User`s guide

Unwrap
5-476
Two Unwrap Modes
In both unwrap modes, the block adds to each input channel’s elements, where it updates k
at each phase discontinuity. (For more on the updating of k, see “Unwrap Method” on
page 5-479.) The number of times that k is reset to 0 depends on the unwrap mode.
Default Unwrap Mode:
Initialize
k to 0 For Only the First Input Frame
Nondefault Unwrap Mode:
Set k to 0 For Each Successive Input Matrix
or Input Vector
In this mode, k is initialized to 0 for only the
first input matrix or input vector. As k gets
updated, the value of k is retained between
successive input matrices or input vectors. That
is, the block unwraps each input’s channel by
considering phase discontinuities in all
previous frames and the current frame.
Depending on input characteristics, the block
unwraps the columns or each individual
element of the input:
•Frame-based inputs — unwrap columns
•Sample-based inputs — unwrap each element
of the input.
•1-D vector inputs — treat as frame-based
column
See the following diagrams.
In this mode, k is reset to 0 for each
successive input matrix or input vector. As k
gets updated, the value of k is only retained
within the current input matrix or vector.
That is, the block unwraps each input’s
channel by considering phase discontinuities
in the current input matrix or input vector
only, ignoring discontinuities in previous
inputs.
Depending on input characteristics, the block
unwraps the columns or rows of the input:
•Frame-based inputs — unwrap columns
•Sample-based nonrow inputs — unwrap
columns
•Sample-based row vector inputs — unwrap
the row.
•1-D vector inputs — treat as frame-based
column
See the following diagrams.
2πk