Vibrations! 2.6
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Paid Version
Publisher Description
Vibrations! - Vibrations is an app for measuring mechanical vibration and acoustic noise
Vibrations is an app for measuring mechanical vibrations and acoustic noise from engines, the environment, machines, and other equipment.
This is (currently) the only app that combines acoustic *and* mechanical measurements!
Uses: monitoring vehicle engine vibration, monitoring vibrations of household appliances (dishwasher, refrigerator, waste disposal units, clothes dryers, etc.), measuring g-force in moving vehicles, helping to identify failing gears, evidenced by knocking sounds, modes, etc..
Vibrations uses data streams from the built-in accelerometer and microphone: it calculates two simultaneous FFTs, one from the mechanical measurements, one from the audible measurements. It then shows the frequency spectra on the screen. The frequency axis is labelled in Hz and RPM (revolutions per minute).
Four on-screen software gauges give an overview of the measurements:
1) The g-force (excluding gravity), which measures acceleration
2) The frequency of the current peak in the mechanical/vibration noise
3) The frequency of the current peak in the acoustic noise
4) The sample rate at which mechanical vibrations are being measured
Screen shots can be taken using the "Save Screen" button, and stored to the SD card.
Time series of accelerometer data (up to 20 seconds) can be recorded and saved using the "Record Data" button. Since data are continually being gathered, the recorded data written to the file actually starts a second or so *before* the button was pressed. Recording can be interrupted while in progress, and the data discarded or saved. Otherwise, the recording will automatically terminate after 20 seconds have elapsed, and the data discarded or saved then.
Data collection can be paused and resumed using the "Pause"/"Resume" button.
This is the first release of this app, and ideas for improvements/enhancements are welcome: please contact me.
Also, please note that the frequency limit of the mechanical vibration measurement is limited by the maximum rate that accelerometer samples can be obtained from the Android device: this typically varies from device to device - e.g. on the Nexus 7 and 10 tablets, the rate is ~200 samples/sec, giving a maximum frequency measurement of ~100Hz or 6000 RPM. On the Galaxy S3 the rate is ~100 samples/sec, giving a maximum frequency of ~50Hz.
About Vibrations!
Vibrations! is a paid app for Android published in the Geography list of apps, part of Education.
The company that develops Vibrations! is jjbunn. The latest version released by its developer is 2.6.
To install Vibrations! on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2017-08-27 and was downloaded 3 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Vibrations! as malware as malware if the download link to com.julian.apps.Vibrations is broken.
How to install Vibrations! on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Vibrations! is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Vibrations! will be shown. Click on Accept to continue the process.
- Vibrations! will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
