Corrected comments, no code change

AudioFilterBiquad_F32.h

@@ -1,5 +1,5 @@
 /*
- * AudioFilterBiquad_F32.cpp
+ * AudioFilterBiquad_F32.h
  * Chip Audette, OpenAudio, Apr 2017
  * MIT License,  Use at your own risk.
  *
@@ -104,7 +104,7 @@ class AudioFilterBiquad_F32 : public AudioStream_F32
     // setting of coefficients to catch the max number of stages and do the
     // double to float conversion for the CMSIS routine.
     void begin(void) {
-        // Initialize FIR instance (ARM DSP Math Library)
+        // Initialize BiQuad instance (ARM DSP Math Library)
         //https://www.keil.com/pack/doc/CMSIS/DSP/html/group__BiquadCascadeDF1.html
         arm_biquad_cascade_df1_init_f32(&iir_inst, numStagesUsed, &coeff32[0],  &StateF32[0]);
         }