DiGi+ Sound & Noise Analyzer

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

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

This app (ad-supported) has more features (+) than the basic edition.

>>SLM Main features:
• Sound Level Meter (SLM)
• simple calibration settings
• 3 measuring modes (Dynamic, Average, Cumulative)
• 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
• cumulative sound level chart
• tested with samsung galaxy S S2 S3 S4
• sharing of text values and screen bmp
• sound level distribution chart
• start/stop button
• automatic on/off of system volume
+ dbA weighting filter curve

>>RTA Main features:
+ Basic Real Time Spectrum Analyzer (RTA)
+ sound level versus linear frequency chart
+ fixed FFT size ( 2048, about 20 Hz accuracy )
+ 4 values versus selected frequency component displayed (current, mean, max, min)
+ 20hz/22kHz band, 44100 Hz sampling rate

>>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). 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 (100ms) , Average (1 sec), Cumulative (TNI) , Spectrum (Hz)

>>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

>>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).
2) No signals detected below 20dB or over 100dB: most smart phone microphones do not work under 20 dB or over 100 dB

>>More
More functions are available in the Pro edition (no ads):
+ Full Spectrum Analyzer (RTA)
+ 5 spectrum measuring modes (dynamic, average, peak, avg & exp smoothing)
+ 4 spectrum measuring bands (hearing, voice, low, high, zoom)
+ long press to zoom: long press on chart triggers zoom centered on currrent frequency
+ 2 spectrum views (Panel & Chart, Landscape Chart)
+ tap or swipe to select the proper frequency step
+ to increase accuracy: adjustable FFT size (up to 8192, about 5Hz acc )
+ to increase smoothness: adjustable FPS (up to 20) , SMA & SES
+ linear frequency axis with many frequency bands (hearing, voice, low, high, zoom)
+ sound level versus logarithmic frequency chart
+ SLM weighting filter curves: dBA, dBB, dBC according to DIN-IEC 651
+ exporting (CSV/PNG)

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

Free download from Shareware Connection - This application brings the functionalities of a Sound Level Meter (SLM) and a basic Real Time Spectrum Analyzer (RTA) to your phone.Analyze the ambient (background) noise and the traffic noise (TNI)!This app (ad-supported) has more ...

Publisher: Gaia Consulting | License: Freeware | Price: 0.00
Version: 2.0.1 | Size: 2252 KB | Platform: Android 2.x,Android 3.x,Android 4.4,Android 4.x
Released Date: 07-07-2014 | Rating: 0 | Title: DiGi+ Sound & Noise Analyzer

Author Url: http://www.gaiacons.com
Program Info Url: http://www.gaiacons.com
Download Url: http://www.gaiacons.com

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