1: S1 E1 - Pilot

2: S1 E2 - The Big Bran Hypothesis

Referenced Works: The Paper [https://www.leonardsax.com/wp-content/uploads/2015/01/2010-Sax-hearing.pdf] 2kHz "The Big Bang Theory" The Big Bran Hypothesis (TV Episode 2007) - IMDb [https://www.imdb.com/title/tt1091289/]

1: S1 E1 - Pilot

Referenced Works: "The Big Bang Theory" Pilot (TV Episode 2007) - IMDb [https://www.imdb.com/title/tt0775431/?ref_=tt_ep_pr]