sound propagation distance

propagation of sound

sound ranging (artillery sound ranging)

shock wave propagation

wave electromagnetic propagation logging

speed of wave propagation

electromagnetic wave propagation

noise propagation

propagation of pressure

propagation

electric properties of object and propagation medium for electromagnetic waves

radio propagation data

radio propagation prediction

clicking sound

communications by sound

high-intensity sound

sonar (sound navigation and ranging)

sound communication

sound wave

sound-absorbent tile

stun grenade / flash grenade / flashbang / thunderflash / sound bomb

artillery sound reconnaissance

supersonic speed (exceeds speed of sound / Mach 1)

sound damping

aerial sound ranging

air registration point (in sound ranging)

high-frequency sound waves

sound-proof compartment

background sound pressure level

overall sound pressure level

adjusted slope of sound pressure level

atmospheric sound absorption

change in slope of sound pressure level