An audiogram is actually a graph of hearing thresholds at different frequencies in Each individual ear. Thresholds that happen to be 25 dB HL (hearing stage) or far better (decrease) are regarded standard for Older people. Noise publicity at first influences Listening to most at frequencies close to 3000-6000 Hz, https://camera-system-for-hybrid22110.bloggerbags.com/42837975/the-best-side-of-noise-cancelling-conference-system