"Fundamental discretization barriers in STFT phase retrieval"Liehr, LukasWe discuss recent results on sampled STFT phase retrieval. The main theorems state that a square-integrable function is not determined up to a global phase from lattice samples of its spectrogram, no matter how the window function is chosen and no matter how dense the lattice is chosen. This reveals a stark contrast to classical results in time-frequency analysis where phase information is present. |
| http://univie.ac.at/projektservice-mathematik/e/talks/ICCHA2022_Liehr_2022-05_abstractGrohsAndLiehr.pdf |
« back