Published by Dmitriy Kharutskiy
1. FFT size: 2048 (the accuracy of determining the frequency of ±12 Hz), 4096 (±6 Hz), 8192 (±3 Hz), 16384 (±2 Hz), 32768 (±1 Hz), 65536 (±0. 5 Hz), 131072 (±0. 2 Hz). • Linear frequency scale with maximum details (there is a choice for the displayed frequency range). • Window functions (Blackman, Hamming, Hann (Hanning), Blackman–Nuttall, Gaussian, Flat top). • Values of any point (for frequency scale and sound wave (at maximum detail)). • Sound level meter (dB SPL).
2. ESTIMATE THE TOTAL NOISE LEVEL BY USING THE SOUND WAVE MODE AT THE MAXIMUM VALUE. • Taking a screenshot by lightly touching the screen. • Export data to a WAV or text file ("Y=[y1 y2... yn]", "y1;y2;... yn", "x1;y1\nx2;y2;.. ". ).
3. Number of points is adjusted via "FFT size". • Automatic stop in the sound wave mode (when increasing or decreasing signal strength). • Automatic stop in the spectrum mode.
4. The beginning of the signal is not calculated accurately (just like with an automatic stop in the sound wave mode). • Saving the measurement results in the application.
5. When the sound is almost inaudible, it is necessary to find the amplitude for the frequency of 1000 Hz on the spectrum (FFT size: 16384).
6. To interpolate the frequency of the peak, select the Gaussian window (the accuracy of determining the frequency can increase by 10-100 times).
7. The calculation is not done for the extreme bins or if the adjacent bin is zero. • Calculation of the amplitude (in the list of peaks) using neighboring bins (to compensate for spectral leakage and use of the window).
8. You can calibrate your microphone by launching a signal generator with a sinusoid frequency of 1000 Hz on another device and making the volume very low.
9. The amplitude of the waveform can be changed in the sound wave mode. • Calibration file.
10. There are buttons for quick loading and comparing saved files. • List of frequency peaks.
11. Files with saved data (SavedData_[date]_[time]. txt) can be copied to a desktop/laptop computer or transferred to another iPhone using iTunes.
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| App | Download | Rating | Maker |
|---|---|---|---|
 Sound Spectrum Analysis |
Get App or Alternatives ↓ | 5 Reviews 4.59999 |
Dmitriy Kharutskiy |
Can I download Sound Spectrum Analysis for free?
Yes! You can Download Sound Spectrum Analysis from official sites for free using our site.
Can I use Sound Spectrum Analysis on PC?
It is easy to use the Sound Spectrum Analysis app on PC and it works on Windows and MAC. A free tutorial is available to help you get started.
