Adjusted range

src/main.cpp

@@ -13,10 +13,13 @@
 #define I2S_MIC_SERIAL_DATA 10
 
 // Add sample history tracking for range limiting
-#define HISTORY_DURATION_MS 3000  // 3 seconds history
+#define HISTORY_DURATION_MS 1000  // 1 seconds history
 #define SAMPLES_PER_MS (SAMPLE_RATE / 1000)
 #define HISTORY_SIZE (HISTORY_DURATION_MS * SAMPLES_PER_MS)
 
+#define MAX_RANGE_LIMIT 150000000  // Maximum allowed range limit
+#define DEFAULT_RANGE_LIMIT 20000  // Default range limit when no history
+
 class AudioLevelTracker {
 public:
     AudioLevelTracker() {
@@ -32,8 +35,9 @@ public:
             sampleHistory.pop_front();
         }
 
-        // Add new sample
+        // Add new sample, but cap it at MAX_RANGE_LIMIT
         int32_t absValue = abs(sample);
+        absValue = min(absValue, MAX_RANGE_LIMIT);  // Cap the value
         SamplePoint newPoint = {currentTime, absValue};
         sampleHistory.push_back(newPoint);
 
@@ -106,7 +110,7 @@ void loop()
   
   // Calculate dynamic range limit based on max level from last 10 seconds
   int32_t currentMaxLevel = audioLevelTracker.getMaxLevel();
-  int32_t rangelimit = currentMaxLevel > 0 ? currentMaxLevel : 20000; // fallback to default if no history
+  int32_t rangelimit = currentMaxLevel > 0 ? currentMaxLevel : DEFAULT_RANGE_LIMIT; // fallback to default if no history
 
   // dump the samples out to the serial channel
   for (int i = 0; i < samples_read; i++)