How to estimate SPL from a microphone output ?
14 October 2025
When developing audio devices involving microphones, knowing the actual Sound Pressure Level (SPL) hitting your sensor is crucial. It…
When developing audio devices involving microphones, knowing the actual Sound Pressure Level (SPL) hitting your sensor is crucial. It…
Dampers are acoustic cloth screens for insertion inside acoustic tubing. These damping elements are used between the receiver outlet and the ear canal to smoothen the frequency response. Various acoustical resistances and sizes are available.
| Image | Name | Description | Diameter / length [mm] | Thickness [mm] | Resistance [Ohm] | Color | Product status |
|---|---|---|---|---|---|---|---|
 | BF-32212-000 | Damping screen | 1.78 | 1.65 | 1200 | White | Active |
| BF-3292-000 | Damping screen | 1.37 | 1.57 | 1000 | Brown | Active |
|
| BF-3320-000 | Damping screen | 1.12 | 1.41 | 1000 | Brown | Active |
| BF-7083-000 | Damping screen | 1.37 | 1.57 | 680 | White | Active |
 | BF-9778-000 | Damping screen | 1.37 | 1.57 | 2200 | Red | Active |
| BF-3039-A10 | Damping screen | 1.37 | 1.57 | 1500 | Green | Active |
| BF-1778-000 | Damper extraction tool | 7.92 | 2.6 | N/A | N/A | Active |
| BF-1859-000 | Damping plug | 2.08 | 2.44 | 680 | White | Active |
| BF-1860-000 | Damping plug | 2.08 | 2.44 | 1000 | Brown | Active |
 | BF-1861-000 | Damping plug | 2.08 | 2.44 | 1500 | Green | Active |
| BF-1921-000 | Damping plug | 2.08 | 2.44 | 2200 | Red | Active |
| BF-1922-000 | Damping plug | 2.08 | 2.44 | 3300 | Orange | Active |
| BF-1923-000 | Damping plug | 2.08 | 2.44 | 4700 | Yellow | Active |
| BF-1988-000 | Damping screen | 1.12 | 1.41 | 680 | White | Active |
|
| BF-1991-000 | Damping screen | 1.12 | 1.41 | 1500 | Green | Active |
| BF-1995-000 | Damping screen | 1.12 | 1.41 | 2200 | Red | Active |
| BF-1997-000 | Damping screen | 1.78 | 1.65 | 680 | White | Active |
 | BF-1999-000 | Damping plug | 2.08 | 2.44 | 330 | Grey | Active |
 | BF-3034-000 | Damping screen | 1.78 | 1.65 | 330 | Grey | Active |
|
| BF-3035-000 | Damping screen | 1.78 | 1.65 | 1000 | Brown | Active |
 | BF-3036-000 | Damping screen | 1.78 | 1.65 | 3300 | Orange | Active |
 | BF-3037-000 | Damping screen | 1.78 | 1.65 | 2200 | Red | Active |
| BF-3038-000 | Damping screen | 1.78 | 1.65 | 1500 | Green | Active |
 | BF-3039-000 | Damping screen | 1.37 | 1.57 | 1500 | Green | Active |
 | BF-3163-000 | Damping screen | 1.12 | 1.41 | 4700 | Yellow | Active |
Dampers are acoustic cloth screens for insertion inside acoustic tubing. These damping elements are used between the receiver outlet and the ear canal to smoothen the frequency response. Various acoustical resistances and sizes are available.
