Alexander, T. C. (2024). Improvement of soft clay soil with a combination of pre-gelatinized corn starch and nanoparticle agro waste : A multi-objective grey wolf optimizer approach. Physics and Chemistry of the Earth, vol. 135  

Anioke, C. L. & Nnonyelu, C. J. (2024). Multipaths’ statistics for scatterers with inverted elliptic–parabolic spatial density around the mobile. Physical Communication, vol. 62  

Nnonyelu, C. J. , Jiang, M. , Adamopoulou, M. & Lundgren, J. (2024). Performance Analysis of Cardioid and Omnidirectional Microphones in Spherical Sector Arrays for Coherent Source Localization. Sensors, vol. 24: 23    

Nnonyelu, C. J. & Wong, K. T. (2024). Two Cardioid Sensors in Perpendicular Colocation – Their “Spatial Matched Filter" Beam Steering. IEEE Sensors Journal, vol. 24: 9, pp. 15033-15045.  

Zheng, J. S. , Wong, K. T. , Nnonyelu, C. J. & Song, A. Y. (2024). Unequal Directivity Orders Between Two Figure-8 Sensors Perpendicularly Colocated with a Pressure Sensor – Their “Spatial Matched Filter” Beam Steering. IEEE Transactions on Aerospace and Electronic Systems, vol. 60: 6, pp. 7575-7594.  

Jiang, M. , Nnonyelu, C. J. , Lundgren, J. , Thungström, G. & Sjöström, M. (2023). A Coherent Wideband Acoustic Source Localization Using a Uniform Circular Array. Sensors, vol. 23: 11  

Nnonyelu, C. J. , Jiang, M. & Lundgren, J. (2023). Spherical-sector harmonics domain processing for wideband source localization using spherical-sector array of directional microphones. Journal of the Acoustical Society of America, vol. 153: 3_supplement, pp. A54-A54.  

Nnonyelu, C. J. , Jiang, M. & Lundgren, J. (2022). A Lower Bound on the Estimation Variance of Direction-of-Arrival and Skew Angle of a Biaxial Velocity Sensor Suffering from Stochastic Loss of Perpendicularity. Sensors, vol. 22: 21  

Du, S. S. , Wong, K. T. , Song, Y. , Nnonyelu, C. J. & Wu, Y. I. (2022). Higher-order figure-8 microphones/hydrophones collocated as a perpendicular triad—Their “spatial-matched-filter” beam steering. Journal of the Acoustical Society of America, vol. 151: 2, pp. 1158-1170.    

Nnonyelu, C. J. , Okide, C. P. & Ahaneku, M. A. (2021). Angle-of-arrival and time-of-arrival statistics of multipaths arising from scatterers on an elliptical disc with conic spatial density around the mobile. Physical Communication, vol. 49

Nnonyelu, C. J. , Morris, Z. N. & Madukwe, C. A. (2021). On the Performance of L- and V-Shaped Arrays of Cardioid Microphones for Direction Finding. IEEE Sensors Journal, vol. 21: 2, pp. 2211-2218.

Nnonyelu, C. J. , MADUKWE, C. & MADUKWE, K. (2020). Fully steerable collocated first-order cardioid microphone array acoustic beam-pattern. Przeglad Elektrotechniczny, vol. 96: 12, pp. 76-80.  

Nnonyelu, C. J. , Wong, K. T. & Lee, C. H. (2020). Higher-order figure-8 sensors in a pair, skewed and collocated—Their azimuthal “spatial matched filter” beam-pattern. Journal of the Acoustical Society of America, vol. 147: 2, pp. 1195-1206.

Nnonyelu, C. J. , Wong, K. T. & Wu, Y. I. (2019). Cardioid microphones/hydrophones in a collocated and orthogonal triad—A steerable beamformer with no beam-pointing error. Journal of the Acoustical Society of America, vol. 145: 1, pp. 575-588.

Nnonyelu, C. J. (2019). Rules-of-thumb to design a uniform spherical array for direction finding—Its Cramér–Rao bounds’ nonlinear dependence on the number of sensors. Journal of the Acoustical Society of America, vol. 145: 2, pp. 714-723.

Wong, K. T. , Nnonyelu, C. J. & Wu, Y. I. (2018). A Triad of Cardioid Sensors in Orthogonal Orientation and Spatial Collocation—Its Spatial-Matched-Filter-Type Beam-Pattern. IEEE Transactions on Signal Processing, vol. 66: 4, pp. 895-906.

Conference papers

Nnonyelu, C. J. , Jiang, M. , Adamopoulou, M. & Lundgren, J. (2024). A Machine- Learning -based approach to Direction-of-arrival Sectorization using Spherical Microphone Array. In 2024 IEEE 13rd Sensor Array and Multichannel Signal Processing Workshop (SAM).  

Lundgren, J. , Jiang, M. , Laino, V. , Gallo, V. , Carratù, M. & Nnonyelu, C. J. (2024). Accuracy Impact of Increased Measurement Quality when using Pretrained Networks for Classification. In Conference Record - IEEE Instrumentation and Measurement Technology Conference.  

Adamopoulou, M. , Jiang, M. , Nnonyelu, C. J. , Carratù, M. , Liguori, C. & Lundgren, J. (2024). Improving Cardiac Auscultation Signal Quality by using 4-Channel Stethoscope Array. In Conference Record - IEEE Instrumentation and Measurement Technology Conference.  

Jiang, M. , Nnonyelu, C. J. , Lundgren, J. , Sjöström, M. , Thungström, G. & Gao, S. (2022). Performance Comparison of Omni and Cardioid Directional Microphones for Indoor Angle of Arrival Sound Source Localization. In Conference Record - IEEE Instrumentation and Measurement Technology Conference.  

Nnonyelu, C. J. , Lee, C. H. & Wong, K. T. (2018). Directional pointing error in “spatial matched filter” beamforming at a tri-Axial velocity-sensor with non-orthogonal axes. In Proceedings of Meetings on Acoustic.. pp. 1--7.

Nnonyelu, C. J. , Lee, C. H. & Wong, K. T. (2017). Two biaxial velocity-sensors of non-identical orientation – their “spatial matched filter” beam-pattern’s pointing error. In Proceedings of Meetings on Acoustics.. pp. 1--8.  

Doctoral theses

Nnonyelu, C. J. (2018). An array of directional sensors (cardioid sensors or figure-8 sensors), diversely orientated but spatially collocated : their beam-patterns. Dis. Hong Kong : Pao Yue-kong Library, The Hong Kong Polytechnic University, 2018 (Hong Kong Polytechnic University -- Dissertations : )