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Semi-log Spectrogram 14.0

1.5 MB / 1+ Downloads / Rating 5.0 - 1 reviews


See previous versions

Semi-log Spectrogram, developed and published by AndWaves, LLC, has released its latest version, 14.0, on 2023-12-10. This app falls under the Tools category on the Google Play Store and has achieved over 100 installs. It currently holds an overall rating of 5.0, based on 1 reviews.

Semi-log Spectrogram APK available on this page is compatible with all Android devices that meet the required specifications (Android 6.0+). 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.andwaves.spectrogramx

Updated: 1 year ago

Developer Name: AndWaves, LLC

Category: Tools

New features: Show more

App Permissions: Show more

Installation Instructions

This article outlines two straightforward methods for installing Semi-log Spectrogram 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.

Previous Versions

Semi-log Spectrogram 14.0
2023-12-10 / 1.5 MB / Android 6.0+

About this app

A spectrogram is a picture of how sound changes with time, similar to the "voiceprints" one sees on TV shows.

This real-time spectrogram covers the full 22 KHz audio bandwidth, the same as a compact disk (CD).

The output is a display in the form a waterfall plot that presents the frequency spectrum of the audio as it changes in time. The horizontal axis is frequency plotted in semi-log scale. Lower frequencies are to the left, higher frequencies are to the right.

A moving horizontal line is added just ahead of the most recent horizontal line of data so the user can identify the latest data.

The user may choose the signal intensity be plotted on a color or gray scale. Red represents a strong signal, blue a weak signal.

Semi-log or linear plots is user-selectable via the Options menu in the upper right.

The sensitivity control operates on a logarithmic scale in order to cover the huge dynamic range of ordinary sounds, from very soft, to very loud. So expect to see the sensitivity levels with jumps such as 1, 2, 3, 5, 10, 20, 50, 100, 200 et c.

Technical details
This spectrogram collects 1024 samples at a sampling rate of 44,100 Hertz every 150 milliseconds. Each collection of 1024 samples corresponds to a single horizontal line in the display as shown in the screenshots.

Have fun looking at the “sound prints” of ordinary things. To learn more about frequency spectra see the one-page tutorial on our website, https://sites.google.com/a/andwaves.com/www/home/about-fourier-transforms

I appreciate receiving feedback or any recommendations for improvements to this application. Please contact me at developer@andwaves.com with any questions or recommendations that you may have.

For information about this or other AndWaves products, see www.andwaves.com

New features

Update

App Permissions

Allows an application to record audio.
Allows applications to open network sockets.
Allows applications to access information about networks.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.