Category Archives: Conference/Workshop

2026 Joint Convention, the Hokkaido Chapters of the Institutes of Electrical and Information Engineers

Mr. Saeki and Mr. Kawashima presented their works at 2026 Joint Convention, the Hokkaido Chapters of the Institutes of Electrical and Information Engineers, which was held at Hokkaido University of Science on Oct 31st – Nov 1st.

  • Yuya Saeki, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “An Evaluation of False-Positive Reduction Using Signal Power in Zero-Crossing-Rate-Based Ambulance Siren Detection with Difference Preprocessing,” Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, p. 102, Oct. 2026 (in Japanese). [URL]
  • Taiyoh Kawashima, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “Implementation of LUT-Based Fixed-Point Logarithmic Approximation and Evaluation of Its Resource Usage,” Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, p. 112, Nov. 2026 (in Japanese). [URL]

A student networking event was held during this convention. Students made presentations about their university, research activity, and student activity. From our laboratory, Mr. Kawashima, the treasurer of IEEE Hokkaido University Student Branch, gave a presentation on the activities of the IEEE Student Branch and the benefits of establishing a branch.

2026 Engineering Sciences Society Symposium (ESSS 2026)

At the 2026 Engineering Sciences Society Symposium (ESSS 2026), held in Okinawa from October 30 to November 1, Mr. Chimkono, Mr. Lin, Mr. Hori and Mr. Ando presented the following papers.

  • Aaron William Chimkono, Hiroshi Tsutsui, Takeo Ohgane, “Cross-Weather LOWO Evaluation of an Edge-Density Parking Occupancy Detector: Per-Slot Failure Analysis,” Proceedings of Engineering Sciences Society Symposium (ESSS), Oct. 2026.
  • Juzheng Lin, Hiroshi Tsutsui, Takeo Ohgane, “A Two-Stage Framework with a TFC-TDF-UNet-Based Second Stage for Six-Stem Music Source Separation,” Proceedings of Engineering Sciences Society Symposium (ESSS), Oct. 2026.
  • Taishin Hori, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “An Accuracy Evaluation of Unsupervised Anomalous Sound Detection for Machine Condition Monitoring Using a Spiking Neural Network with Fixed-Point Log-Mel Features,” Proceedings of Engineering Sciences Society Symposium (ESSS), Oct. 2026.
  • Shota Ando, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “Design of a Single-Port SRAM-Based Configurable-Length FFT IP Core with Four-Cycle Butterfly Operations Using a Single Multiplier,” Proceedings of Engineering Sciences Society Symposium (ESSS), Oct. 2026.

2026 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2026)

At 2026 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2026), held in Busan from October 27 to 30, Mr. Chimkono, Mr. Lin and Mr. Zhao presented the following papers.

  • Aaron William Chimkono, Hiroshi Tsutsui, Takeo Ohgane, “Training-Free Snow-Resilient Parking Occupancy Detection Using ROI-First PiDiNet-Based Edge-Density Thresholding,” Proceedings of International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Oct. 2026.
  • Juzheng Lin, Hiroshi Tsutsui, Priyadarsi Nanda, Takeo Ohgane, “A Six-Stem Music Source Separation Architecture Based on TFC-TDF-UNet with Additional Models for Guitar and Piano,” Proceedings of International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Oct. 2026.
  • Chenyu Zhao, Taishin Hori, Hiroshi Tsutsui, Takeo Ohgane, “Evaluation of LUT Size Effects in Fixed-Point Approximation of Logarithmic Computation for Hardware-Oriented Log-Mel-Based Feature Extraction,” Proceedings of International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Oct. 2026.

Participation of Fourth-Year Students in the 30th PARTHENON Workshop

Ando, a first-year master’s student, and Nakamura, a fourth-year undergraduate student, participated in the 30th PARTHENON Workshop, organized by the nonprofit PARTHENON Society, held at the Tokyo Campus of the Institute for Small Business Management and Technology, Organization for Small & Medium Enterprises and Regional Innovation, JAPAN, from Friday, August 28 to Sunday, August 30 (Tsutsui also participated). They designed hardware using the hardware description language NSL, developed C programs to run on the SN/X CPU, which was also designed using NSL, and implemented the resulting hardware/software systems on the DE10-Lite platform. They also gained hands-on experience with logic synthesis, placement and routing, GDS generation, and static timing analysis (STA) using the Coriolis Open EDA Tool.

Research Presentations by Mr. Saeki at the BCT Workshop

Mr. Saeki gave a presentation on his research at the BCT Workshop, which was held in Kitami on July 16 and 17.

  • Yuya Saeki, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “Evaluation of Differential Order in Ambulance Siren Detection Using Zero-Crossing Rate and Differential Preprocessing for Low-Power Integrated Circuit Implementation,” ITE Technical Report, Vol. 50, No. 19, pp. 5-8, BCT2026-44, 16-17 Jul. 2026 (in Japanese). [URL]

After the workshop, we also participated in a tour of the Argo Graphics Kitami Curling Hall.

