Some personal interests in other fields

Commercial Grade Implementation of NTU DSP Lab's Virtual Bass Technology for Use in Philips TVs

The objective of this NTU-Philips collaboration project was to develop a commercial grade implementation of NTU DSP Lab's Virtual Bass technology for use in Philips TVs. The real-time fixed-point digital signal processor TI C5509A was used to implement the algorithms. The frequency responses of the loudspeakers were measured to tune the algorithms and subjective listening experiments with 50 listeners were carried out to assess the audio quality as well as bass intensity. At the project closure, the know-hows were transferred to Philips staff.

Three-Dimensional (3-D) Vehicle Routing Problem for Urban Last-Mile Logistics
Last-mile logistics (LML) has been regarded as the most expensive and least efficient segment in a supply chain and is subject to the most pressing environmental concerns. This project presents a case study on urban LML in Singapore to highlight the key characteristics of close-proximity high-rise buildings. Additionally, this study proposes two novel vehicle routing problem models (3-DVRP and 3-DGVRP) for urban LML by extending the traditional VRP formulation from a two-dimensional to a three-dimensional plane to emphasize the importance of vertical travel distances in high-rise urban environments. Although often encountered in practice, the incorporation of both service time and vertical travel distance has not been previously modeled in the literature. Simulations and computational experiments were conducted to demonstrate the feasibility of the proposed 3-DVRP and 3-DGVRP for ULML.

Development of Fibre Bragg Grating (FBG) Based Multiplexer/Demultiplexer

Using Configurable Analog Device as an Interface for the Control of an Inverted Pendulum