Sound and Frequency

Some people think about what the term wave will be. Perhaps you imagine yourself waving to the sea to say Hi or waves. In physics, waves propagate through the medium and can be defined as repetitive and periodic interference that transfers energy from one point to another. This disturbance and change can move up and down, back and forth as long as the ocean waves are considered. The medium is a substance or substance that carries waves like waves, and the medium is water itself.

In its most basic definition, the sound is particle vibration. Each sound has three unique elements: amplitude, frequency, and time. The amplitude is the magnitude of the vibration, which is regarded as the magnitude of the sound. Frequency is the speed at which vibration occurs. The frequency of sound is what we think about pitch. Frequency is measured in hertz (Hz) and represents the repetition rate of sound waves every second. The human ear hears a sound of 20 Hz to 20,000 Hz. To give some point of view, the lowest sound of the traditional 88 key piano, A 0 has a frequency of 27.5 Hz. The pitch frequency of each octave increases logarithmically. That is, the frequency of each octave is twice the frequency of the octave below it. For example, the frequency of A 1 is 55 Hz, the frequency of A 2 is 110 Hz, and the frequency of A 3 is 220 Hz.

Like the light waves, the physical properties of sound waves are related to every aspect of our sound perception. The frequency of sound waves is related to our perception of sound pitch. High frequency sound waves are recognized as treble waves and low frequency sound waves are recognized as bass sounds. The frequency of the audible sound is in the range of 20 to 20,000 Hz and has the maximum sensitivity to frequencies falling in the middle of the range. As with the visible spectrum, the audible range of the other species is different. For example, hearing range of chickens is very limited, 125-2000 Hz. The audible range of the mouse is 1000 to 91000 Hz, and the audible range of Berga is 1000 to 123000 Hz. The audible range of our dogs and cats is between 70 - 45 000 Hz and 45 - 64 000 Hz (Strain, 2003).