SciHi2026 Session 7 | Dr Monika Aggarwal | Signal Processing: A Perspective | Oct 03, 2026

How do we, and our machines, make sense of the signals all around us? Dr. Monika Aggarwal starts with a jumbled sentence your brain can still read, then shows what signal processing is: detecting, locating, recognising and understanding a signal. She covers how the ear hears in frequencies, sensors that act as eyes and ears for machines, how GPS finds you, and how much of the universe we still do not know. Problem statements for SciHi teams: 1. Sensor data fusion: combine data from several sensors to understand something better, such as health from body signals, local air quality, or whether it will rain. 2. Spotting fakes: tell whether an image, audio clip or video is real or fake. Speaker Dr. Monika Aggarwal Professor, Centre for Applied Research in Electronics (CARE), IIT Delhi Chapters 0:00 Intro 0:11 What is signal processing? 5:03 A man in a café 7:47 Eyes and ears for machines 13:32 Who is speaking? 20:41 How GPS finds you 22:34 So much we do not know 27:59 Problems to work on Recorded live with school students on 3 October 2026, during SciHi 2026. English subtitles. Videos played during the live session are not included. SciHi 2026 is run by Dayalbagh Educational Institute, Agra. Beyond the Stars, for the Planet. scihi.in