Loudness, or volume, is the way that the human ear perceives sound. At its simplest, when the amplitude is increased, sound gets louder, and when it is decreased, sound gets quieter.Continue Reading
There are two things that contribute to our perception of sound. The first is the amplitude of the sound and the second is the frequency of the sound. Both of these things are precise measurements of sound rather than a perception.
This change in loudness brought on by an increase in amplitude is not proportionate. It all comes down to waveforms and how they vibrate. It is these vibrations that make sound. Amplitude affects the size of the vibration, while the frequency affects the speed of the vibration. This is what gives sound its pitch.
So, a sound with the same level of amplitude but a different frequency will have a different loudness to the human ear. For example, a bass sound will sound quieter than a mid-range sound even when both have the same amplitude. But if the amplitude of the bass sound is increased, its volume will increase and it will become louder.
Finally, the amount of increased volume that is achieved by an increase in amplitude is also affected by the frequency. So, turning the amplitude level in the mid-range sound from the previous example will not have the same proportional effect on loudness as the bass sound.Learn more about Optics & Waves
Pitch refers to the frequency of a sound, while loudness refers to the size or amplitude of the sound. Every sound has both a specific pitch and loudness.Full Answer >
Several characteristics define sound, including frequency, pitch, loudness, wavelength and period. Sound travels in waves and is caused by vibrations. Sound travels fastest through solids, slowest in gases and at an intermediate speed through liquids.Full Answer >
The difference between pitch and volume is that pitch is determined by the frequency that sound waves vibrate at while volume measures how loud or soft sound is. Combined with timbre, pitch, measured in hertz, and volume, measured in decibels, comprise the three components of sound.Full Answer >
The loudness of a sound, or volume of a sound wave, can be determined by the amplitude of the sound wave. Both pitch and volume can affect how "loud" a sound is and how it affects human ears specifically.Full Answer >