deciBel is the result of a serious effort to make an Android based SPL meter as close to a professional-grade device as the phone hardware limitations allow. It uses a Fast Fourier Transform algorithm to implement a high precision A weighting ...Read more
deciBel is the result of a serious effort to make an Android based SPL meter as close to a professional-grade device as the phone hardware limitations allow.
It uses a Fast Fourier Transform algorithm to implement a high precision A weighting filter and sophisticated digital signal processing techniques to achieve the best possible SPL readings out of your Android phone or tablet.
It displays the current, maximum and minimum values in decibels, and generates 3 kinds of sound pressure level versus time charts. The display can be turned upside down to allow pointing the mic at the sound source.
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### Please calibrate before the first use! ###
- true A-Weighting (ANSI S1.4) - simple calibration interface - numeric dB, dBmin and dBmax display - sliding sound level versus time chart - sliding max, min and average soud level versus time chart - accumulated sound level exposition chart (dosimeter) - saves chart screen shots to the SD card - dominant frequency display - 22Khz bandwidth at the input of the weighting filter - 1024 point real time FFT and digital sound processing - movable to the SD card
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UPDATED ON: Jul 27, 2015
INSTALLATIONS: 500,000 - 1,000,000
LATEST VERSION: 1.5.23
REQUIRED ANDROID VERSION: 2.3.3 and up
Allows application to access the audio recording path.
prevent phone from sleeping
Allows an application to prevent the phone from going to sleep.
full Internet access
Allows an application to create network sockets.
view network state
Allows an application to view the state of all networks.
modify/delete SD card contents
Allows an application to write to the SD card.