jamie@264: 
jamie@264: #include "xttest_util.hpp"
jamie@264: 
jamie@264: #include "xtract/xtract_scalar.h"
jamie@264: 
jamie@264: #include "catch.hpp"
jamie@264: 
jamie@264: 
jamie@264: SCENARIO( "F0 is correctly detected for a clean sine wave", "[xtract_f0]" )
jamie@264: {
jamie@264:     GIVEN( "a 1024 sample block with a sample rate of 44100" )
jamie@264:     {
jamie@264:         uint32_t blocksize      = 1024;
jamie@264:         double samplerate       = 44100;
jamie@264:         double result           = 0.0;
jamie@264:         double table[blocksize];
jamie@264: 
jamie@264:         WHEN( "the frequency is 344.53125 Hz" ) // This will give a period of exactly 128 samples: 8 cycles in the block
jamie@264:         {
jamie@264:             double frequency = 344.53125;
jamie@264:             double min       = frequency * 0.995;
jamie@264:             double max       = frequency * 1.005;
jamie@264: 
jamie@264:             WHEN( "the amplitude is 1.0" )
jamie@264:             {
jamie@264:                 double amplitude = 1.0;
jamie@264: 
jamie@264:                 xttest_gen_sine(table, blocksize, samplerate, frequency, amplitude);
jamie@264:                 xtract_f0(table, blocksize, &samplerate, &result);
jamie@264:                 CAPTURE( result );
jamie@264: 
jamie@264:                 THEN( "the detected F0 is in the range 344.53125 ± 0.5%" )
jamie@264:                 {
jamie@264:                     REQUIRE(result < max); 
jamie@264:                     REQUIRE(result > min);
jamie@264:                 }
jamie@264:             }
jamie@264:             WHEN( "the amplitude is 0.1" )
jamie@264:             {
jamie@264:                 double amplitude = 0.1;
jamie@264: 
jamie@264:                 xttest_gen_sine(table, blocksize, samplerate, frequency, amplitude);
jamie@264:                 xtract_f0(table, blocksize, &samplerate, &result);
jamie@264:                 CAPTURE( result );
jamie@264: 
jamie@264:                 THEN( "the detected F0 is in the range 344.53125 ± 0.5%" )
jamie@264:                 {
jamie@264:                     REQUIRE(result < max); 
jamie@264:                     REQUIRE(result > min);
jamie@264:                 }
jamie@264:             }
jamie@264:         }
jamie@264:     }
jamie@264: }