An audiogram is actually a graph of hearing thresholds at several frequencies in Each individual ear. Thresholds that are 25 dB HL (hearing level) or much better (lessen) are thought of regular for Older people. Noise publicity originally affects hearing most at frequencies all around 3000-6000 Hz, developing a "notch" https://corporatemeetingroomdevic55433.theblogfairy.com/36422428/everything-about-enterprise-video-conferencing-tools