What technological and societal forces spurred the radical transformation in acoustic needs during the late 19th and early 20th centuries?

Answer

Industrialization and the rise of recording technology.

The late 19th and early 20th centuries brought profound changes that redefined the problem of noise. Industrialization introduced overwhelming mechanical noise from machinery and new electrical infrastructure. Simultaneously, the development of recording technology meant that unwanted ambient noise (like machinery rumble) became a direct obstacle to art and commerce by corrupting recordings. This created a demand for quantified solutions that simply stacking thicker bricks could no longer satisfy, pushing acoustic science toward quantification and engineered materials.

What technological and societal forces spurred the radical transformation in acoustic needs during the late 19th and early 20th centuries?
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