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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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Frequently Asked Questions(FAQ)

What are the features of Sound Spectrum Pro?

The features of Sound Spectrum Pro include FFT and RTA analysis, sound pressure level measurements, noise criterion and rating, impulse response and RT60 measurement, large font SPL and LEQ meter, THD+N Total Harmonic Distortion plus Noise measurement, lightning-fast FFT with adjustable resolution, sample rate of 48kHz, various window functions, logarithmic or linear frequency axis, peak and valley hold with adjustable decay, measurement cursors, file load/save and calibration capability, signal generators for tone and noise, synchronous measurement mode, loopback mode, sharing and printing of screenshots, and no ads.

What can Sound Spectrum Pro measure?

Sound Spectrum Pro can measure FFT (amplitude), RTA (octave, 1/3 octave, down to 1/24 octave), sound pressure level in dBA, dBC, and dBZ, noise criterion and rating in octave RTA, equivalent continuous sound level in LAeq, LCeq, LZeq, LAeq15, and LAeq60, impulse response, RT60, THD+N (Total Harmonic Distortion plus Noise), and highest peak display.

It is an amazing customisable app, probably the best for android. Definetely recommend for others

Benas Jurevičius

Excellent features as compared to similar apps. Easy to use but also suitable for engineering applications. Well worth the $.

David Burd

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

Best on Android. UI is very confusing though, for the sake of ease of access i presume but it is very hard to set the app correctly.

Cansın Dugan

Wonderful tools! Quick response with good features like sweep sound and tone generation. Can read THD is a good plus! Several suggestions: 1. For measuring THD, as software needs to manually select the t...

Perry Wang