/* FreqSpec.h          -*- objc -*- */
#ifndef	ELC_FREQSPEC_H
#define	ELC_FREQSPEC_H

#include	<Object.h>
#include	"drfftw.h"

@interface	FreqSpec : Object
{
  size_t	N, n_spectra;
  rfftw_plan	plan;
  fftw_real	*spectrum, *in, *out;
  BOOL		use_hanning;
  BOOL		normalize;
  float		normalize_scale;
}

+ newWithN: (size_t) N;
- (void)N: (size_t) n;
- analyze;			// called internally
- shortAnalyze: (short *) samples;
- intAnalyze: (int *) samples;
- (BOOL) freqs: (fftw_real *) frequencies
  withBaseFreq: (fftw_real) freq_spacing
     intoBands: (fftw_real *) bands;
- destroy;
- use_hanning: (BOOL) yesno;

@end

#endif