Sound Insulating Values in the High-frequency Band of an Anechoic Box (10K~20KHz)
08/29/2024
Sonora Technology guarantees sound insulation value of our anechoic box. You may find the guaranteed sound insulating value and examples of actual measurement sound insulating value on our product page.
| Sound insulating value (transmission loss) ／dB | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Hz | 31.5 | 63 | 125 | 250 | 500 | 1K | 2K | 4K | 8K |
| Sound insulating value | (24) | (34) | 39 | 43 | 51 | 55 | 63 | 64 | 62 |
| Guaranteed value | |||||||||
| Actual measurement value | 29.1 | 46.2 | 44.9 | 44.7 | 61.8 | 64.1 | 71.7 | 75.6 | 80.1 |
| Manufactured by one certain company | — | 17 | 20 | 27 | 35 | 40 | 45 | — | — |
This frequency band is a 1/1-octave band and only lists sound insulating values up to 8 KHz.
We have also examined the sound insulating value in the high frequency band above 8 KHz.
| Hz | 10KHz | 12.5KHz | 16KHz | 20KHz |
|---|---|---|---|---|
| Actual measurement sound insulating value ／dB | 70.2 | 70.5 | 68.8 | 65.6 |
As shown in the table above, the sound insulating value is high even in the frequency range from 8 KHz to less than ultrasonic.
Although the anechoic box is a small measurement box, it provides high sound insulating value from low to high frequencies.