Aditya Viswanathan

collaborators

2 papers

math.NA2021

Phase Retrieval for $L^{2} ([- π, π])$ via the Provably Accurate and Noise Robust Numerical Inversion of Spectrogram Measurements

Mark Iwen, Michael Perlmutter, Nada Sissouno +1

In this paper, we focus on the approximation of smooth functions $f : [- π, π] \to C$ , up to an unresolvable global phase ambiguity, from a finite set of Short Time…

math.NA2019

Inverting Spectrogram Measurements via Aliased Wigner Distribution Deconvolution and Angular Synchronization

Michael Perlmutter, Sami Merhi, Aditya Viswanathan +1

We propose a two-step approach for reconstructing a signal $x \in C^{d}$ from subsampled short-time Fourier transform magnitude (spectogram) measurements: First, we use…

Phase Retrieval for L2([−π,π]) via the Provably Accurate and Noise Robust Numerical Inversion of Spectrogram Measurements

Inverting Spectrogram Measurements via Aliased Wigner Distribution Deconvolution and Angular Synchronization

Phase Retrieval for $L^{2} ([- π, π])$ via the Provably Accurate and Noise Robust Numerical Inversion of Spectrogram Measurements