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Sound Spectrum Pro Screenshot 0
Sound Spectrum Pro Screenshot 1
Sound Spectrum Pro Screenshot 2
Sound Spectrum Pro Screenshot 3

About Sound Spectrum Pro

RTA (Real-Time Analyzer), FFT (amplitude display driven by Fast Fourier Transform), calibration, signal generators...

Everything is included, bundled in a friendly interface with many on-screen controls and smooth real-time display.

== Features ==

+ FFT (amplitude) and RTA (octave, 1/3 octave, ... down to 1/24 octave).
+ Sound pressure level dBA, dBC, and dBZ.
+ Noise Criterion and Noise Rating in octave RTA.
+ Equivalent continuous sound level LAeq, LCeq, LZeq, LAeq15, LAeq60.
+ Impulse response and RT60 measurement.
+ Large font SPL + LEQ meter.
+ THD+N Total Harmonic Distortion plus Noise
+ Lightning-fast FFT with size from 16k to 512k, providing frequency resolution of 0.1Hz directly and 0.01 Hz with downsampling.
+ Sample rate of 48kHz, if supported by the device.
+ Many window functions to choose from.
+ Logarithmic or linear frequency axis.
+ Peak and valley hold with adjustable decay.
+ Highest peak display
+ Adjustable exponential smoothing.
+ Easy pan (drag) and zoom (pinch).
+ Measurement cursors, also used for setting frequency of signal generators.
+ File load/save and full calibration capability, for accurate SPL readings.
+ Signal generators: tone, white noise, white sweep, pink noise, pink sweep, pink octave, pink 1/3 octave.
+ Synchronous measurement mode (including frequency sweep) for clean and fast spectrum analysis.
+ Loopback mode to try out signal generators and window functions.
+ Sharing and printing of screenshots.
+ No ads!

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author
Excellent features as compared to similar apps. Easy to use but also suitable for engineering applications. Well worth the $.
David Burd
author
Great for frequency responses and calibration. 20Hz to 20khz tested, RT60 accuracy via IR, 94 dB /114 dB spl calibration achieved. Can print pdf for reports, able to load . frd and. cal files from calibratio...
Lou Garcia
author
It is an amazing customisable app, probably the best for android. Definetely recommend for others
Benas Jurevičius