![I'm learning Short-Time Fourier Transform and i can't understand what i capital K meaning in this Hann window formula. Can somebody explain me what is this? (small "k" is samples) : r/DSP I'm learning Short-Time Fourier Transform and i can't understand what i capital K meaning in this Hann window formula. Can somebody explain me what is this? (small "k" is samples) : r/DSP](https://i.redd.it/7jrmf5o4k1291.jpg)
I'm learning Short-Time Fourier Transform and i can't understand what i capital K meaning in this Hann window formula. Can somebody explain me what is this? (small "k" is samples) : r/DSP
![overlap add - How to calculate short-time fourier transform (STFT) when the window length is greater or smaller than the FFT size? - Signal Processing Stack Exchange overlap add - How to calculate short-time fourier transform (STFT) when the window length is greater or smaller than the FFT size? - Signal Processing Stack Exchange](https://i.stack.imgur.com/MJmYT.png)
overlap add - How to calculate short-time fourier transform (STFT) when the window length is greater or smaller than the FFT size? - Signal Processing Stack Exchange
Gabriel Peyré on Twitter: "The spectrogram (aka short time Fourier transform) reveals the geometry of sounds. Evolving harmonics of a birds singing become smooth curves. Sounds are intrinsically (at least) 2-D (time -frequency).
![Table 1 from Adaptive Short Time Fourier Transform (STFT) Analysis of seismic electric signal (SES): A comparison of Hamming and rectangular window | Semantic Scholar Table 1 from Adaptive Short Time Fourier Transform (STFT) Analysis of seismic electric signal (SES): A comparison of Hamming and rectangular window | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/06147eec721d2d6d63a7ad289e080bd25b8ab087/3-Table1-1.png)
Table 1 from Adaptive Short Time Fourier Transform (STFT) Analysis of seismic electric signal (SES): A comparison of Hamming and rectangular window | Semantic Scholar
![Launch Window Soon, almost There, in Short Time - a Clock Symbolizes a Reminder that Launch Window is Near, Will Happen and Finish Stock Illustration - Illustration of phrase, english: 164305308 Launch Window Soon, almost There, in Short Time - a Clock Symbolizes a Reminder that Launch Window is Near, Will Happen and Finish Stock Illustration - Illustration of phrase, english: 164305308](https://thumbs.dreamstime.com/z/launch-window-soon-there-short-time-clock-symbolizes-reminder-near-will-happen-finish-quickly-little-164305308.jpg)
Launch Window Soon, almost There, in Short Time - a Clock Symbolizes a Reminder that Launch Window is Near, Will Happen and Finish Stock Illustration - Illustration of phrase, english: 164305308
![Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD): Implementation - SoftwareX Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD): Implementation - SoftwareX](https://www.softxjournal.com/cms/attachment/25154d3c-5f8a-4c5a-81ad-e745e3bfce3d/gr1.jpg)
Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD): Implementation - SoftwareX
![Spectrogram from short time Fourier transform of the Surface-Mounted... | Download Scientific Diagram Spectrogram from short time Fourier transform of the Surface-Mounted... | Download Scientific Diagram](https://www.researchgate.net/publication/324753513/figure/fig2/AS:619305691533321@1524665391864/Spectrogram-from-short-time-Fourier-transform-of-the-Surface-Mounted-Device-SMD-machine.png)