Sound Spectrum Pro

4.3
66 reviews
1K+
Downloads
Content rating
Everyone
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About this app

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 1M, providing frequency resolution of 0.05Hz directly and 0.01Hz 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!
Updated on
Feb 7, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Ratings and reviews

4.3
61 reviews
Jordan Banonis
March 11, 2024
Great way to analyze noises, whether heard by the human ear or, more importantly for me, noises undetected by the human ear. The reason I downloaded it since I have a constant ringing in my ears that started a while back so was trying to pinpoint if something I couldn't hear readily was causing this. Found a lot of noise around the 50 to 60 Hz range which coincidentally is the same range as what all of our electronic devices run at. Hmmmm. I find this interesting and a bit disturbing.
16 people found this review helpful
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A Google user
March 14, 2019
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 tone frequency to measure THD. It will be difficult to select a tone or follow a sweep if using external sweep or tone. Would suggest max peak also has the THD displayed along with the peak frequency and level. 2. If can draw THD vs freq after sweep(internal or external), would be perfect. 3. For frequency sampling, if software can load microphone calibration files, like Dayton iMM-6 provided, would be perfect for seeing more accurate frequency response.
30 people found this review helpful
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Lou Garcia
December 1, 2020
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 calibration lab. Sweep/Noise acurate. It will be a +++ if the app can show in/out phase, STIPA readings and EQ suggestion in loudspeaker tuning & TF Snapshots Overlay. Awaiting further development. Pls mention IEC/ISO standards followed. Thank you! (Not Compatible with Android 10)
14 people found this review helpful
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What's new

Android 14 compatibility