 |
| English | Russian |
| sound broadcasting station | звуковещательная станция (A month later, Beal added that "the most important issue at this time with respect to the Armstrong system is the question of the extent to which the service area of a sound broadcasting station may be extended by its use." – by Gary L. Frost Tamerlane) |
| sound signaling | акустическая связь (by whistle, etc.) |
| unvoiced sound | глухой звук |