Simulation Mode
Adjust Values
Frequency Simulation
Frequency
f = 1 / T
f = frequency (Hz) · T = time period (s)
The total number of waves produced per second is called
frequency. It is denoted by f and
measured in Hertz (Hz). Bigger units include kHz,
MHz and GHz.
Higher frequency → more waves per second → higher pitched sound.
Higher frequency → more waves per second → higher pitched sound.
Frequency f2.0 Hz
Period T = 1/f0.500 s
Amplitude
A = max displacement
A = amplitude (m) · from mean position
The maximum displacement of particles of the medium
above or below the mean position in a wave is
called amplitude.
It is denoted by A and its S.I. unit is metre (m).
Larger amplitude → louder sound.
It is denoted by A and its S.I. unit is metre (m).
Larger amplitude → louder sound.
Amplitude A30 m
LoudnessNormal 🔊
Wavelength
λ = v / f
λ = wavelength (m) · v = speed · f =
frequency
The distance travelled by a sound wave in
one complete vibration is called wavelength. It is
also the distance between two consecutive crests or
troughs.
It is denoted by the Greek letter Lambda (λ). S.I. unit: metre (m).
It is denoted by the Greek letter Lambda (λ). S.I. unit: metre (m).
Wavelength λ80 m
Speed of Sound
v = f × λ
v = speed (m/s) · f = frequency · λ =
wavelength
Speed of sound is constant in a given medium. In
air it is approximately 332 m/s.
If frequency increases, wavelength decreases and vice‑versa (since speed stays the same in the same medium).
If frequency increases, wavelength decreases and vice‑versa (since speed stays the same in the same medium).
160 m/s
Below speed of sound in air
📘 Example
f = 66 Hz, λ = 5 mv = 66 × 5 = 330 m/s