subsonic

noun 0.614

sound wave

noun 0.595

sub-bass

noun 0.577

inaudibility

noun 0.555

sound

noun 0.555

ultrasonics

noun 0.554

sound energy

noun 0.550

infrared

noun 0.549

ultrasound

noun 0.547

sound art

noun 0.539

subharmonic

noun 0.534

subwoofer

noun 0.530

hydrophone

noun 0.525

second sound

noun 0.521

acoustic

noun 0.521

speed of sound

noun 0.519

infra

noun 0.518

infrared radiation

noun 0.511

sonar

noun 0.511

insonation

noun 0.510

acoustic energy

noun 0.505

seismic wave

noun 0.503

susurration

noun 0.502

found sound

noun 0.501