| Image | Name | Description | Diameter / length [mm] | Thickness [mm] | Resistance [Ohm] | Color | Product status |
|---|---|---|---|---|---|---|---|
| BF-32212-000 | Damping screen | 1.78 | 1.65 | 1200 | White | Active |
|
| BF-3292-000 | Damping screen | 1.37 | 1.57 | 1000 | Brown | Active |
|
| BF-3320-000 | Damping screen | 1.12 | 1.41 | 1000 | Brown | Active |
| BF-7083-000 | Damping screen | 1.37 | 1.57 | 680 | White | Active |
| BF-9778-000 | Damping screen | 1.37 | 1.57 | 2200 | Red | Active |
|
| BF-3039-A10 | Damping screen | 1.37 | 1.57 | 1500 | Green | Active |
|
| BF-1778-000 | Damper extraction tool | 7.92 | 2.6 | N/A | N/A | Active |
|
| BF-1859-000 | Damping plug | 2.08 | 2.44 | 680 | White | Active |
|
| BF-1860-000 | Damping plug | 2.08 | 2.44 | 1000 | Brown | Active |
| BF-1861-000 | Damping plug | 2.08 | 2.44 | 1500 | Green | Active |
|
| BF-1921-000 | Damping plug | 2.08 | 2.44 | 2200 | Red | Active |
|
| BF-1922-000 | Damping plug | 2.08 | 2.44 | 3300 | Orange | Active |
|
| BF-1923-000 | Damping plug | 2.08 | 2.44 | 4700 | Yellow | Active |
| BF-1988-000 | Damping screen | 1.12 | 1.41 | 680 | White | Active |
|
| BF-1991-000 | Damping screen | 1.12 | 1.41 | 1500 | Green | Active |
| BF-1995-000 | Damping screen | 1.12 | 1.41 | 2200 | Red | Active |
| BF-1997-000 | Damping screen | 1.78 | 1.65 | 680 | White | Active |
| BF-1999-000 | Damping plug | 2.08 | 2.44 | 330 | Grey | Active |
| BF-3034-000 | Damping screen | 1.78 | 1.65 | 330 | Grey | Active |
|
| BF-3035-000 | Damping screen | 1.78 | 1.65 | 1000 | Brown | Active |
| BF-3036-000 | Damping screen | 1.78 | 1.65 | 3300 | Orange | Active |
| BF-3037-000 | Damping screen | 1.78 | 1.65 | 2200 | Red | Active |
|
| BF-3038-000 | Damping screen | 1.78 | 1.65 | 1500 | Green | Active |
| BF-3039-000 | Damping screen | 1.37 | 1.57 | 1500 | Green | Active |
| BF-3163-000 | Damping screen | 1.12 | 1.41 | 4700 | Yellow | Active |
When developing audio devices involving microphones, knowing the actual Sound Pressure Level (SPL) hitting your sensor is crucial. It…
When developing audio devices involving microphones, knowing the actual Sound Pressure Level (SPL) hitting your sensor is crucial. It…
Dampers are acoustic cloth screens for insertion inside acoustic tubing. These damping elements are used between the receiver outlet and the ear canal to smoothen the frequency response. Various acoustical resistances and sizes are available.
| Image | Name | Description | Diameter / length [mm] | Thickness [mm] | Resistance [Ohm] | Color | Product status |
|---|---|---|---|---|---|---|---|
| BF-32212-000 | Damping screen | 1.78 | 1.65 | 1200 | White | Active |
|
| BF-3292-000 | Damping screen | 1.37 | 1.57 | 1000 | Brown | Active |
|
| BF-3320-000 | Damping screen | 1.12 | 1.41 | 1000 | Brown | Active |
| BF-7083-000 | Damping screen | 1.37 | 1.57 | 680 | White | Active |
| BF-9778-000 | Damping screen | 1.37 | 1.57 | 2200 | Red | Active |
|
| BF-3039-A10 | Damping screen | 1.37 | 1.57 | 1500 | Green | Active |
|
| BF-1778-000 | Damper extraction tool | 7.92 | 2.6 | N/A | N/A | Active |
|
| BF-1859-000 | Damping plug | 2.08 | 2.44 | 680 | White | Active |
|
| BF-1860-000 | Damping plug | 2.08 | 2.44 | 1000 | Brown | Active |
| BF-1861-000 | Damping plug | 2.08 | 2.44 | 1500 | Green | Active |
|
| BF-1921-000 | Damping plug | 2.08 | 2.44 | 2200 | Red | Active |
|
| BF-1922-000 | Damping plug | 2.08 | 2.44 | 3300 | Orange | Active |
|
| BF-1923-000 | Damping plug | 2.08 | 2.44 | 4700 | Yellow | Active |
| BF-1988-000 | Damping screen | 1.12 | 1.41 | 680 | White | Active |
|
| BF-1991-000 | Damping screen | 1.12 | 1.41 | 1500 | Green | Active |
| BF-1995-000 | Damping screen | 1.12 | 1.41 | 2200 | Red | Active |
| BF-1997-000 | Damping screen | 1.78 | 1.65 | 680 | White | Active |
| BF-1999-000 | Damping plug | 2.08 | 2.44 | 330 | Grey | Active |
| BF-3034-000 | Damping screen | 1.78 | 1.65 | 330 | Grey | Active |
|
| BF-3035-000 | Damping screen | 1.78 | 1.65 | 1000 | Brown | Active |
| BF-3036-000 | Damping screen | 1.78 | 1.65 | 3300 | Orange | Active |
| BF-3037-000 | Damping screen | 1.78 | 1.65 | 2200 | Red | Active |
|
| BF-3038-000 | Damping screen | 1.78 | 1.65 | 1500 | Green | Active |
| BF-3039-000 | Damping screen | 1.37 | 1.57 | 1500 | Green | Active |
| BF-3163-000 | Damping screen | 1.12 | 1.41 | 4700 | Yellow | Active |