Present knowledge of telephone transmission in noisy rooms, with special reference to Diesel engine rooms on board motor ship; review of earlier work on damping of noise in telephone reception in noisy workshops and power plants, followed by description of new telephone apparatus with completely noiseless reception. (See also - discussion p 318-9)
Neue Erkenntnisse ueber das Fernsprechen in geraeuschgestoerten Raeumen, etc
Neue Erkenntnisse ueber das Fernsprechen in geraeuschgestoerten Raeumen, etc
1936
7 pages
Article (Journal)
German
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