School of Engineering Department of Electronic and Computer Engineering 153 Projects in Audio Signal Processing - A Summary on the Simulation of Sensorineural Hearing Loss Supervisor: CHAU Kevin / ECE Student: YANG Jingwen / COSC Course: UROP1100, Spring This report reviews the operating principles of the hearing loss simulator in our previous work and presents a summary of additional features from others’ work that we have not included. Typical consequences of sensorineural hearing loss are 1) an elevated threshold of hearing, 2) an abnormal loudness growth with sound level, 3) a reduced frequency selectivity, and 4) an unaffected just noticeable difference in intensity. While our current simulator only models threshold elevation and loudness recruitment, the latter two effects can be incorporated by applying the signal processing schemes proposed here. These upgrades should enable a more accurate modelling of hearing loss, from which we can develop a better compensating algorithm for the hearing impaired. Nanostructured Chemical Sensors and Sensor Systems Supervisor: FAN Zhiyong / ECE Student: CAI Yuxiang / ELEC Course: UROP1100, Summer Currently, robots can not only see with the help of image processing technology but also hear with voice processing technology. Chemical sensor will enable the mechines to obtain a sence of smell. This technology will be widely applied in people's daily life. For example, detecting the dangerous gases at factories and adjusting air circulation at home both need a sensitive electronic nose. Robots with chemical sensors can also replace the detection dogs in the future. We choose AAO (anodic aluminum oxide) as the material of sensors. The reasons are as follow: First, the surface to volume ratio of AAO is high. Second, AAO is a material with a stable performance. Finally, the cost of AAO is acceptable. The direction where we are exploring is to balance the precision, cost and volumn of chemical sensors. Nanostructured Chemical Sensors and Sensor Systems Supervisor: FAN Zhiyong / ECE Student: YANG Zheng / ELEC Course: UROP1100, Summer For this summer, from knowing nothing about perovskite and its applications and groupmates’ work to have a brief knowledge about this filed and how their work conduct, I have learned many things. For the first two months I mainly learn about how to make the anodic aluminum oxide. And the last month I start to learn some hardware knowledge. So, for this report, I mainly talk about the process to make the AAO and elaborate each details and what I have learned from this process. As the end of this report, I will briefly talk about my feelings after a summer’s study.