DiGiPro SPL Spectrum Analyzer

DiGiPro SPL Spectrum Analyzer

500 - 1,000 downloads

Add this app to your lists
This application brings the functionalities of a Sound Level Meter (SLM) and a Real Time Spectrum Analyzer (RTA) to your phone.

Analyze the ambient (background) noise and the traffic noise (TNI)!

This app has much more features (+) than the basic edition (no ads).

>>SLM Main features:
• Sound Level Meter (SLM)
• 3 SLM measuring modes (Dynamic, Average, Cumulative)
+ 3 SLM weighting filter curves: dBA, dBB, dBC according to DIN-IEC 651
• simple calibration settings
• current value, dB avg, dB min and dB max display
• sound level versus time chart
• threshold trigger
• current value, L90, L50 and L10 values display
• TNI (Traffic Noise index) display
• accumulated sound level chart
• tested with samsung galaxy S S2 S3 S4
• sharing of text values
• sharing of screen bmp
+ sound level distribution chart
+ start/stop button
+ automatic on/off of system volume
+ exporting of measures (CSV)
+ exporting of chart data (CSV)
+ exporting of screenshot (PNG)

>>RTA Advanced features:
+ Real Time Spectrum Analyzer (RTA)
+ sound level versus linear frequency chart
+ sound level versus logarithmic frequency chart (HzLog)
+ 5 spectrum measuring modes (dynamic, average, peak, avg/exp smoothing)
+ 2 spectrum views (Panel & Chart, Landscape Chart)
+ tap or swipe to select the proper frequency step
+ linear frequency axis with many frequency bands (hearing, voice, low, high, zoom)
+ long press to zoom: long press on chart triggers zoom centered on marked frequency
+ tap to pause/start data collection
+ 4 values versus selected frequency component displayed (current, mean, max, min)
+ 20hz/22kHz band, 44100 Hz sampling rate
+ adjustable FFT size (up to 8192, about 5 Hz accuracy) , adjustable FPS (up to 20)
+ exporting of measures (CSV)
+ exporting of chart data (CSV)
+ exporting of screenshot (PNG)

>>Data collection
The application relies on the mobile microphone signal. To achieve the best results consider the following:
1) Easy Calibration (only the first time): Some mobiles are automatically calibrated in the first installation phase (Samsung Galaxy 1/5). For details see the calibration section of the user manual.
2) keep your fingers away from the mobile microphone
3) silence your phone to avoid any ring tones, vibrations and other sounds
4) orient the phone microphone toward the noise source keeping the correct distance
5) click on the function buttons: Dynamic , Average, Cumulative, Spectrum

>>Data analysis
Every function displays a chart and numeric values:
1) Dynamic: sound level versus time chart and current value. Minimum value, maximum value and average value of the entire observation period are also provided
2) Average: sound level versus time chart and current value. Minimum value, maximum value and average value of the entire observation period are also provided
3) Cumulative: accumulated sound level chart and current value. TNI, L90 value, L10 value and L50 value of the entire observation period are also provided.
4) Spectrum: sound level versus frequency chart and current value. Minimum value, maximum value and average value of the selected frequency component of the entire observation period are also provided.

>>Troubleshooting
1) Wrong SPL calibration: See the Calibration section and type the right calibration values (upgrade from ver 1 to 2 may require to reset the 30SPL setting parameter to a smaller offset).
2) No signals detected below 20dB or over 100dB: most smart phone microphones do not work under 20 dB or over 100 dB
3) Signal attenuation near band limits: the mobile mic may attenuate frequencies <100 Hz and >15000 Hz

TAGS
Spectrum Analyzer, RTA, FFT, Fast Fourier Transform, Phonometer, SLM, sound level meter, audio meter, SPL, dB, decibel, sound meter, noise meter, decibel meter, fonometro, TNI, traffic noise index

Tags: spectrum analyzer, free rta analyzer, spl analyzer, check current frequency band, slm and a spectrum analyzer, free spl measurement in samsung spectrum analyser, real time audio spectrum analyzer sound level meter rta, db meter with spectrum, analyzer sound di.

Recently changed in this version

2.0.2
- Pic share bug removal

2.0.1
+ New sound engine
+ Automatic removal of AGC


Comments and ratings for DiGiPro SPL Spectrum Analyzer

  • There aren't any comments yet, be the first to comment!