Sound Spectrum Pro v1.90 (Paid) Apk
+ 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!