(To be removed) Convert line spectral pairs to linear prediction coefficients
dsp.LSPToLPC will be removed in a future release. For more
information, see Compatibility Considerations.
The LSPToLPC object converts line spectral pairs to
linear prediction coefficients.
To convert LSP to LPC:
Define and set up your LSP to LPC converter. See Construction.
Call step to convert LSP according to the
properties of dsp.LSPToLPC. The behavior of
step is specific to each object in the
toolbox.
Starting in R2016b, instead of using the step
method to perform the operation defined by the System
object™, you can call the object with arguments, as if it were a function. For
example, y = step(obj,x) and y = obj(x)
perform equivalent operations.
H = dsp.LSPToLPC returns an LSP to LPC System
object, H, which converts line spectral pairs
(LSPs) to linear prediction coefficients (LPCs).
| step | Convert input line spectral pairs to linear prediction coefficients |
| Common to All System Objects | |
|---|---|
release | Allow System object property value changes |
Note: This example runs only in
R2016b or later. If you are using an earlier release, replace each call to the
function with the equivalent step syntax. For example,
myObject(x) becomes step(myObject,x).
Convert line spectral pairs to linear prediction coefficients.
ylsp = [0.7080 0.0103 -0.3021 -0.3218 -0.7093]'; lsp2lpc = dsp.LSPToLPC; ylpc = lsp2lpc(ylsp)
ylpc = 6×1
1.0000
0.6149
0.9898
-0.0000
0.0030
-0.0081
This object implements the algorithm, inputs, and outputs described on the LSF/LSP to LPC Conversion block reference page. The object properties correspond to the block parameters, except:
| No object property corresponds to the Input block parameter. The object converts LSP in the range (–1, 1) to LPC. |