![]() Samples that lie close to 3.850 seconds are given more weight than samples further away. To compute the spectrum at, say, 3.850 seconds, Window shape the shape of the analysis window. The standard value), then values below -20 dB/Hz will be drawn in white, and valuesīetween -20 dB/Hz and 30 dB/Hz will be drawn in various shades of grey. In the spectrogram has a height of 30 dB/Hz, and the dynamic range is 50 dB (which is Values in-between have appropriate shades of grey. Dynamic range (dB) All values that are more than Dynamic range dB below the maximum will be drawn ![]() Spectrogram (bandwidth 43 Hz), set it to 30 ms (0.03 seconds). (bandwidth 260 Hz), keep the standard window length of 5 ms to get a `narrow-band' For a Gaussian window, the -3 dB bandwidth is 2*sqrt(6*ln(2))/(π* Window the width of the horizontal line in the spectrogram of a pure sine wave The window length determines the bandwidth of the spectralĪnalysis, i.e. Uses for each frame the part of the sound that lies between 0.0025 seconds before andĠ.0025 seconds after the centre of that frame (for Gaussian windows, Praat actually usesĪ bit more than that). If this is 0.005 seconds (the standard), Praat Window length the duration of the analysis window. You can see this if you record a Sound atĤ4100 Hz and set the view range from 0 Hz to 25000 Hz. The higher frequencies will be drawn in white. ![]() (which is half its sampling frequency), some values in the spectrogram will be zero, and If this maximum frequency is higher than the Nyquist frequency of the Sound The standard is 0 Hz at the bottom and 5000 HzĪt the top. Adapted from Max Frequency (Hz) the range of frequencies to display. ![]()
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