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diff --git a/libAACenc/src/psy_configuration.h b/libAACenc/src/psy_configuration.h
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+/******************************** MPEG Audio Encoder **************************
+
+                     (C) Copyright Fraunhofer IIS (1999)
+                               All Rights Reserved
+
+    Please be advised that this software and/or program delivery is
+    Confidential Information of Fraunhofer and subject to and covered by the
+
+    Fraunhofer IIS Software Evaluation Agreement
+    between Google Inc. and  Fraunhofer
+    effective and in full force since March 1, 2012.
+
+    You may use this software and/or program only under the terms and
+    conditions described in the above mentioned Fraunhofer IIS Software
+    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+
+
+   This software and/or program is protected by copyright law and international
+   treaties. Any reproduction or distribution of this software and/or program,
+   or any portion of it, may result in severe civil and criminal penalties, and
+   will be prosecuted to the maximum extent possible under law.
+
+   $Id$
+   Initial author:       M.Werner
+   contents/description: Psychoaccoustic configuration
+
+******************************************************************************/
+#ifndef _PSY_CONFIGURATION_H
+#define _PSY_CONFIGURATION_H
+
+
+#include "aacenc.h"
+#include "common_fix.h"
+
+#include "psy_const.h"
+#include "aacenc_tns.h"
+#include "aacenc_pns.h"
+
+#define THR_SHIFTBITS         4
+#define PCM_QUANT_THR_SCALE  16
+
+#define C_RATIO (FIXP_DBL)0x02940a10 /* FL2FXCONST_DBL(0.001258925f) << THR_SHIFTBITS; */ /* pow(10.0f, -(29.0f/10.0f)) */
+
+typedef struct{
+
+  INT sfbCnt;                               /* number of existing sf bands */
+  INT sfbActive;                            /* number of sf bands containing energy after lowpass */
+  INT sfbActiveLFE;
+  INT sfbOffset[MAX_SFB+1];
+
+  INT       filterbank;                     /* LC, LD or ELD */
+
+  FIXP_DBL  sfbPcmQuantThreshold[MAX_SFB];
+
+  INT       maxAllowedIncreaseFactor;          /* preecho control */
+  FIXP_SGL  minRemainingThresholdFactor;
+
+  INT       lowpassLine;
+  INT       lowpassLineLFE;
+  FIXP_DBL  clipEnergy;                        /* for level dependend tmn */
+
+  FIXP_DBL  sfbMaskLowFactor[MAX_SFB];
+  FIXP_DBL  sfbMaskHighFactor[MAX_SFB];
+
+  FIXP_DBL  sfbMaskLowFactorSprEn[MAX_SFB];
+  FIXP_DBL  sfbMaskHighFactorSprEn[MAX_SFB];
+
+  FIXP_DBL  sfbMinSnrLdData[MAX_SFB];                /* minimum snr (formerly known as bmax) */
+
+  TNS_CONFIG tnsConf;
+  PNS_CONFIG pnsConf;
+
+  INT        granuleLength;
+  INT        allowIS;
+
+}PSY_CONFIGURATION;
+
+
+typedef struct{
+    UCHAR sfbCnt;                     /* Number of scalefactor bands */
+    UCHAR sfbWidth[MAX_SFB_LONG];     /* Width of scalefactor bands for long blocks */
+}SFB_PARAM_LONG;
+
+typedef struct{
+    UCHAR sfbCnt;                     /* Number of scalefactor bands */
+    UCHAR sfbWidth[MAX_SFB_SHORT];    /* Width of scalefactor bands for short blocks */
+}SFB_PARAM_SHORT;
+
+
+AAC_ENCODER_ERROR FDKaacEnc_InitPsyConfiguration(INT  bitrate,
+                                                 INT  samplerate,
+                                                 INT  bandwidth,
+                                                 INT  blocktype,
+                                                 INT  granuleLength,
+                                                 INT  useIS,
+                                                 PSY_CONFIGURATION *psyConf,
+                                                 FB_TYPE filterbank);
+
+#endif /* _PSY_CONFIGURATION_H */
+
+
+