Ключевые слова: aid, audible, audio, auditory, background, banner, biometrics, command, deaf, deafness, detection, device, ear, form, heading, hear, hearing, icon, landing page, level, line, listen, listening, mic, microphone, outline, perception, problem, recognition, recognizing, record, recording, sense, sensory, set, sign, silence, sound, soundwave, speech, voice, voiceover, wave, waveform, web, web header,