Comment additions

AudioSettings_F32.h

@@ -2,7 +2,7 @@
 #ifndef _AudioSettings_F32_
 #define _AudioSettings_F32_
 
-#include <AudioStream.h> // for AUDIO_SAMPLE_RATE_EXACT, AUDIO_BLOCK_SAMPLES
+#include <AudioStream.h> // 16-bit audio for AUDIO_SAMPLE_RATE_EXACT, AUDIO_BLOCK_SAMPLES
 
 class AudioSettings_F32 {
 	public:

AudioStream_F32.cpp

@@ -196,4 +196,3 @@ void AudioConnection_F32::connect(void) {
   dst.active = true;
   __enable_irq();
 }
-

AudioStream_F32.h

@@ -9,7 +9,38 @@
  *
  * Added id to audio_block_f32_t class, per Tympan.  Bob Larkin June 2020
  *
- * MIT License.  use at your own risk.
+ *
+ * Thse classes are derived from their equivalents in Teensyduino. Thus:
+ * Teensyduino Core Library
+ * http://www.pjrc.com/teensy/
+ * Copyright (c) 2017 PJRC.COM, LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * 1. The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * 2. If the Software is incorporated into a build system that allows
+ * selection among a list of target devices, then similar target
+ * devices manufactured by PJRC.COM must be included in the list of
+ * target devices and selectable in the same manner.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * All additions are under  MIT License.  use at your own risk.
 */
 
 #ifndef _AudioStream_F32_h
@@ -32,22 +63,23 @@ class AudioConnection_F32;
 //https://github.com/PaulStoffregen/cores/blob/268848cdb0121f26b7ef6b82b4fb54abbe465427/teensy3/AudioStream.h
 // Added id, per Tympan.  Should not disturb existing programs.  Bob Larkin June 2020
 class audio_block_f32_t {
-	public:
-		audio_block_f32_t(void) {};
-		audio_block_f32_t(const AudioSettings_F32 &settings) {
-			fs_Hz = settings.sample_rate_Hz;
-			length = settings.audio_block_samples;
-		};
-		
-		unsigned char ref_count;
-		unsigned char memory_pool_index;
-		unsigned char reserved1;
-		unsigned char reserved2;
-		float32_t data[AUDIO_BLOCK_SAMPLES]; // AUDIO_BLOCK_SAMPLES is 128, from AudioStream.h
-		const int full_length = AUDIO_BLOCK_SAMPLES;
-		int length = AUDIO_BLOCK_SAMPLES; // AUDIO_BLOCK_SAMPLES is 128, from AudioStream.h
-		float fs_Hz = AUDIO_SAMPLE_RATE; // AUDIO_SAMPLE_RATE is 44117.64706 from AudioStream.h
-		unsigned long id;
+    public:
+        audio_block_f32_t(void) {};
+        audio_block_f32_t(const AudioSettings_F32 &settings) {
+            fs_Hz = settings.sample_rate_Hz;
+            length = settings.audio_block_samples;
+        };
+
+        unsigned char ref_count;
+        unsigned char memory_pool_index;
+        unsigned char reserved1;
+        unsigned char reserved2;
+        float32_t data[AUDIO_BLOCK_SAMPLES]; // AUDIO_BLOCK_SAMPLES is 128, from AudioStream.h
+        const int full_length = AUDIO_BLOCK_SAMPLES;
+        int length = AUDIO_BLOCK_SAMPLES; // AUDIO_BLOCK_SAMPLES is 128, from AudioStream.h
+                                          // For Teensy 4.x, AUDIO_SAMPLE_RATE is 44100
+        float fs_Hz = AUDIO_SAMPLE_RATE;  // T3.x AUDIO_SAMPLE_RATE is 44117.64706
+        unsigned long id;
 };
 
 class AudioConnection_F32