message: AudioCalcEnvelope: oops.  close the #ifndef
diff: @@ -118,3 +118,5 @@ class AudioCalcEnvelope_F32 : public AudioStream_F32
  float32_t alfa, beta, one_minus_alfa; //time constants, but in terms of samples, not seconds
  float32_t state_ppk = 1.0f;
  };
  +
  +#endif
  