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DiGiFree Sound Meter

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This application brings the functionalities of a basic Sound Level Meter (SLM) to your phone.

>>Main features:
• simple calibration settings
• 2 measuring modes (Dynamic, Average)
• current value, dB avg, dB min and dB max display
• sound level versus time chart
• threshold trigger
• sharing of text values
• sharing of screen bmp
• tested with samsung galaxy S S2 S3 S4

>>Data collection
The application relies on the mobile microphone signal. To achieve the best results consider the following:
1) Calibration (only the first time): the default calibration values are suitable for most smart phones. Some mobiles are automatically calibrated in the first installation phase (Samsung GT-I9000,GT-I9300, GT-S5570). 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)

>>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

1) Wrong SPL maximum value: all your measurement are higher or lower than expected. Enter in the settings menu and select the correct SPL maximum value (default 90).
2) Wrong SPL calibration: only low or/and high level measurements are higher or lower than expected. See the Calibration section and type the right calibration values.
3) Attenuation on mobile microphone: your measurements never reach the full scale (-3/-6 dB) even with a high noise (or just blowing on the mic.). Restart android (there is a signal return from the speaker to microphone and an attenuation is still active on the microphone)
4) No signals detected below 20dB or over 100dB: The smart phone microphones do not work under 20 dB or over 100 dB (they are calibrated for human voice, 30/70 dB)
5) Your mobile employes AGC: Automatic Gain Control introduce significant measurement errors (greater than 3dB) and limited range (maximun SPL may be less then 80dB), and in this case we do not recommend to use this application on your mobile.

More functions are available in the PRO EDITION (DiGiPro Spectrum Analyzer):

+ Real Time Spectrum Analyzer (RTA)
+ sound level versus linear frequency chart
+ sound level versus logarithmic frequency chart
+ 5 spectrum measuring modes (dynamic, average, peak, avg & exp smoothing)
+ 4 spectrum measuring bands (hearing, voice, low, high, zoom)
+ 20hz/22kHz band , 44100 Hz sampling rate
+ adjustable FFT size (up to 8192) , adjustable FPS (up to 20)

+ SLM weighting filter curves: dBA, dBB, dBC according to DIN-IEC 651
+ TNI (Traffic Noise index) display
+ sound level distribution chart
+ sound level cumulative chart

+ exporting of measures (CSV)
+ exporting of chart data (CSV)
+ exporting of screenshot (PNG)

Phonometer, SLM, sound level meter, audio meter, SPL, dB, decibel, sound meter, decibel meter, fonometro

Free download from Shareware Connection - This application brings the functionalities of a basic Sound Level Meter (SLM) to your phone.>>Main features:• simple calibration settings• 2 measuring modes (Dynamic, Average)• current value, dB avg, dB min and dB max ...

Publisher: Gaia Consulting | License: Freeware | Price: 0.00
Version: 2.0.0 | Size: 1638 KB | Platform: Android 2.x,Android 3.x,Android 4.4,Android 4.x
Released Date: 15-12-2014 | Rating: 0 | Title: DiGiFree Sound Meter

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

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Shareware Connection periodically updates pricing and software information of 'DiGiFree Sound Meter' from company source 'Gaia Consulting' , so some information may be slightly out-of-date. You should confirm all information before relying on it. Software piracy is theft,  Using 'DiGiFree Sound Meter' crack, password, serial numbers, registration codes, key generators is illegal and prevent future development of DiGiFree Sound Meter.

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