About Vibration
Vibration is a true vibration spectrum analyzer using the built in accelerometers and gyroscope inside the iPod Touch and the iPhone and starting with version 3.x it can sample the built in microphone and the Digiducer...
Vibration is a true vibration spectrum analyzer using the built in accelerometers and gyroscope inside the iPod Touch and the iPhone and starting with version 3.x it can sample the built in microphone and the Digiducer professional quality external USB accelerometer. It acquires and displays time series data, optionally removes DC bias, applies a Hamming window and performs an FFT on each channel to produce frequency spectra. The 3-channel accelerometer has a sensitivity of approximately 0.02g and a range of ±2g making the iPhone and iPod Touch sensitive enough to analyze the vibration of most moving machinery.
In many applications Vibration can be an excellent portable alternative to a commercial spectrum analyzer. In predictive maintenance applications Vibration can help identify bearing defects, shaft misalignment, imbalance, and structural resonant frequencies. Vibration is also useful for monitoring the acceleration of part and material handling equipment.
The software is flexible and easy to use. It was written to emulate the familiar oscilloscope based spectrum analyzer. Sample rate and sample delay are easily adjustable and the user can select the length of the data acquisition and the vertical scale used for the display. Once the settings are configured simply press the sample button on the device or on your Apple Watch. When a test is complete the resulting data can be emailed to your desktop computer for documentation purposes.
Features:
• Sample the built in accelerometer or gyroscope, the internal Microphone or the professional Digiducer USB products including the 333D01, 333D04, 633A01 and 435B39. Additional Digiducer accelerometer features can be enabled via in-app purchase.
• Adjustable sample rate from 10Hz to 100Hz for the internal sensors and 1 kHz to 48 kHz for the internal microphone and the Digiducer accelerometer (with in-app purchase)
• Trigger sampling and review settings using the Apple Watch companion app.
• Auto repeat and auto save allow data to be taken over extremely long periods of time.
• Selectable data length from 256 to 4096 samples
• Variable start delay from 0 to 20 seconds
• Adjustable vertical scale for time series data
• DC Remove option to get rid of the gravity vector
• Switchable Hamming window for frequency analysis
• Frequency data plotted as Linear-Linear, Log-Log, Log-Linear and Linear-Log
• Computes rms and peak levels for each channel and for all three channels combined
• Document your results by taking screen snapshots and syncing them to your computer or sending a CSV formatted email with the time and frequency data to your computer or saving data locally and downloading the data with iTunes
• Turn on and off individual frequency plots
• Calibrate the internal accelerometers and examine and edit the calibration data
• Optional sounds to mark the start and stop of data acquisition
• Data inspectors and zoom
• Triggering off one or more accelerometer channels or microphone input.
• Frequency data averaging and peak hold.
Further development and additional features are planned. Please use the email links in the program to request new features and report any problems.
Nov 29, 2023
Version 4.11
• Improved the anti-aliasing filter for Fmax values less than 4 kHz for microphone and external sensor inputs.
• Added ability to turn On/Off time series display channels
Previous Versions
Here you can find the changelog of Vibration since it was posted on our website on 2016-09-25 18:17:48.
The latest version is 4.11 and it was updated on 2024-04-19 19:19:07. See below the changes in each version.
Vibration version 4.11
Updated At: 2023-11-29
Changes: Nov 29, 2023
Version 4.11
• Improved the anti-aliasing filter for Fmax values less than 4 kHz for microphone and external sensor inputs.
• Added ability to turn On/Off time series display channels
Vibration version 4.10
Updated At: 2023-03-15
Changes: Mar 15, 2023
Version 4.10
Bug Fixes
Vibration version 4.04
Updated At: 2022-01-27
Changes: Jan 27, 2022 Version 4.04
• Updated the peak display to only show the data from the traces which are active on the frequency display
• Added Hanning and Flattop windows for frequency processing
• Added support for the new 333D04 USB accelerometer from Digiducer
Vibration version 4.01
Updated At: 2021-12-05
Changes: Dec 5, 2021 Version 4.01
• Updated Libraries for iOS 15
• Bug Fixes
Vibration version 4.00
Updated At: 2021-08-05
Changes: Aug 5, 2021 Version 4.00
• Fixed bug which caused the app to crash when saving data using the save icon
Vibration version 3.99
Updated At: 2021-07-29
Changes: Jul 29, 2021 Version 3.99
• Added Mils/Degrees as a selectable unit for frequency plots. This was requested by the HVAC industry in the US.
Vibration version 3.98
Updated At: 2021-07-09
Changes: Jul 9, 2021 Version 3.98
• Added option for horizontal zoom only for frequency view
• Fixed bug in frequency view where switching away from this view while in zoom mode would prevent returning to original zoom.
• Added magnetic peaks in the frequency view for the HUD cursor.
• Fixed bug where Peak list on iPad would move off screen in Log-log frequency mode.
Vibration version 3.96
Updated At: 2021-03-15
Changes: Mar 15, 2021 Version 3.96
• Fixed zoom on iPhone 12 Pro
• Added Fmax to bottom of frequency screen.
• Replace words with icons in Time Series toolbar
• Updated the users manual
• Added the file names to the top of the screen when a file is saved or loaded
• Fixed a linear frequency amplitude bug
• Added computation of rms amplitude in frequency data. This is displayed on the Peaks List view (iPad only)
• Added ability to move the peaks list by dragging with your finger. (iPad only)
• Fixed bug which resulted in a blank location field in data files
Vibration version 3.91
Updated At: 2020-06-08
Changes: Jun 8, 2020 Version 3.91
• Fixed bug where Clear Data button did not appear on iPad
• Add a Plot All Points option to the Time Series Display for those times when you need to see every data point.
• Change Sample Rate to Fmax which is the maximum frequency which can be measured. This is the way most user think when doing frequency analysis
• You can now drag the 5 highest peak display window around on the iPad to move it away from the data you want to view
Vibration version 3.90
Updated At: 2020-04-30
Changes: Apr 30, 2020 Version 3.90
• Converted file Save and Load to use the Files interface
• Fixed bug where integrate and differentiate buttons did not show up on iPad.
Disclaimer
Official App Store Link
We do not host Vibration on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Apple and passed their terms and conditions to be listed there. We recommend caution when installing it.
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