2.3.5
2023-09-11
• Bug fixes.
2.3.4
2023-01-28
• Changing the start frequency of the logarithmic scale when zooming (moving along the logarithmic scale when zooming).
• Added black color theme.
• Adaptation for iPhone 14 Pro.
• Bug fixes.
2.3.3
2022-02-14
• Minor changes in text design.
2.3.2
2022-02-02
• Bug fixes.
2.3.1
2021-11-09
• Minor changes in text design.
2.3
2021-06-29
• The max length of the data displayed on the time scale has been increased.
• Calibration file.
2.2.2
2020-12-13
• Selecting the range (start frequency) of the logarithmic scale.
• Bug fixes.
2.2.1
2020-11-22
• The zoom algorithm for the all data scale and time scale has been changed.
• Bug fixes.
2.2
2020-11-01
• Exponential spectrum averaging.
• Automatic stop by timer.
• Access to saved files through the iOS Files app.
2.1.1
2020-10-06
• Bug fixed in the zoom of the linear scale.
2.1
2020-08-21
• 1/n-octave smoothing for a logarithmic scale.
• For the linear scale, the algorithm for selecting the frequency range was changed.
• The name of the audio input.
• Export of all the recent raw data.
• Save of all the data.
2.0
2020-06-08
• Collecting recent data (last minute).
• Moving over all collected data. The amplitude of the waveform can be changed in the sound wave mode.
• Changed the direction of calculating the ordinal number of points on the time scale (sound wave mode).
1.4.1
2020-05-31
• Minor changes.
1.4
2020-05-24
• Buttons for quick loading and comparing saved files.
• Values of any point for logarithmic scale.
1.3.1
2020-05-11
• Minor changes.
1.3
2020-04-24
• List of frequency peaks. If several peaks have a common base, then they are considered as one peak. The minimum height of the peak for octave bands is 2 dB.
• Interpolation of frequencies in the list of peaks. To interpolate the frequency of the peak, select the Gaussian window (the accuracy of determining the frequency can increase by 10-100 times). 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). The number of bins used for calculation is written in brackets.
• Added windows (Gaussian window and Flat top window). Removed the sine window (please let me know if you need this option).
• Automatic stop in the spectrum mode. Now you can stop data collection when the start of the fading signal reaches the end of the FFT buffer. The beginning of the signal is not calculated accurately (just like with an automatic stop in the sound wave mode).
• A more detailed zoom level for the sound wave (time scale).
• Bug fixes.
1.2
2020-02-06
• Saving the measurement results in the application.
• Dark theme
• And other small features.
1.1
2018-09-06
• FFT size: 2048, 4096, 8192, 32768, 65536, 131072.
• Logarithmic frequency scale.
• Octave bands (1/1, 1/3, 1/6, 1/12).
• Window functions.
• A- and C-Weightings.
• Peak hold.
• Values of any point.
• Test wave.