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Spectrogram 11.3

1 MB / 1+ Downloads / Rating 2.3 - 3 reviews


See previous versions

Spectrogram, developed and published by AndWaves, LLC, has released its latest version, 11.3, on 2011-12-28. This app falls under the Music & Audio category on the Google Play Store and has achieved over 100 installs. It currently holds an overall rating of 2.3, based on 3 reviews.

Spectrogram 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.andwaves.spectrogram

Updated: 13 years ago

Developer Name: AndWaves, LLC

Category: Music & Audio

New features: Show more

Installation Instructions

This article outlines two straightforward methods for installing 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.

App Rating

2.3
Total 3 reviews

Reviews

1 ★, on 2012-12-16
I was disappointed and this did not meet my expectations. Its not worth the money

1 ★, on 2015-11-08
Bab not worth trying

5 ★, on 2011-11-14
Really works!

Previous Versions

Spectrogram 11.3
2011-12-28 / 1 MB / Android 2.3+

About this app

Real-time spectrogram has full 22 KHz spectral bandwidth. No advertisements.

The output is a display in the form of an image that represents the frequency spectrum of the audio as it changes in time. Intensity is plotted on a rainbow log scale. Red represents a strong signal, blue a weak signal. A linear gray scale is also included.

Options are available via the Android Menu key. The user may toggle a grid to overlay the spectrogram. The spacing between vertical lines is 2000 Hz.

This spectrograph 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 actual screenshots. A moving set of gridlines is added just ahead of the most recent horizontal line of data so the user can measure frequency. These lines are 2 KHz apart.

The Spectrogram frequencies may be verified by using the AndWaves AudioGenerator software to play tones or by playing a YouTube video of test-sounds (free) at: http://www.youtube.com/watch?feature=player_embedded&v=i_M46ysxMEg

The feature graphic on the Android Marketplace shows the “sound prints” of various activities, including those of cricket chirping. The phone itself seems to introduce an noise into the spectrum around 10 and 12 KHz, as well as thin lines at 7,200 and 14,400 Hertz.

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


The program uses the new Google licensing standard. In theory this means the program can be copied to an SD card, freeing up internal memory in the Android, although I haven’t tried it.

If you need help or would like to discuss your application, I will be happy to spend a few minutes with you on the phone (321.252.8205).

New features

Removed ambient noise cancellation (at least for the time being) in order to eliminate problems running on some phones.
App is more robust and only uses 1/2 MB of memory.