How do we calculate sound? give an explanation with an example .
Answers
physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.
In human physiology and psychology, sound is the reception of such waves and their perception by the brain.[1] Humans can hear sound waves with frequencies between about 20 Hz and 20 kHz. Sound above 20 kHz is ultrasound and below 20 Hz is infrasound. Other animals have different hearing ranges.
◆Sound is measured in DECIBELS dB.
◆Equation of sound is ,
dB = 10 log (I /Io )
◆Where,
I - is the sound INTENSITY
Io - is the threshold INTENSITY.
◆Multiply the logarithm of the ratio of both with 10.We get , sound in decibels.
◆FREQUENCY of sound is also measured in Heartz , Hz. Sounds in ultrafrequency , that is above 20KHz are not audible to humans. Audible sound of humans are ranging it from 20Hz to 20KHz.