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diff --git a/arm-fm-22k/lib_src/eas_chorusdata.h b/arm-fm-22k/lib_src/eas_chorusdata.h
deleted file mode 100644
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--- a/arm-fm-22k/lib_src/eas_chorusdata.h
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-/*----------------------------------------------------------------------------
- *
- * File: 
- * eas_chorusdata.h
- *
- * Contents and purpose:
- * Contains the prototypes for the Chorus effect.
- *
- *
- * Copyright Sonic Network Inc. 2006
-
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- *----------------------------------------------------------------------------
- * Revision Control:
- *   $Revision: 309 $
- *   $Date: 2006-09-12 18:52:45 -0700 (Tue, 12 Sep 2006) $
- *----------------------------------------------------------------------------
-*/
-
-#ifndef _EAS_CHORUS_H
-#define _EAS_CHORUS_H
-
-#include "eas_types.h"
-#include "eas_audioconst.h"
-
-//defines for chorus
-
-#define EAS_CHORUS_BYPASS_DEFAULT	1
-#define EAS_CHORUS_PRESET_DEFAULT	0
-#define EAS_CHORUS_RATE_DEFAULT		30
-#define EAS_CHORUS_DEPTH_DEFAULT	39
-#define EAS_CHORUS_LEVEL_DEFAULT	32767
-
-#define EAS_CHORUS_LEVEL_MIN		0
-#define EAS_CHORUS_LEVEL_MAX		32767
-
-#define EAS_CHORUS_RATE_MIN			10
-#define EAS_CHORUS_RATE_MAX			50
-
-#define EAS_CHORUS_DEPTH_MIN		15
-#define EAS_CHORUS_DEPTH_MAX		60
-
-#define CHORUS_SIZE_MS 20
-#define CHORUS_L_SIZE ((CHORUS_SIZE_MS*_OUTPUT_SAMPLE_RATE)/1000)
-#define CHORUS_R_SIZE CHORUS_L_SIZE
-#define CHORUS_SHAPE_SIZE 128
-#define CHORUS_DELAY_MS 10
-
-#define CHORUS_MAX_TYPE			4	// any Chorus numbers larger than this are invalid
-
-typedef struct
-{
-	EAS_I16				m_nRate;
-	EAS_I16				m_nDepth;
-	EAS_I16				m_nLevel;
-
-} S_CHORUS_PRESET;
-
-typedef struct
-{
-	S_CHORUS_PRESET		m_sPreset[CHORUS_MAX_TYPE];	//array of presets
-
-} S_CHORUS_PRESET_BANK;
-
-/* parameters for each Chorus */
-typedef struct
-{
-	EAS_I32 lfoLPhase;
-	EAS_I32 lfoRPhase;
-	EAS_I16 chorusIndexL;
-	EAS_I16 chorusIndexR;
-	EAS_U16 chorusTapPosition;
-
-	EAS_I16 m_nRate;
-	EAS_I16 m_nDepth;
-	EAS_I16 m_nLevel;
-
-	//delay lines used by the chorus, longer would sound better
-	EAS_PCM chorusDelayL[CHORUS_L_SIZE];
-	EAS_PCM chorusDelayR[CHORUS_R_SIZE];
-
-	EAS_BOOL	bypass;
-	EAS_I8		preset;
-
-	EAS_I16		m_nCurrentChorus;			// preset number for current Chorus
-	EAS_I16		m_nNextChorus;				// preset number for next Chorus
-
-	S_CHORUS_PRESET			pPreset;
-
-	S_CHORUS_PRESET_BANK	m_sPreset;
-
-} S_CHORUS_OBJECT;
-
-
-/*----------------------------------------------------------------------------
- * WeightedTap()
- *----------------------------------------------------------------------------
- * Purpose: Does fractional array look-up using linear interpolation
- * 
- * first convert indexDesired to actual desired index by taking into account indexReference
- * then do linear interpolation between two actual samples using fractional part
- *
- * Inputs: 
- * array: pointer to array of signed 16 bit values, typically either PCM data or control data
- * indexReference: the circular buffer relative offset
- * indexDesired: the fractional index we are looking up (16 bits index + 16 bits fraction)
- * indexLimit: the total size of the array, used to compute buffer wrap
- * 	
- * Outputs:
- * Value from the input array, linearly interpolated between two actual data values
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_I16 WeightedTap(const EAS_I16 *array, EAS_I16 indexReference, EAS_I32 indexDesired, EAS_I16 indexLimit);
-
-/*----------------------------------------------------------------------------
- * ChorusReadInPresets()
- *----------------------------------------------------------------------------
- * Purpose: sets global Chorus preset bank to defaults
- * 
- * Inputs: 
- *			
- * Outputs:
- *
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT ChorusReadInPresets(S_CHORUS_OBJECT *pChorusData);
-
-/*----------------------------------------------------------------------------
- * ChorusUpdate
- *----------------------------------------------------------------------------
- * Purpose: 
- * Update the Chorus preset parameters as required
- *
- * Inputs: 
- *
- * Outputs:
- * 
- * 
- * Side Effects:
- * - chorus paramters will be changed
- * - m_nCurrentChorus := m_nNextChorus
- *----------------------------------------------------------------------------
-*/
-static EAS_RESULT ChorusUpdate(S_CHORUS_OBJECT* pChorusData);
-
-#endif /* #ifndef _EAS_CHORUSDATA_H */
-
-