Decibels: dB Sound Level Meter
工具
仅适用于 iPhone
免费 · App 内购买 · 专为 iPhone 设计。未针对 macOS 验证。
Want to know what noise level is around you? in the restaurant? in the train? in the office? This app will show you with precision & style.
Features:
- Smooth analog display of dB(A)
- Take photo with sound level display
- Share, print, and store sound level photos
Extra Features (with purchase):
- Select frequency weightings A, C, and Z
- Record decibels on beautiful strip charts
- Annotate the strip charts
- Share, print, and store the strip charts
This app uses the internal microphone to estimate the sound pressure level in decibels (dB SPL).
Examples:
- quiet bedroom at night: 30 dB
- average home: 50 dB
- vacuum cleaner, 1m away: 70 dB
- jet aircraft, 50 m away: 140 dB
更多 Thank you for using Decibels. This version fixes a bug that in some cases prevented the microphone from being activated when the app was reopened.
3.5.2 2023/11/17
A few invisible improvements to make sure the app starts properly in any situation.
3.5.1 2023/11/13
Enjoy a refreshed design that extends to every edge of your iPhone's screen.
3.5 2023/10/26
The strip chart recorder, which elegantly records sound level on paper strips, has been improved to run even more efficiently on your device, and a bug is fixed that in some cases caused the app to crash when closing.
3.4.2 2023/10/17
This version makes the app run more efficiently and it resolves issues that a few people had when storing or deleting recorded paper strips on the device.
3.4.1 2023/10/15
This version makes the app run more efficiently and it resolves issues that a few people had when storing recorded paper strips on the device.
3.4 2023/10/14
It's now easy to share or delete multiple strip charts at once. Just hit the "Select" button or swipe with two fingers across the charts you want to select, then choose an action from the toolbar. Sharing fotos and strip charts is now also possible via the Messages app, and several bugs are fixed to improve overall stability.
3.3 2023/09/26
Some small improvements to make the app even more enjoyable.
3.2.1 2023/09/19
The calibrated built-in microphone is now always used to achieve the best possible precision.
3.2 2023/09/14
In the event of an error, the report that can be sent to the developer contains better details to help resolve the issue.
3.1.3 2023/08/23
The support link is updated and a few minor things have been fixed.
3.1.2 2023/08/21
Interruptions by other apps, phone calls, Siri and the like are now handled better.
3.1.1 2023/08/13
The accuracy of frequency weighting is further improved and situations where the microphone is blocked by other apps are handled more smoothly.
3.1 2023/08/11
This version improves the experience in situations where the microphone is not available for the app.
3.0.5 2023/08/11
This update squashes a few bugs and improves the experience in situations where the microphone is blocked by a call or other audio apps.
3.0.4 2021/12/14
A few more bugs have been removed in version 3.0.3.
Version 3.0 of Decibels brings a largely improved accuracy and professional frequency weighting as known from certified sound level meters.
If you like the app I'm happy when you leave a positive review :-).
3.0.3 2021/09/13
An issue related to recorded strip charts is fixed.
Version 3.0 of Decibels brings a largely improved accuracy and professional frequency weighting as known from certified sound level meters.
If you like the app I'm happy when you leave a positive review :-).
3.0.2 2021/08/26
This update gets rid of display errors related to dark mode and of a few errors under the hood.
Version 3.0 of Decibels brings a largely improved accuracy and professional frequency weighting as known from certified sound level meters.
If you like the app I'm happy when you leave a positive review :-).
3.0.1 2021/08/24
Version 3.0 of Decibels brings a largely improved accuracy and professional frequency weighting as known from certified sound level meters.
If you like the app I'm happy if you leave a positive review.
3.0 2021/08/18
This version fixes a bug that prevented some paper strips with annotations to be deleted permanently. It also improves the experience when adding annotations.
2.1.5 2021/06/10
A few crashes are fixed in this version and a glitch is removed when launching the app.
It also includes all the improvements introduced in version 2.1.3:
This version fixes several issues with requesting permission to access the microphone, back camera, and storing images to the photos library. Also, the in-app store is updated to properly display the preview video again.
Strip charts are now even easier to delete by swiping them left or right and two new buttons make switching between gauge display and strip chart recorder more clear. You may still just swipe between those two views.
And maybe you notice, the camera now opens very smoothly and quick.
Thank you for using Decibels. I'm always happy about positive reviews and comments.
Feel free to contact me at iphone@bannach.ch in case something is unclear.
2.1.4 2021/06/02
This version fixes several issues with requesting permission to access the microphone, back camera, and storing images to the photos library. Also, the in-app store is updated to properly display the preview video again.
Strip charts are now even easier to delete by swiping them left or right and two new buttons make switching between gauge display and strip chart recorder more clear. You may still just swipe between those two views.
And maybe you notice, the camera now opens very smoothly and quick.
Thank you for using Decibels. I'm always happy about positive reviews and comments.
Feel free to contact me at iphone@bannach.ch in case something is unclear.
2.1.3 2021/05/20
This update addresses an issue with the App Store that prevented the app from launching for some users after a purchase.
2.1.2 2019/07/22
- Supporting upside-down orientation with the microphone pointing upwards.
- Addressing an issue that let the app crash when saving an image.
2.1.1 2017/09/22
- Optimized for newer iOS devices.
- Displays a warning if microphone access is disabled.
2.1 2017/06/12
Thank you for using Decibels. This version fixes a bug that in some cases prevented the microphone from being activated when the app was reopened.
更多 版本 3.5.2 2023/11/17
未收集数据 开发者不会从此 App 中收集任何数据。
