kuulmiskõvera

Kuulmiskõver, also known as the audiogram, is a graphical representation of a person's hearing ability. It plots the softest sound a person can hear at different frequencies. The horizontal axis represents frequency, measured in Hertz (Hz), which corresponds to the pitch of the sound. Lower frequencies on the left represent lower pitches, like a bass drum, while higher frequencies on the right represent higher pitches, like a bird's chirp. The vertical axis represents intensity, measured in decibels (dB), which corresponds to the loudness of the sound. Lower on the vertical axis indicates softer sounds, while higher indicates louder sounds.

A typical hearing threshold for young, healthy adults is around 0-25 dB across most frequencies. When an audiogram shows a deviation from this range, it indicates a hearing loss. The shape and degree of the curve can help audiologists diagnose the type and severity of hearing loss. For instance, a sloping curve where hearing is better at lower frequencies and worse at higher frequencies is common with age-related hearing loss (presbycusis). A flat curve suggests a more uniform loss across all frequencies. The audiogram is a crucial tool for identifying hearing impairments, determining the need for hearing aids, and monitoring changes in hearing over time. It is typically conducted in a soundproof booth using specialized equipment.