IEICE Young Researcher’s Award (D1 Chenyu Zhao)

Mr. Chenyu Zhao, a first-year doctoral student (D1), received the IEICE Young Researcher’s Award for the following presentation at the IEICE Society Conference 2025

  • Chenyu Zhao, Yuzuki Morikawa, Hiroshi Tsutsui, Takeo Ohgane, “Design of a Streaming-Based Resource-Efficient Mel Filter Bank Architecture for Real-Time Mel Spectrum Extraction on FPGA,” IEICE Society Conference, p. 118, A-14-15, Sep. 2025. [URL]

IEICE Hokkaido Section Student Activity Committee Internet Symposium 2026 (FY 2025) and Student Branch Advisors Award

Mr. Iura and Mr. Kawashima presented their works at IEICE Hokkaido Section Student Activity Committee Internet Symposium 2026 (FY 2025), which was held online from Feb. 20 to 27. Mr. Iura received the Hokkaido Section Student Branch Advisors Award.

  • Takayuki Iura, Hiroshi Tsutsui, Takeo Ohgane, “Evaluation of Spatial Noise Reduction Performance in Active Noise Control Using Multiple Secondary Loudspeakers for Snowplow Noise Reduction,” Proceedings of IEICE Hokkaido Section Student Activity Committee Internet Symposium, Feb. 2026 (in Japanese). [URL]
  • Taiyoh Kawashima, Yuito Ishisaki, Hiroshi Tsutsui, Takeo Ohgane, “An Evaluation of the Impact of Sleep Functions on Energy Consumption Based on Experimental Measurements in a LoRa-Based Environmental Sensing System,” Proceedings of IEICE Hokkaido Section Student Activity Committee Internet Symposium, Feb. 2026 (in Japanese). [URL]

2025 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2025)

At the 2025 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2025), held in Bandung from November 4 to 7, Mr. Yamamura and Ms. Morikawa presented the following papers.

  • Naoya Yamamura, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “Evaluation of Bit-Width Effects in Fixed-Point FPGA-Optimized MFCC Computation via Software Simulation for HMM-Based Phrase Speech Recognition,” Proceedings of International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Nov. 2025.
  • Yuzuki Morikawa, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, “Accuracy Evaluation of a Streaming-Based Resource-Efficient Mel Filter Bank Architecture with Fixed-Point Based Design Approaches,” Proceedings of International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), Nov. 2025.

2025 Joint Convention, the Hokkaido Chapters of the Institutes of Electrical and Information Engineers

Mr. Shimizu, Mr. Iura, Mr. Yamamura, Mr. Hori, and Mr. Kawashima presented their works at 2025 Joint Convention, the Hokkaido Chapters of the Institutes of Electrical and Information Engineers, which was held at Muroran Institute of Technology on Nov 2nd-3rd.

  • Kodai Shimizu, Hiroshi Tsutsui, Takeo Ohgane, "An Evaluation of Parking Status Change Detection Using GMM-Based Analysis of Background-Subtraction Difference Distributions for Parking Lot Monitoring Systems in Snowy Conditions," Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, pp. 25-26, Nov. 2025 (in Japanese). [URL]
  • Taiyoh Kawashima, Yuito Ishisaki, Hiroshi Tsutsui, Takeo Ohgane, "Experimental Evaluation of Energy Consumption for a LoRa-based Environmental Sensing System," Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, p. 217, Nov. 2025 (in Japanese). [URL]
  • Takayuki Iura, Hiroshi Tsutsui, Takeo Ohgane, "Evaluation of the Effect of Loudspeaker Placement on Active Noise Control Performance for Indoor Reduction of Outdoor Noise," Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, p. 112, Nov. 2025 (in Japanese). [URL]
  • Taishin Hori, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, "An Evaluation of Parameters for Log-Mel Spectrum Calculation in Anomalous Sound Detection Using Spiking Neural Networks," Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, p. 113, Nov. 2025 (in Japanese). [URL]
  • Naoya Yamamura, Chenyu Zhao, Hiroshi Tsutsui, Takeo Ohgane, "Evaluation of Bit-Width Effects in Fixed-Point FPGA-Optimized MFCC Computation via Software Simulation for HMM-Based Phrase Speech Recognition Using Delta Features," Joint Conference of Electrical, Electronics and Information Engineers in Hokkaido, p. 114, Nov. 2025 (in Japanese). [URL]

A student networking event was held during this convention. Students made presentations about their university, research activity, and student activity. From our laboratory, Ms. Morikawa, the treasurer of IEEE Hokkaido University Student Branch gave a presentation on the activities of the IEEE Student Branch and the benefits of establishing a branch.

Hokuyukai Alma Mater Networking Event 2025

Mr. Yuito Ishisaki made a poster presentation entitled “A Measurement of Packet Delivery Rate and Signal Strength in LoRa Communication in Urban and Suburban Areas of Sapporo” at Hokuyukai Alma Mater Networking Event (in Japanese).