Pure Tone Average Calculator

Calculate Pure Tone Average







Formula

The formula to calculate the Pure Tone Average (PTA) is:

\[ \text{PTA} = \frac{\sum \text{TL}}{4} \]

Where:

Pure Tone Average Definition

A pure tone average is a measure of the average hearing sensitivity a person has at various frequencies. These frequencies are typically measured at 3, 4, or 6 different frequency levels.

Example Calculation

Let's consider an example:

Using the formula to calculate the Pure Tone Average:

\[ \text{PTA} = \frac{20 + 25 + 30 + 35}{4} = 27.5 \, \text{dB} \]

This demonstrates that with the given threshold levels, the pure tone average would be 27.5 dB.