Spectrum Spectrogram Analyzer app icon

Spectrum Spectrogram Analyzer

A handy real-time audio spectrum and spectrogram analyzer.

Eddy Xiao · github.bewantbe.audio_analyzer_for_android

Not rated yet 10K+ downloads v1.6.9 1.5 MB Android 4.0+ PEGI 3 · Everyone

Download APK 1.5 MB All versions

At a glance

Latest version
v1.6.9 (20180110)
Updated
Feb 11, 2019 (7 years ago)
APK size
1.5 MB
Requires
Android 4.0+ (API 14)
CPU support
Any (no native code)
Category
Music & Audio (app)
Permissions
3 (2 sensitive)
Website
github.com/bewantbe/audio-analyzer-for-android
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Spectrum Spectrogram Analyzer is an app by Eddy Xiao in the Music & Audio category. It has no native code, so it runs on any Android processor.

It asks for 3 permissions, 2 of them sensitive: record audio and modify shared storage.

What's new in v1.6.9

First new year update: * Add more window functions. * Add 96kHz and 192kHz sampling rate (need device support). * Fix spectrogram mode graphical bug on Android 8.0, 8.1.

Description

From the listing uploaded by “project-zero”.

Designed with accuracy and easy of use in mind. Can be used for monitoring or measuring environmental sound or noise; help tuning instruments; timing short sound events; and educational purpose. Features: * No Ads. * With log or linear frequency axis. * Can label frequency axis using music pitch note. * Support all possible sampling rates and almost all recorder sources of your device. * Graph with nice grid lines and labels, easy to operate. * FFT sample size range from 512 to 8192. Using half-overlapped (adjustable) time window to increase time resolution. * Various window functions provided, for different frequency resolution and dynamical range. * Peak frequency detection (in unit of Hz and note+cent), with a moderate accuracy (FFT + interpolation). * With dB or A-weighting dB (dBA). * Can record the audio in wav (PCM) format. * Pinch to zoom, drag or swipe to move, long-press to place cursor, double touch to reset zoom. Notes: ** May need some knowledge of discrete Fourier transform and spectrum analysis to use it well. ** The actual accuracy mainly depends on your device. No calibration interface provided. Comments and suggestions are welcome.

Security & authenticity

Security rating: Trusted

Signing certificate

  • Certificate issued to “xyy” Not the developer's name (“Eddy Xiao”). Names in certificates can't be verified, so this alone proves nothing.

Store checks and file details

  • Developer signature verified Feb 11, 2019
  • Antivirus scan passed Oct 13, 2020
  • Signed byCN=xyy
  • Signing certificate (SHA-1)98:37:D9:33:63:88:36:F5:BE:D8:11:F8:FB:A4:4E:42:3D:6E:34:5B
  • File MD52abf03f083acca8706ba1327e0fa02df
  • Uploaded by “project-zero” Silver tier · 3,886 followers · uploading since 2017

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (3)

Spectrum Spectrogram Analyzer requests 3 permissions, 2 of them sensitive.

Required hardware & features

Spectrum Spectrogram Analyzer APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Spectrum Spectrogram Analyzer APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is 2abf03f083acca8706ba1327e0fa02df.

Tags

github bewantbe audio_analyzer_for_android music audio spectrum analyzer

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