Ключевые слова: abstract, abstraction, amplifier, audio, backdrop, background, banner, bar, bars, beat, bottom, business, club, colorful, communication, design, digital, disco, display, electronic, equalizer, equipment, falling, frequency, graph, graphic, meter, mixer, monitor, moving, music, musical, party, peak, player, radio, rave, retro, rising, screen, sound, spectrum, stereo, studio, technology, voice, volume, vu, wave, waveform,