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EST_misc_sigpr.h
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33 
34 
35 #ifndef __EST_MISC_SIGPR_H__
36 #define __EST_MISC_SIGPR_H__
37 
38 /** Some generally useful things.
39  *
40  * @author Richard Caley <rjc@cstr.ed.ac.uk>
41  * @version $Id: EST_misc_sigpr.h,v 1.2 2001/04/04 13:11:27 awb Exp $
42  */
43 
44 #include "EST_Wave.h"
45 
46 /**@name Miscellaneous Signal Processing Functions.
47  *
48  * Some Functions which deon't fit elsewhere.
49  */
50 //@{
51 
52 /**@name Preemphasis
53  *
54  * Used in LPC analysis and spectrogram creation.
55  * These two functions are inverses of one another.
56  */
57 //@{
58 
59 /// Pre process to emphasise higher frequencies
60 void EST_pre_emphasis(EST_Wave &signal, EST_Wave &psignal, float a);
61 /// Post process to get the original back (eg after resynthesis).
62 void EST_post_deemphasis(EST_Wave &signal, EST_Wave &dsignal, float a);
63 //@}
64 
65 //@}
66 
67 #endif
68