A sound source is detected at a level of 54 dB Intensity of 2.512e-07 Wim) when there is no background noise. How much will the sound level increase if there were 53.5 dB (Intensity of 2239e-07 Wim) background noise in addition to he sound source? Let la be the decibel level of the sound without noise, in a quiet place, and let Ln be the decibel level with sound and noise. di change with combined signal and noise. Enter at least siefies for a
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
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