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67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
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/*************************** Fraunhofer IIS FDK Tools ***********************
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(C) Copyright Fraunhofer IIS (2006)
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All Rights Reserved
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Please be advised that this software and/or program delivery is
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Confidential Information of Fraunhofer and subject to and covered by the
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Fraunhofer IIS Software Evaluation Agreement
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between Google Inc. and Fraunhofer
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effective and in full force since March 1, 2012.
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You may use this software and/or program only under the terms and
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conditions described in the above mentioned Fraunhofer IIS Software
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Evaluation Agreement. Any other and/or further use requires a separate agreement.
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$Id$
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Author(s): M. Lohwasser
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Description: fixed point abs definitions
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This software and/or program is protected by copyright law and international
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treaties. Any reproduction or distribution of this software and/or program,
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or any portion of it, may result in severe civil and criminal penalties, and
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will be prosecuted to the maximum extent possible under law.
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******************************************************************************/
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#ifndef _AUTOCORR_2ND_H
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#define _AUTOCORR_2ND_H
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#include "common_fix.h"
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typedef struct {
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FIXP_DBL r00r;
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FIXP_DBL r11r;
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FIXP_DBL r22r;
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FIXP_DBL r01r;
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FIXP_DBL r02r;
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FIXP_DBL r12r;
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FIXP_DBL r01i;
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FIXP_DBL r02i;
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FIXP_DBL r12i;
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FIXP_DBL det;
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int det_scale;
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} ACORR_COEFS;
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#define LPC_ORDER 2
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INT
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autoCorr2nd_real (ACORR_COEFS *ac, /*!< Pointer to autocorrelation coeffs */
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const FIXP_DBL *reBuffer, /*!< Pointer to to real part of spectrum */
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const int len /*!< Number of qmf slots */
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);
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INT
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autoCorr2nd_cplx (ACORR_COEFS *ac, /*!< Pointer to autocorrelation coeffs */
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const FIXP_DBL *reBuffer, /*!< Pointer to to real part of spectrum */
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const FIXP_DBL *imBuffer, /*!< Pointer to imag part of spectrum */
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const int len /*!< Number of qmf slots */
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);
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#endif /* _AUTOCORR_2ND_H */
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