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Acoustics of auditoriums ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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64,023 braille cells · 68 embossed pages at 40×25 · 195 unrepresentable characters omitted

⠠⠏⠕⠺⠑⠗⠲⠴⠀⠠⠏⠓⠽⠎⠊⠉⠁⠇⠀⠠⠗⠑⠧⠊⠑⠺⠂⠀⠠⠧⠕⠇⠲⠀⠼⠁⠋⠂⠀
⠏⠏⠲⠀⠼⠉⠛⠃⠤⠉⠛⠙⠂⠀⠼⠁⠊⠚⠉⠲⠀⠀⠀⠀⠀⠼⠁⠚⠀⠠⠛⠲⠀⠠⠚⠛⠑⠗⠲⠀
⠦⠠⠵⠥⠗⠀⠠⠞⠓⠑⠕⠗⠊⠑⠀⠙⠑⠎⠀⠠⠝⠁⠉⠓⠓⠁⠇⠇⠎⠲⠴⠀
⠠⠎⠊⠞⠵⠥⠝⠛⠎⠃⠑⠗⠊⠉⠓⠞⠑⠀⠙⠑⠗⠀⠀⠀⠀⠀⠀⠀⠀
⠠⠅⠁⠊⠎⠑⠗⠇⠊⠉⠓⠑⠀⠠⠁⠅⠁⠙⠲⠀⠙⠑⠗⠀⠠⠺⠊⠎⠎⠑⠝⠎⠉⠓⠁⠋⠞⠑⠝⠀
⠊⠝⠀⠠⠺⠊⠑⠝⠂⠀⠠⠍⠁⠞⠓⠤⠝⠁⠞⠥⠗⠺⠲⠀⠀⠀⠀⠀⠀⠀⠀⠠⠅⠇⠁⠎⠎⠑⠆⠀
⠠⠃⠙⠲⠀⠠⠠⠉⠭⠭⠲⠀⠠⠁⠃⠞⠲⠀⠼⠁⠁⠀⠁⠲⠀⠠⠍⠁⠊⠂⠀⠼⠁⠊⠁⠁⠲⠀⠀⠀
⠼⠁⠁⠀⠠⠎⠉⠊⠑⠝⠉⠑⠂⠀⠠⠧⠕⠇⠲⠀⠼⠉⠑⠂⠀⠏⠲⠀⠼⠓⠉⠉⠂⠀⠼⠁⠊⠁⠃⠲
⠀⠀⠀⠀⠀⠼⠁⠃⠀⠠⠁⠗⠉⠓⠲⠀⠠⠟⠥⠁⠗⠞⠑⠗⠇⠽⠀⠕⠋⠀⠠⠓⠁⠗⠧⠁⠗⠙⠀
⠠⠥⠝⠊⠧⠑⠗⠎⠊⠞⠽⠂⠀⠠⠍⠁⠗⠉⠓⠂⠀⠼⠁⠊⠁⠃⠲⠀⠀⠀⠀⠀⠼⠁⠉⠀
⠠⠕⠎⠃⠕⠗⠝⠑⠀⠠⠗⠑⠽⠝⠕⠇⠙⠎⠲⠀⠠⠏⠗⠕⠉⠲⠀⠕⠋⠀⠠⠗⠕⠽⠁⠇⠀
⠠⠎⠕⠉⠲⠂⠀⠠⠧⠕⠇⠲⠀⠠⠠⠭⠭⠊⠊⠂⠀⠏⠲⠀⠼⠑⠉⠁⠂⠀⠼⠁⠓⠛⠙⠲⠀⠀⠀⠀
⠼⠁⠙⠀⠠⠚⠕⠎⠑⠏⠓⠀⠠⠓⠑⠝⠗⠽⠂⠀⠦⠠⠗⠑⠏⠕⠗⠞⠀⠕⠋⠀⠞⠓⠑⠀
⠠⠇⠊⠛⠓⠞⠓⠕⠥⠎⠑⠀⠠⠃⠕⠁⠗⠙⠀⠕⠋⠀⠞⠓⠑⠀⠠⠥⠝⠊⠞⠑⠙⠀⠀⠀⠀⠀⠀⠀
⠠⠎⠞⠁⠞⠑⠎⠀⠋⠕⠗⠀⠞⠓⠑⠀⠽⠑⠁⠗⠀⠼⠁⠓⠛⠙⠲⠴⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠠⠚⠲⠀⠠⠞⠽⠝⠙⠁⠇⠇⠂⠀⠠⠏⠓⠊⠇⠲⠀⠠⠞⠗⠁⠝⠎⠲⠂⠀⠼⠁⠓⠛⠙⠲⠀⠀⠀⠀
⠼⠁⠑⠀⠠⠎⠁⠃⠊⠝⠑⠂⠀⠠⠑⠝⠛⠊⠝⠑⠑⠗⠊⠝⠛⠀⠠⠗⠑⠉⠕⠗⠙⠂⠀⠠⠧⠕⠇⠲
⠀⠼⠋⠁⠂⠀⠏⠲⠀⠼⠛⠛⠊⠂⠀⠼⠁⠊⠁⠚⠲⠀⠠⠺⠁⠞⠎⠕⠝⠂⠀⠀⠀⠀⠀⠀⠀⠀
⠠⠑⠝⠛⠊⠝⠑⠑⠗⠊⠝⠛⠀⠠⠗⠑⠉⠕⠗⠙⠂⠀⠠⠧⠕⠇⠲⠀⠼⠋⠛⠂⠀⠏⠲⠀
⠼⠃⠋⠑⠂⠀⠼⠁⠊⠁⠉⠲⠀⠀⠀⠀⠀⠼⠁⠋⠀⠠⠎⠁⠃⠊⠝⠑⠀⠁⠝⠙⠀
⠠⠺⠁⠞⠎⠕⠝⠲⠀⠠⠊⠃⠊⠙⠲⠀⠀⠀⠀⠀⠼⠁⠛⠀⠠⠇⠁⠀⠠⠝⠁⠞⠥⠗⠑⠀
⠶⠠⠏⠁⠗⠊⠎⠶⠂⠀⠠⠁⠏⠗⠊⠇⠀⠼⠃⠙⠂⠀⠼⠁⠊⠚⠊⠲⠀⠀⠀⠀⠀⠼⠁⠓⠀
⠠⠗⠁⠽⠇⠑⠊⠛⠓⠀⠦⠠⠞⠓⠑⠕⠗⠽⠀⠕⠋⠀⠠⠎⠕⠥⠝⠙⠂⠴⠀⠠⠧⠕⠇⠲⠀
⠠⠠⠊⠊⠂⠀⠀⠼⠃⠓⠉⠲⠀⠀⠀⠀⠀⠼⠁⠊⠀⠠⠗⠁⠽⠇⠑⠊⠛⠓⠂⠀⠊⠃⠊⠙⠂⠀
⠼⠃⠓⠉⠲⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠞⠗⠁⠝⠎⠉⠗⠊⠃⠑⠗⠄⠎⠀⠠⠝⠕⠞⠑⠎⠀⠀⠀⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.