PERFORMANCE STANDARDS.
Octave Band Center Frequency in Cycles Per Second | Sound Pressure Level Decibels re0.0002 dyne/cm2 |
|---|---|
63 | 58 |
125 | 49 |
250 | 42 |
500 | 37 |
1,000 | 33 |
2,000 | 25 |
4,000 | 25 |
8,000 | 24 |
For objectionable noises due to intermittence, beat frequency or hammering, or if the noise is not smooth and continuous, corrections shall be made to the above table by subtracting five decibels from each of the decibel levels given. |
PERFORMANCE STANDARDS.
Octave Band Center Frequency in Cycles Per Second | Sound Pressure Level Decibels re0.0002 dyne/cm2 |
|---|---|
63 | 58 |
125 | 49 |
250 | 42 |
500 | 37 |
1,000 | 33 |
2,000 | 25 |
4,000 | 25 |
8,000 | 24 |
For objectionable noises due to intermittence, beat frequency or hammering, or if the noise is not smooth and continuous, corrections shall be made to the above table by subtracting five decibels from each of the decibel levels given. |