technique that uses sound propagation

SONAR
List of words for the clue technique that uses sound propagation from the crossword:
SLOMO SPREADING REPRODUCTION REDSHIFT PROCREATION MULTIPLICATION GENERATION EXTENSION ENGRAFTS DISSEMINATION BREEDING BIOGENY BIOGENESIS AIRING CPR ETUDE SHIATSU SLO ROTE
WordClue
HUMsound
BASSlow spectrum of sound tones
BEAKAnatomical uses
BELLsound-making device
WAVEsine or sound
AUDIOsound, or a sound signal
BLAREloud sound
CROAKharsh sound
MUSICart using sound
NOISEsound
PLONKThe sound of something solid landing
PLUMPThe sound of a sudden heavy fall
QUACKThe sound made by a duck
THUMPblow that produces a muffled sound
MIRRORobject that reflects light or sound
MUFFLEAnything that mutes or deadens sound
ETCHINGintaglio printmaking technique
FALLACYargument that uses faulty reasoning
RUBBINGreproduction technique
BRAINSTORMINGgroup creativity technique
DETAILtechnicality, trifle
DRUDGERYTedious, menial and exhausting work