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pro acoustic frequencies 1.2

1.3 MB / 5+ Downloads / Rating 4.4 - 9 reviews


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pro acoustic frequencies, developed and published by Kröber, has released its latest version, 1.2, on 2017-11-19. This app falls under the Music & Audio category on the Google Play Store and has achieved over 500 installs. It currently holds an overall rating of 4.4, based on 9 reviews.

pro acoustic frequencies APK available on this page is compatible with all Android devices that meet the required specifications (Android 2.3+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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App Screenshot

App Screenshot

App Details

Package name: com.kroeber.pro_acoustic_frequencies

Updated: 7 years ago

Developer Name: Kröber

Category: Music & Audio

New features: Show more

Installation Instructions

This article outlines two straightforward methods for installing pro acoustic frequencies on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

App Rating

4.4
Total 9 reviews

Previous Versions

pro acoustic frequencies 1.2
2017-11-19 / 1.3 MB / Android 2.3+

About this app

PRO-VERSION:
The APP captures the acoustic pressure by the internal microphone in function of time. The sampling frequency is always 8000 Hz.

Buttons arranged on the top:

Low: Low frequency resolution, for fast response
frequency resolution approx. 15.6 Hz

Med: Medium frequency resolution (only available in PRO-version)
frequency resolution approx. 3.9 Hz

High: High frequency resolution (only available in PRO-version)
frequency resolution approx. 1.0 Hz

"Ultra high Frequency Resolution" --> see below

Stop: Stops the measurement

Exit: Terminates the APP

Description of the graphics (from top to bottom):
1st graphic with sound level trend:
Sound level trend of the last 12 seconds, scaling from 0 dB to 90 dB.

By wiping across the 1st graphic (wiping always from bottom left to top right over the relevant graphic) the numerical current value is displayed.

2nd graphic with sound pressure in function of time

3rd graphic for tone identification:
If a clear tone within the frequency spectrum can be determined, the tone will be displayed with a red bar.

4th graphic with numerical peak-frequency and frequency spectrum:
The numerical frequencies of the three highest peaks will be displayed. For better reading you can stop the measurement with the "Stop"-button.

5th graphic third octave band analysis:
For acoustic assessments the third octave spectrum is used. The relevant frequency range from 100 Hz (limited due to the frequency response of the internal microphone) to 3150 Hz (limited due to the sampling frequency) is displayed.
Only available in PRO-version:
The frequency response of the internal microphone was calibrated in a diffuse sound field to a reference device. This calibration has been performed on a Samsung Galaxy S2. The displayed third octave dB-values include this correction and the A-weighting.

Other implemented wiping gestures:

Ultra high frequency resolution (only available in PRO-version):

By wiping across the 4th graphic (wiping always from bottom left to top right over the relevant graphic) an ultra-high frequency resolution will be activated, frequency resolution approx. 0.5 Hz.

Higher integration time (only available in PRO-version):
By wiping across the 5th graphic (wiping always from bottom left to top right over the relevant graphic) the averaging time of the displayed third octave values is increased by a factor of 5.

Show internal diagnostic data:
By wiping across the complete display (wiping always from bottom left to top right) internal data is displayed in the lower part of the display.

For more details:
http://www.hs-koblenz.de/profile/kroeber/

Keywords: acoustic, frequency, tone detection, frequency analysis, third octave analysis, dBA, FFT

New features

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