Spectrum Spectrogram Analyzer
A handy real-time audio spectrum and spectrogram analyzer.
Eddy Xiao · github.bewantbe.audio_analyzer_for_android
UpdatedFeb 11, 2019
PublishedFeb 11, 2019
Packagegithub.bewantbe.audio_analyzer_for_android
MD52abf03f083acca8706ba1327e0fa02df
SHA1 (signer)98:37:D9:33:63:88:36:F5:BE:D8:11:F8:FB:A4:4E:42:3D:6E:34:5B
Signed byCN=xyy
Malware scanTRUSTED
Contact[email protected]
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What's new
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.
* 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
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.
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.
Required features
- Microphone android.hardware.microphone
- Touchscreen android.hardware.touchscreen
Permissions (3)
Spectrum Spectrogram Analyzer requests the following Android permissions:
- Record Audio android.permission.RECORD_AUDIO
- Vibrate android.permission.VIBRATE
- Write External Storage android.permission.WRITE_EXTERNAL_STORAGE
