Ключевые слова: abstract, aloud, audio, background, black, design, diagram, digital, display, electronic, element, energy, equalizer, flat, flow, frequency, graph, graphic, illustration, line, loud, microphone, mixer, modern, motion, music, musical, noisy, pulse, quiet, radio, record, science, signal, song, sound, soundtrack, speaking, studio, tech, technology, track, voice, volume, wave, waveform,