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Dr . Erica Walker is a public health researcher and the founder of Noise and the City and the Community Noise Lab. She's been tracking the impact of noise on communities in Boston\\xa0 as well as in other cities.\\xa0 In this interview, she talks about how she was personally affected by noise and how it inspired her to help others. She stresses the importance of quantifying how noise makes people feel and how it increases their stress levels, not just tracking decibel readings.