Unwrap
Removes the phase gap in the signal.
blockType: Unwrap
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Path in the library: |
Description
Block Unwrap restores each channel of the input signal by adding or subtracting a multiple of , to each element of the channel. The block recognizes phase gaps that exceed the value of the parameter. Tolerance(radians).
Ports
Input
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IN_1
—
Input signal
scalar | vector | the matrix
Details
Input signal for recovery. The phase of the input signal should be expressed in radians.
| Data types |
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| Complex numbers support |
I don’t |
Output
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OUT_1
—
Output signal
scalar | vector | the matrix
Details
The restored signal.
The unit stores the size and dimension of the input signal, and the sampling rate of the output signal is equal to the sampling rate of the input.
| Data types |
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| Complex numbers support |
I don’t |
Parameters
Main
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Tolerance(radians) —
gap size
Real number
Details
The size of the gap that the block recognizes as a true phase gap. By default the value is set to , and not less, in order to avoid changing the natural characteristics of the signal.
To increase the sensitivity of the block, set the parameter Tolerance(radians) the value is slightly smaller .
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
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Input processing —
input signal processing method
Elements as channels (sample based) | Columns as channels (frame based)
Details
Specify the input signal processing method:
-
Columns as channels (frame based)— when this value is selected, the unit processes each column of the input signal as a separate channel; -
Elements as channels (sample based)— when this value is selected, the unit processes each element of the input signal as a separate channel.
| Values |
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| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
No |
#
Reset initial phase to zero for each input frame —
checking consecutive frames
Logical
Details
When this check box is unchecked, the block ignores the boundaries between frames of the input signal and does not reset the initial phase value to zero with each new input signal. In this mode, the unit continuously expands the data in each column of the input signal.
The figure below shows how the block expands the data when this checkbox is unchecked.
When this check box is checked, the block processes each frame of input data independently and resets the initial phase value for each new frame.
The figure below shows how the block expands the data when this check box is selected.
Dependencies
To use this parameter, set for the parameter Input processing value Columns as channels (frame based). In the sampling processing mode, the block does not reset the initial phase value to zero for each new input.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |