color

lights

computer

curve

equipment

studio

energy

electrical

technology

line

wave

instrument

motion

display

screen

sound

digital

electronics

communications

monitor

measure

pulse

test

tool

glow

audio

music

frequency

science

club

technical

soundtrack

spectrum

graph

signal

animation

techno

led

diagram

neon

amplitude

oscillation

oscillating

oscillograph

oscilloscope

sinusoid

oscillogram

green lines

spectrogram

low frequency