I have been trying to reproduce this paper¹. Few things which are unclear to me. The paper talks about finding whether a given Room Impulse Response(RIR) is invertible or not based on Nyquist plot.
- How can we plot the Nyquist plot from an RIR(using python/other opensource tools)?
- I understand a Z transform as having both poles and zeroes, but how do we interpret an RIR in Z plane?
- How do they do inverse filtering as mentioned in the paper(convolving with inverse impulse response)?
- How to interpret Nyquist plot of RIR in terms of its invertibility?
¹ Stephen T. Neely and J. B. Allen: Invertibility of a room impulse response in: The Journal of the Acoustical Society of America 66, 165 (1979)