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A utility to write spectrum files from 16-bit integer soundfiles.

Written by Densil Cabrera, 
using Fourier code by Don Cross.

PLACE THE SOUNDFILE THAT YOU WISH TO ANALYSE IN THE SAME FOLDER AS THIS PROGRAM
S P E C T R A

      -18.2       -10.5       -11.7       -11.2       -17.7       -20.6       -22.3       -14.7        -7.7        -6.1        -5.6
 0dB| 
    | 
    | 
    | 
    | 
-5dB| 
    |                                                                                                            
    | 
    |                                                                                                 
    |                                                                                                                            
-10dB|                                                                                                                            
    |                                                                                        
    |                    ׋                                                                            ׀
    |                                                                                                    
    |                                                                                            ׀׀
-15dB|                                                                        ׀׀׀
    |                                                                            ׀׀׀׀
    |                                                                            ׀׀׀׀׀׀׀
    |                    ׀                                    ׀׀׀׀׀׀׀׀׀
    |    ׀׀                                        ׀    ׀׀׀׀׀׀׀׀
-20dB|                ׀׀                                        ׀    ׀׀׀׀׀
    |                ׀׀׀                        ׀    ׀׀׀׀
    |                ׀׀׀׀                                    ׀׀׀׀
    |                ׀׀׀׀׀                        ׀׀׀
    |                ׀׀׀׀׀׀                            ׀׀
-25dB|                ׀׀׀׀׀                    ׀׀
    |                ׀׀׀                ׀׀
    |                ׀׀׀            ׀׀
    |                ׀׀׀׀    ׀׀
    |                ׀׀׀׀׀׀
-30dB|                ׀׀׀׀׀
    |                ׀׀׀׀׀׀׀׀
    |                ׀׀׀׀׀׀׀׀׀׀
    |                ׀׀׀׀׀׀׀׀׀
    |                ׀׀׀׀׀׀׀
-35dB|                ׀׀׀׀׀׀
    |                ׀׀׀
    |                ׀
    |                ׀
    |                ׀
-40dB|                ׀
     ^^^^^^^^^^
           16         31.5         63         125         250         500         1000        2000        4000        8000
                                                 frequency (Hz)

          CURRENT SPECTRUMPHILE SETTINGS:                                          
  SUPERVISED INPUT                                                                 
  GENERATE STATIC SPECTRUM FILE                                                    
  1 CHANNEL                                                                        
  SAMPLE RATE =  44100 Hz                                                          
  WINDOW LENGTH =  16384 SAMPLES  (  0.3715 SECONDS,      2.7 Hz RESOLUTION).      
  DOWNSAMPLING FACTOR =    1                                                       
  HIGH FREQ LIMIT =   2756.2 Hz (  1024 SPECTRUM COMPONENTS)                       
  START TIME =      0.000 SECONDS.                                                 
  NUMBER OF WINDOWS =      1 (TOTAL DURATION =   0.3715 SECONDS).                  
  HANNING WINDOW FUNCTION                                                          

Type one of the following letters to change the settings or to proceed:
'S' to generate a dynamic spectrum file
'2' for 2-channel input soundfile.
'R' to correct the soundfile sample rate.
'L' to change the FFT window length.
'D' to change the downsampling factor.
'H' to change the high frequency limit of the output Fourier spectrum.
'T' to change the start time.
'N' to change the number of windows to be averaged.
'O' to change the FFT window offset.
'W' to change the FFT window function.
'P' to proceed.

p
Type the exact name of the soundfile: 14/1.exc W1 W10
Uncalibrated Level :     102.80 dB

     1/1 O C T A V E ,    1/3 - O C T A V E  A N D    1/12 - O C T A V E 
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