Corrected comments, only

analyze_fft4096_iq_F32.cpp

@@ -70,7 +70,7 @@ static void apply_window_to_fft_buffer1(void *fft_buffer, const void *window) {
 void AudioAnalyzeFFT4096_IQ_F32::update(void)  {
   audio_block_f32_t *block_i,*block_q;
   int ii;
-
+  // uint32_t tt = micros();   // timing
   block_i = receiveReadOnly_f32(0);
   if (!block_i) return;
   block_q = receiveReadOnly_f32(1);
@@ -79,7 +79,6 @@ void AudioAnalyzeFFT4096_IQ_F32::update(void)  {
      return;
      }
   // Here with two new blocks of data
-
   switch (state) {
   case 0:
       blocklist_i[0] = block_i;  blocklist_q[0] = block_q;
@@ -283,7 +282,7 @@ void AudioAnalyzeFFT4096_IQ_F32::update(void)  {
   case 31:
       blocklist_i[31] = block_i;  blocklist_q[31] = block_q;
 
-      // This state==31 takes about 500 uSec, including the FFT.  
+      // This state==31 takes about 500 uSec, including the FFT.
       copy_to_fft_buffer1(fft_buffer+0x000, blocklist_i[0]->data, blocklist_q[0]->data);
       copy_to_fft_buffer1(fft_buffer+0x100, blocklist_i[1]->data, blocklist_q[1]->data);
       copy_to_fft_buffer1(fft_buffer+0x200, blocklist_i[2]->data, blocklist_q[2]->data);
@@ -378,5 +377,6 @@ void AudioAnalyzeFFT4096_IQ_F32::update(void)  {
        state = 16;
        break;       // From case 31
     }  // End of switch & case 31
+    // Serial.println(micros() - tt);
   }  // End update()
 #endif

analyze_fft4096_iq_F32.h

@@ -73,11 +73,13 @@
  *   If xAxis=0  f=fs/2 in middle, f=0 on right edge
  *   If xAxis=1  f=fs/2 in middle, f=0 on left edge
  *   If xAxis=2  f=fs/2 on left edge, f=0 in middle
- *   If xAxis=3  f=fs/2 on right edgr, f=0 in middle
+ *   If xAxis=3  f=fs/2 on right edge, f=0 in middle
  * If there is 180 degree phase shift to I or Q these all get reversed.
  *
  * Timing, max is longest update() time:
- *   T4.0 Windowed, dBFS Out, 987 uSec
+ *   T4.0 Windowed, dBFS Out, 701 uSec
+ * Averaged over all updates this is 4.3% processor load
+ * or less, depending on averaging.
  *
  * Scaling:
  *   Full scale for floating point DSP is a nebulous concept.  Normally the