Calculating azimuth and elevation angle basaed on delay time between microphones

[BratYanek]

Hello, I have a question.

how did you deal with the fact that a change in delay time, due only to a change in position in the z coordinate (the actual x and y coordinates of the sound source remain the same) does not affect the computed x and y coordinates needed to calculate the azimuth angle. I'm working on a similar project (of course on a much smaller scale) and I would like it to not affect the calculated azimuth angle if the actual elevation angle changes (thus changing the delay between microphones).

kind regards :)