Audalyzer is an audio analyser for Android phone that displays sounds readings from the microphone as a waveform, frequency spectrum, and dB meter.


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Developer: Moonblink

Category: System

Latest version: 1.9

Total versions: 15

Submitted: 11 Nov 2010

Updated: 11 Nov 2010


Audalyzer is a simple audio analyser for Android. It displays sound readings from the microphone as a waveform display, as a frequency spectrum, and as a dB meter. dB levels are relative to the maximum input level of your device.

- Displays waveform, frequency spectrum, and dB meter.
- Meter shows instantaneous, average, and peak values.

It is impossible to generate accurate sound level readings with this app, since microphone sensitivity varies between individual devices. Thus, all data should be taken with a pinch of salt. However, it may be interesting when used to compare sound readings at different locations.

Note: Starting at version 1.2, Audalyzer needs Android 1.6. It is necessary to be based on 1.6 in order to be able to handle large screens (like Droid) correctly. Meantime, Android 1.5 users can use APK for Audalyzer 1.1.


Audalyzer 1.9 seem to be the latest available version. Below you can find file(s) assigned to this version:

Description/changelog of Audalyzer 1.9:

Released: January 10, 2010.
- Lay out the gauge labels better on QVGA / HTC Tattoo.

Old versions

Below are the earlier versions of Audalyzer.

Audalyzer 1.8

Description/changelog of Audalyzer 1.8:

Released: January 6, 2010.
- The windowing function in use is now selectable, including no windowing.


Audalyzer 1.7

Description/changelog of Audalyzer 1.7:

Released: December 13, 2009.
- Use windowing to improve the spectrum analysis. Also fixed a bug with text blacking out in the about box when scrolling, and added helps links to report bugs etc.


Audalyzer 1.6

Description/changelog of Audalyzer 1.6:

Released: December 6, 2009.
- Added help on interpreting the output.


Audalyzer 1.5

Description/changelog of Audalyzer 1.5:

Released: December 6, 2009.
- Better help facility. The spectrum graph now doesn't auto-scale, but has a log scale.


Audalyzer 1.4

Description/changelog of Audalyzer 1.4:

Released: November 29, 2009.
- The audio input settings such as sample rate are now configurable. A performance stats display is added. From this version on, 0.6dB is added to the power level, to make it possible (though hard) to get a zero value.


Audalyzer 1.3

Description/changelog of Audalyzer 1.3:

Released: November 21, 2009.
- Better display, with a grid/frequency scale on the spectrum display. Using a much faster FFT.


Audalyzer 1.2

Description/changelog of Audalyzer 1.2:

Released: November 11, 2009.
- Better screen layout, Android 1.6 version. Added keep awake option.


Audalyzer 1.14

Description/changelog of Audalyzer 1.14:

Released: July 1, 2010.
- Allow install to SD on Android 2.2.


Audalyzer 1.13

Description/changelog of Audalyzer 1.13:

Released: June 19, 2010.
- Some improved error handling; maybe fix a crash some folks are seeing.


Audalyzer 1.12

Description/changelog of Audalyzer 1.12:

Released: February 13, 2010.
- Fixed a bug where a spike was displayed at 0kHz.


Audalyzer 1.11

Description/changelog of Audalyzer 1.11:

Released: January 23, 2010.
- Fixed block size setting bug.


Audalyzer 1.10

Description/changelog of Audalyzer 1.10:

Released: January 23, 2010.
- Maximum sampling rate is now 44,100, so frequencies up to 22kHz can be sampled. Smallest block size is now 128 samples, which results in 64 frequency bins.


Audalyzer 1.1

Description/changelog of Audalyzer 1.1:

Released: November 9, 2009.
- Dynamic screen layout, Android 1.5 version.


Audalyzer 1.0

Description/changelog of Audalyzer 1.0:

Released: November 7, 2009.
- First half-decent version.



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Other apps

There are 6 more apps by Moonblink for Android:
Touch Test
Test Card
Scrambled Net