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Diffstat (limited to 'src/components/heartrate/Biquad.h')
-rw-r--r-- | src/components/heartrate/Biquad.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/components/heartrate/Biquad.h b/src/components/heartrate/Biquad.h new file mode 100644 index 00000000..dc9b97f6 --- /dev/null +++ b/src/components/heartrate/Biquad.h @@ -0,0 +1,22 @@ +#pragma once + +namespace Pinetime { + namespace Controllers { + /// Direct Form II Biquad Filter + class Biquad { + public: + Biquad(float b0, float b1, float b2, float a1, float a2); + float Step(float x); + + private: + float b0; + float b1; + float b2; + float a1; + float a2; + + float v1 = 0.0f; + float v2 = 0.0f; + }; + } +} |