Hey guys! My name is Zilin Zeng; you can also call me Daniel. I am currently a junior in Audio and Music Engineering and my personal interest lies in loudspeakers and headphones. I have an idea of setting the research topic on acoustic related with glass cups since I have seen a lot of youtube videos about making different pitches with cups of different shapes and with cups containing different water volume. I have also seen related research about the harmonics of a bottle under different frequencies. I am wondering if I can get some inspiration from those equations about fourier series taught in AME233.