Question

The frequency range of audible sound is ______

Answer 1

- Hint: A range signifies a collection or a set of similar things, in this case, we are taking frequency as a range, there will be a higher frequency and a lower frequency associated with the range.

Complete step-by-step solution -

The range of frequencies for audio signals ranges from infrasonic, audible to ultrasonic frequency range. A sound is a vibration that propagates as an acoustic wave in different kinds of media ranging from air, water or gas. It always needs a material medium for its propagation. Sounds are produced by a source which vibrates as a result producing waves in the material medium. The waves are transferred through the material medium. The particles of the material medium vibrate about their mean position in order to transfer the waves from the source to a particular point in the medium. We classify sounds on the basis of frequency. It is defined as the number of vibrations per unit time. The SI unit for frequency is Hertz (Hz). Usually, the frequency range for sound is split into three main parts,
First one is the infrasonic frequency which is all the frequencies below 20Hz, which is not audible for humans but some animals like elephant whales etc… can hear these frequencies.
Next is the audible frequency range which is audible for humans. The frequency ranges from 20Hz to 20000Hz.
The third one is the frequency range above 20KHz which goes till a few gigahertz known as the ultrasonic frequency range.
So the answer to the question is – 20 Hz to 20000Hz

Additional Information:
Acoustics is a branch of scientific study on mechanical waves in solids, fluids and gases. These waves include all the frequency range, from infrasonic to ultrasonic.
Acoustic Engineering is a branch of engineering which focuses on acoustics.
Sound pressure is defined as the difference of average local pressure and the pressure in the sound wave in the medium. It is usually represented in the unit of micro Pascal \[\left( \mu Pa \right)\].

Note: An audible sound is characterized by different factors like pitch, loudness, timbre, duration etc…
Pitch- It is defined as highness or lowness of sound which occur in a repeated fashion as the wave progresses through the medium. In the case of a simple sound, the pitch is related to the frequency of the slowest vibration.
Loudness- Loudness is the measure of how a sound is hard or soft in a particular interval of time. It is based on nerve stimulations that occur when we hear a sound.
Timbre- Timbre refers to the quality of sound that is being heard. Sounds produced by different objects have different timbres.