kfr

Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON)
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units.cpp (2123B)

      1 /**
      2  * KFR (https://www.kfrlib.com)
      3  * Copyright (C) 2016-2023 Dan Cazarin
      4  * See LICENSE.txt for details
      5  */
      6 
      7 #include <kfr/dsp/units.hpp>
      8 
      9 namespace kfr
     10 {
     11 inline namespace CMT_ARCH_NAME
     12 {
     13 
     14 TEST(note_to_hertz)
     15 {
     16     testo::epsilon_scope<void> eps(2000);
     17     CHECK(kfr::note_to_hertz(60) == fbase(261.6255653005986346778499935233));
     18     CHECK(kfr::note_to_hertz(pack(60)) == pack(fbase(261.6255653005986346778499935233)));
     19 
     20     CHECK(kfr::note_to_hertz(69) == fbase(440.0));
     21     CHECK(kfr::note_to_hertz(pack(69)) == pack(fbase(440)));
     22 }
     23 
     24 TEST(hertz_to_note)
     25 {
     26     testo::epsilon_scope<void> eps(1000);
     27     CHECK(kfr::hertz_to_note(261.6255653005986346778499935233) == fbase(60));
     28     CHECK(kfr::hertz_to_note(pack(261.6255653005986346778499935233)) == pack(fbase(60)));
     29 
     30     CHECK(kfr::hertz_to_note(440) == fbase(69));
     31     CHECK(kfr::hertz_to_note(pack(440)) == pack(fbase(69)));
     32 }
     33 
     34 TEST(amp_to_dB)
     35 {
     36     testo::epsilon_scope<void> eps(1000);
     37 
     38     CHECK(kfr::amp_to_dB(fbase(2.0)) == fbase(6.0205999132796239042747778944899));
     39     CHECK(kfr::amp_to_dB(fbase(-2.0)) == fbase(6.0205999132796239042747778944899));
     40     CHECK(kfr::amp_to_dB(fbase(1.0)) == fbase(0));
     41     CHECK(kfr::amp_to_dB(fbase(-1.0)) == fbase(0));
     42     CHECK(kfr::amp_to_dB(fbase(0.5)) == fbase(-6.0205999132796239042747778944899));
     43     CHECK(kfr::amp_to_dB(fbase(-0.5)) == fbase(-6.0205999132796239042747778944899));
     44     CHECK(kfr::amp_to_dB(fbase(0.0)) == fbase(-HUGE_VAL));
     45 }
     46 
     47 TEST(dB_to_amp)
     48 {
     49 #if defined __clang__ && defined(CMT_ARCH_ARM) && __clang_major__ >= 13
     50     // Clang 13+ compiler bug on ARM
     51 #else
     52     testo::epsilon_scope<void> eps(1000);
     53 
     54     CHECK(kfr::exp(fbase(-HUGE_VAL)) == fbase(0.0));
     55     CHECK(kfr::exp2(fbase(-HUGE_VAL)) == fbase(0.0));
     56     CHECK(kfr::exp10(fbase(-HUGE_VAL)) == fbase(0.0));
     57 
     58     CHECK(kfr::dB_to_amp(fbase(-HUGE_VAL)) == fbase(0.0));
     59     CHECK(kfr::dB_to_amp(fbase(0.0)) == fbase(1.0));
     60     CHECK(kfr::dB_to_amp(fbase(6.0205999132796239042747778944899)) == fbase(2.0));
     61     CHECK(kfr::dB_to_amp(fbase(-6.0205999132796239042747778944899)) == fbase(0.5));
     62 #endif
     63 }
     64 
     65 } // namespace CMT_ARCH_NAME
     66 } // namespace kfr