I am new to signal processing and I am reading about 1D phase unwrapping Here is the paper that I am reading

https://www.ljmu.ac.uk/~/media/files/ljmu/about-us/faculties-and-schools/fet/geri/onedimensionalphaseunwrapping_finalpdf.pdf

It refers to x as the signal but then it shows in the graph the axis are origina phase in radians againts sample index. So is x the signal or the phase function? Also it says that signal x whose amplitude exceeds the range [-π,π]. All the above are for figures 1. I am asking that, because I am confused on wether we compare phases or amplitudes. So is x the phase of a function like sin(x)? I think whis sums up my question (page 1 of pdf) I hope i didnt confuse anyone.

I am new to signal processing and I am reading about 1D phase unwrapping Here is the paper that I am reading.

It refers to x as the signal but then it shows in the graph the axis are origina phase in radians againts sample index. So is x the signal or the phase function? Also it says that signal x whose amplitude exceeds the range [-π,π]. All the above are for figures 1. I am asking that, because I am confused on wether we compare phases or amplitudes. So is x the phase of a function like sin(x)? I think whis sums up my question (page 1 of pdf) I hope i didnt confuse anyone.

I am new to signal processing and I am reading about 1D phase unwrapping Here is the paper that I am reading

https://www.ljmu.ac.uk/~/media/files/ljmu/about-us/faculties-and-schools/fet/geri/onedimensionalphaseunwrapping_finalpdf.pdf

It refers to x as the signal but then it shows in the graph the axis are origina phase in radians againts sample index. So is x the signal or the phase function? Also it says that signal x whose amplitude exceeds the range [-π,π]. All the above are for figures 1. I am asking that, because I am confused on wether we compare phases or amplitudes. I hope i didnt confuse anyone.

I am new to signal processing and I am reading about 1D phase unwrapping Here is the paper that I am reading

https://www.ljmu.ac.uk/~/media/files/ljmu/about-us/faculties-and-schools/fet/geri/onedimensionalphaseunwrapping_finalpdf.pdf

It refers to x as the signal but then it shows in the graph the axis are origina phase in radians againts sample index. So is x the signal or the phase function? Also it says that signal x whose amplitude exceeds the range [-π,π]. All the above are for figures 1. I am asking that, because I am confused on wether we compare phases or amplitudes. So is x the phase of a function like sin(x)? I think whis sums up my question (page 1 of pdf) I hope i didnt confuse anyone.