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Processing
Analysis
LPC_AutoCorrelation.hxx
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/*
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* Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
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* UNIVERSITAT POMPEU FABRA
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __LPC_AUTOCORRELATION__
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#define __LPC_AUTOCORRELATION__
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#include "
Processing.hxx
"
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#include "
InPort.hxx
"
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#include "
OutPort.hxx
"
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#include "
ProcessingConfig.hxx
"
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#include "
LPModel.hxx
"
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#include "
Spectrum.hxx
"
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namespace
CLAM
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{
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class
Audio;
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template
<
class
T >
class
Array;
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class
LPCConfig
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:
public
ProcessingConfig
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{
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public
:
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DYNAMIC_TYPE_USING_INTERFACE
(
LPCConfig
, 1,
ProcessingConfig
);
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DYN_ATTRIBUTE
( 0,
public
,
unsigned
, Order );
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protected
:
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void
DefaultInit
();
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};
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class
LPC_AutoCorrelation
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:
public
Processing
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{
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public
:
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LPC_AutoCorrelation
();
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virtual
~LPC_AutoCorrelation
();
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const
char
*
GetClassName
()
const
;
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const
ProcessingConfig
&
GetConfig
()
const
;
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bool
Do
();
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bool
Do
(
const
Audio
& in,
LPModel
& out );
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bool
Do
(
const
Audio
& in,
DataArray
& A,
DataArray
& K,
TData
& E );
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protected
:
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InPort<Audio>
mAudioIn
;
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OutPort<LPModel>
mLPModelOut
;
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OutPort<Spectrum>
mSpectrumOut
;
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LPCConfig
mCurrentConfig
;
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bool
ConcreteConfigure
(
const
ProcessingConfig
& cfg );
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void
ComputeAutocorrelation
(
const
Array<TData>
& signal,
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Array<TData>
& acCoeffs );
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void
SolveSystemByLevinsonDurbin
(
const
Array<TData>
& R,
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Array<TData>
& A,
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Array<TData>
& K,
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TData
& E);
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private
:
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};
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// inlines
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inline
const
char
*
LPC_AutoCorrelation::GetClassName
()
const
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{
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return
"LPC_AutoCorrelation"
;
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}
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inline
const
ProcessingConfig
&
LPC_AutoCorrelation::GetConfig
()
const
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{
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return
mCurrentConfig
;
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}
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}
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#endif // LPC_AutoCorrelation.hxx
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