mechanisms

model

Intensity is the power (energy per unit time, in joules per second or watts) per area emanating from a source.

Therefore, it is defined as the sound Intensity ($I$), the ratio between the sound Power ($P$) and the section of Volume DV ($S$), so it is:

kyon

Si se toma la energ a E por oscilaci n se puede escribir la potencia en funci n de la energ a y el periodo T se tiene que

$W=\displaystyle\frac{E}{T}$

Si por otro lado con list=3398 la variaci n del volumen es

y con list=3193 la intensidad sonora es

$I=\displaystyle\frac{W}{S}=\displaystyle\frac{E}{ST}=\displaystyle\frac{cE}{ScT}=\displaystyle\frac{cE}{V}$

osea con list es

The the energy density ($e$) is obtained from the mean density ($\rho$) and the molecule speed ($u$) as follows:

kyon

Como la densidad de la energ a cin tica es con list=3400

se tiene que con list=3406

que la intensidad es con list

The sound Intensity ($I$) can be calculated from the mean density ($\rho$), the sound pressure ($p_s$) The molar concentration ($c$) with

kyon

Just like in other human sensory systems, our hearing is capable of detecting pressure variations over a wide range $(10^{-5}-10^2 Pa)$. However, when we perceive a signal doubling, it doesn't correspond to double the pressure or sound intensity, but rather the square of these magnitudes. In other words, our signal detection capacity operates on a logarithmic and nonlinear scale.

Hence, the noise level ($L$) is indicated not in the sound Intensity ($I$) or the reference intensity ($I_{ref}$), but in the base ten logarithm of these magnitudes. Particularly, we take the lowest sound intensity we can perceive, the reference intensity ($I_{ref}$)

, and use it as a reference. The new scale is defined with list as follows:

The sound pressure level that we can detect with our ear, denoted as the reference pressure, water ($p_{ref}$), is $2 \times 10^{-5} , Pa$.

Since the sound Intensity ($I$) is associated with the sound pressure ($p_s$), the mean density ($\rho$), and the speed of sound ($c$), and is equal to

equation=3405

we can calculate a value for the reference intensity ($I_{ref}$) based on the value of the reference pressure, water ($p_{ref}$):

kyon

This is achieved with a density of $1.27 , kg/m^3$ and a sound speed of $331 , m/s$, equivalent to $9.5 \times 10^{-13} , W/m^2$.