Ключевые слова: abstract, amplifier, audio, bar, control, design, dial, digital, element, equalizer, equipment, finger, frequency, graphic, hand, hearing, knob, level, loud, max, maximum, metal, metallic, meter, min, mixer, modern, music, noisy, panel, pattern, player, radio, recording, reflection, scale, settings, sound, spectrum, steel, stereo, studio, style, switch, symbol, technology, thermostat, turn, voice, volume,