What formed the bedrock upon which the telephone was constructed?
Answer
Expertise in acoustics and the physiology of speech gained from teaching the deaf
Bell's background deeply immersed in acoustics, human hearing, and speech mechanisms, largely stemming from his father's work and his own teaching experience, provided the necessary expertise for the telephone's foundation.

Related Questions
What formed the bedrock upon which the telephone was constructed?What system did Alexander Melville Bell develop that influenced his son's work?What immediate, practical purpose drove Bell's invention toward completion?What was the aim of the concept often termed the 'harmonic telegraph'?What famous phrase was spoken during the definitive breakthrough moment on March 10, 1876?On what date did Alexander Graham Bell file his patent application for the telephone?How did the initial telephone transmission differ electrically from the Morse Telegraph transmission?In what year was the Bell Telephone Company founded?What did the purpose of the telephone evolve to regarding business operations after commercialization?Which aspect of Bell's early career did he continue to champion throughout his life, despite the phone's commercial focus?What element of human communication did Bell’s goal emphasize retaining that the telegraph inherently lacked?