We can define the speed of sound as the speed at which sound waves propagate through different materials.

Speed of sound varies in every medium;for instance, the speed of sound through air is different from the speed of sound through a brick wall.

**Formula to calculate the speed of sound.**

**Example:**

Calculate the speed of a sound wave whose 17.15 meters and has a frequency of 20 Hertz.

Therefore, the speed of sound is 343 m/s.

Below is a chart of speed of sound in different materials.

Material | Speed of Sound |

Rubber | 66 m/s |

Air at 40 °C | 355 m/s |

Air at 20 °C | 343 m/s |

Lead | 1210 m/s |

Gold | 3240 m/s |

Glass | 4540 m/s |

Copper | 4600 m/s |

Aluminium | 6320 m/s |

Therefore, from the chart we can see that the speed of the sound we were calculating is through air at 20 °C .