big to small cocentric radial spiral circles gradation

big small cocentric radial spiral circles gradation vector halftone circle shapes sound waves circle line round radial wave concentric pattern vector graphic sound abstract background effect ring spiral circular icon radio swirl target center geometric white black design ripple signal audio radar symbol dynamic music vortex element hypnosis shape texture centric contour illusion monitor noise speaker stripe blend energy isolated light modern technology vibration concept red sonar sonic loud monochrome optical point rotation vision art blue hypnotic curve disaster earthquake geometry gradient