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diff --git a/DSP_Lib/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c b/DSP_Lib/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c
deleted file mode 100644
index 9989522..0000000
--- a/DSP_Lib/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*-----------------------------------------------------------------------------    
-* Copyright (C) 2010-2014 ARM Limited. All rights reserved.    
-*    
-* $Date:        19. March 2015
-* $Revision: 	V.1.4.5
-*    
-* Project: 	    CMSIS DSP Library    
-* Title:        arm_fir_interpolate_init_q15.c    
-*    
-* Description:  Q15 FIR interpolator initialization function    
-*    
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*  
-* Redistribution and use in source and binary forms, with or without 
-* modification, are permitted provided that the following conditions
-* are met:
-*   - Redistributions of source code must retain the above copyright
-*     notice, this list of conditions and the following disclaimer.
-*   - Redistributions in binary form must reproduce the above copyright
-*     notice, this list of conditions and the following disclaimer in
-*     the documentation and/or other materials provided with the 
-*     distribution.
-*   - Neither the name of ARM LIMITED nor the names of its contributors
-*     may be used to endorse or promote products derived from this
-*     software without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
-* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-* POSSIBILITY OF SUCH DAMAGE.  
-* ---------------------------------------------------------------------------*/
-
-#include "arm_math.h"
-
-/**    
- * @ingroup groupFilters    
- */
-
-/**    
- * @addtogroup FIR_Interpolate    
- * @{    
- */
-
-/**    
- * @brief  Initialization function for the Q15 FIR interpolator.    
- * @param[in,out] *S        points to an instance of the Q15 FIR interpolator structure.    
- * @param[in]     L         upsample factor.    
- * @param[in]     numTaps   number of filter coefficients in the filter.    
- * @param[in]     *pCoeffs  points to the filter coefficient buffer.    
- * @param[in]     *pState   points to the state buffer.    
- * @param[in]     blockSize number of input samples to process per call.    
- * @return        The function returns ARM_MATH_SUCCESS if initialization was successful or ARM_MATH_LENGTH_ERROR if    
- * the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.    
- *    
- * <b>Description:</b>    
- * \par    
- * <code>pCoeffs</code> points to the array of filter coefficients stored in time reversed order:    
- * <pre>    
- *    {b[numTaps-1], b[numTaps-2], b[numTaps-2], ..., b[1], b[0]}    
- * </pre>    
- * The length of the filter <code>numTaps</code> must be a multiple of the interpolation factor <code>L</code>.    
- * \par    
- * <code>pState</code> points to the array of state variables.    
- * <code>pState</code> is of length <code>(numTaps/L)+blockSize-1</code> words    
- * where <code>blockSize</code> is the number of input samples processed by each call to <code>arm_fir_interpolate_q15()</code>.    
- */
-
-arm_status arm_fir_interpolate_init_q15(
-  arm_fir_interpolate_instance_q15 * S,
-  uint8_t L,
-  uint16_t numTaps,
-  q15_t * pCoeffs,
-  q15_t * pState,
-  uint32_t blockSize)
-{
-  arm_status status;
-
-  /* The filter length must be a multiple of the interpolation factor */
-  if((numTaps % L) != 0u)
-  {
-    /* Set status as ARM_MATH_LENGTH_ERROR */
-    status = ARM_MATH_LENGTH_ERROR;
-  }
-  else
-  {
-
-    /* Assign coefficient pointer */
-    S->pCoeffs = pCoeffs;
-
-    /* Assign Interpolation factor */
-    S->L = L;
-
-    /* Assign polyPhaseLength */
-    S->phaseLength = numTaps / L;
-
-    /* Clear state buffer and size of buffer is always phaseLength + blockSize - 1 */
-    memset(pState, 0,
-           (blockSize + ((uint32_t) S->phaseLength - 1u)) * sizeof(q15_t));
-
-    /* Assign state pointer */
-    S->pState = pState;
-
-    status = ARM_MATH_SUCCESS;
-  }
-
-  return (status);
-
-}
-
- /**    
-  * @} end of FIR_Interpolate group    
-  */