This sound represent a sonar of submarine approaching an enemy, it can be used in a war movie or even in a video game by the very synthetic sound of this track. For this, i created a sound frequency 440, amplitude 0.8 then, i used an increase of the envelope of this sound in several places to create a sharp sound corresponding to the detection of the enemy. I also added a reverberation because we are in a submarine and to finish, i accelerated the speed to announce that he is near and i duplicate this part many times.
MONTECOT_MĂŠlissa_2015_2016_sonar.wav
聲道：1
類型：wav
bip、signal、sonar、radar、war、marins、enemy、submarines、underwater
嘟、信號、聲納、雷達、戰爭、水手、敵人、潛艇、水下
資料來源：freesound ( https://freesound.org )