Using relationships involving frequency, wavelengths, velocity, distance and time

The speed (velocity) of sound can be used to calculate

wavelength if the frequency of the sound is known
frequency if the wavelength of the sound is known

v = fλ

Be careful of units.
The distance unit used to the calculated velocity should be the same as the wavelength unit.

For example: m for wavelength and m s^–1 for velocity.

The time unit in the frequency should be the same as the time unit in the velocity.

For example: s^–1 for frequency and m s^–1 for velocity.

The speed of sound can also be viewed as distance travelled per unit time.

v =	d
	t

Therefore the distance between the source of the sound and the listener can be calculated if the time delay is known.

The same cautions as above apply with respect to units.