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#ifndef __EST_MISC_SIGPR_H__
#define __EST_MISC_SIGPR_H__

/** Some generally useful things.
  * 
  * @author Richard Caley <rjc@cstr.ed.ac.uk>
  * @version $Id: EST_misc_sigpr.h,v 1.2 2001/04/04 13:11:27 awb Exp $
  */

#include <speech_tools/EST_Wave.h>

/**@name Miscellaneous Signal Processing Functions.
  * 
  * Some Functions which deon't fit elsewhere.
  */
//@{

/**@name Preemphasis
  *
  * Used in LPC analysis and spectrogram creation.
  * These two functions are inverses of one another.
  */
//@{

/// Pre process to emphasise higher frequencies
void EST_pre_emphasis(EST_Wave &signal, EST_Wave &psignal, float a);
/// Post process to get the original back (eg after resynthesis).
void EST_post_deemphasis(EST_Wave &signal, EST_Wave &dsignal, float a);
//@}

//@}

#endif

