Question

what are the limitations of sabines formula..?​

Answer 1

Answer:

The Sabine formula is really only valid for rooms of relatively low absorption α less than about 0.3 because it becomes increasingly inaccurate as the absorption increases

Answer 2

Answer:

Limitations of sabines formula:

Eyring's limitation of Sabin's formula (1930) indicates that Sabin's theory assumes a continuous loss of energy in the room, i.e. the loss of energy through the walls is assumed to occur simultaneously with the loss of energy from the volume of the room. Eyring's law assumes that energy is lost at each discrete reflection of a sound ray.

Extra information:

Sabins's formula:$a = \sum \: s \alpha$

Where:$\sum =$ Sabin (total room absorption at given frequency)

S = surface area of material (square feet) $\alpha =$

Sound Absorption Coefficient or NRC at a given frequency

After we calculate a, we can use Sabine's formula to calculate the reverberation time.

Sabin source:

$RT60 = 0.049 \frac{v}{a}$

Where: RT60 = reverberation time

V = volume of space (cubic feet)

a = sabins (total room absorption at given frequency)

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