Jose/esp32i2s
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Adjusted range

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Jose
2025-04-25 09:08:43 +02:00
parent e9205c88fa
commit 25dae87647
1 changed files with 7 additions and 3 deletions
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10
src/main.cpp
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@@ -13,10 +13,13 @@
#define I2S_MIC_SERIAL_DATA 10 #define I2S_MIC_SERIAL_DATA 10
// Add sample history tracking for range limiting // 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 SAMPLES_PER_MS (SAMPLE_RATE / 1000)
#define HISTORY_SIZE (HISTORY_DURATION_MS * SAMPLES_PER_MS) #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 { class AudioLevelTracker {
public: public:
AudioLevelTracker() { AudioLevelTracker() {
@@ -32,8 +35,9 @@ public:
sampleHistory.pop_front(); sampleHistory.pop_front();
} }
// Add new sample // Add new sample, but cap it at MAX_RANGE_LIMIT
int32_t absValue = abs(sample); int32_t absValue = abs(sample);
absValue = min(absValue, MAX_RANGE_LIMIT); // Cap the value
SamplePoint newPoint = {currentTime, absValue}; SamplePoint newPoint = {currentTime, absValue};
sampleHistory.push_back(newPoint); sampleHistory.push_back(newPoint);
@@ -106,7 +110,7 @@ void loop()
// Calculate dynamic range limit based on max level from last 10 seconds // Calculate dynamic range limit based on max level from last 10 seconds
int32_t currentMaxLevel = audioLevelTracker.getMaxLevel(); 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 // dump the samples out to the serial channel
for (int i = 0; i < samples_read; i++) for (int i = 0; i < samples_read; i++)