Observed Frequency Calculator

Calculate Observed Frequency







Formula

The formula to calculate the observed frequency (f') is:

\[ f' = f \left(\frac{v + vo}{v - vs}\right) \]

Where:

Definitions

Example

Let's say the source frequency (f) is 500 Hz, the speed of sound (v) is 343 m/s, the observer speed (vo) is 10 m/s, and the source speed (vs) is 20 m/s. Using the formula:

\[ f' = 500 \left(\frac{343 + 10}{343 - 20}\right) \]

We get:

\[ f' \approx 546.44 \, \text{Hz} \]

So, the observed frequency is approximately 546.44 Hz.