Spectrum Analyser APK
- Developer
-
- Current Version
- Date Published
- January 01, 1970
- File Size
- Package ID
- com.keuwl.spectrumanalyzer
- Price
- $ 0.00
- Downloads
- 55.4K+
- Category
- Android Apps
- Genre
- Music & Audio
Download APK
Safe
APK Version History
- Version
- 1.40 (6)
- Architecture
- arm64-v8a
- Release Date
- February 06, 2021
- Requirement
- Android 5.1+
Download [ 1.4 MB ]
Safe
- Version
- 1.31 (5)
- Architecture
- arm64-v8a
- Release Date
- March 13, 2017
- Requirement
- Android 5.1+
- Version
- 1.3 (4)
- Architecture
- arm64-v8a
- Release Date
- June 22, 2016
- Requirement
- Android 5.1+
About Radio FM 90s
Audio spectrum analyser for your microphone.
64 up to 8192 frequency divisions (128 to 16384 FFT size).
22 kHz spectrum range (can reduce down to 1 kHz for higher resolution).
FFT Windowing (Bartlett, Blackman, Flat Top, Hanning, Hamming, Tukey, Welch, or none)
Auto-scale or pinch to zoom, drag to pan.
Linear or logarithmic scales.
Peak frequency detection (polynomial fit).
Averaging, Min and Max.
Save CSV data files (uses Write External Storage Permission).
Free or snap to peak cursor.
Octave Bands - Full, half, third, sixth, ninth or twelfth bands.
Weighting – A, C or None (A weighting filters the high and low frequencies according to how the ear perceives sound loudness).
Musical note indicator (green if within 5 cents, orange if within 10 cents).
Auto-scaling microphone input trace.
For best response on slower devices, keep the FFT size low.
More detailed explanation available on website
64 up to 8192 frequency divisions (128 to 16384 FFT size).
22 kHz spectrum range (can reduce down to 1 kHz for higher resolution).
FFT Windowing (Bartlett, Blackman, Flat Top, Hanning, Hamming, Tukey, Welch, or none)
Auto-scale or pinch to zoom, drag to pan.
Linear or logarithmic scales.
Peak frequency detection (polynomial fit).
Averaging, Min and Max.
Save CSV data files (uses Write External Storage Permission).
Free or snap to peak cursor.
Octave Bands - Full, half, third, sixth, ninth or twelfth bands.
Weighting – A, C or None (A weighting filters the high and low frequencies according to how the ear perceives sound loudness).
Musical note indicator (green if within 5 cents, orange if within 10 cents).
Auto-scaling microphone input trace.
For best response on slower devices, keep the FFT size low.
More detailed explanation available on website
What's New in this version
Version 1.42: Updated to use newer code libraries to target newer devices.
If you use the app to save data, the files will now be located in the documents folder, in a \keuwlsoft\spectrum_analyser sub directory.