microphone profiles (frequency scaling)

- added user-selectable frequency profiles, to allow adjustments for different I2S microphones (including line-in)
-  additionally show "GEQ Input Level" as number in percent.

usermods/audioreactive/audio_reactive.h

@@ -62,6 +62,7 @@ static uint16_t attackTime =  80;             // int: attack time in millisecond
 static uint16_t decayTime = 1400;             // int: decay time in milliseconds.  Default 1.40sec
 // user settable options for FFTResult scaling
 static uint8_t FFTScalingMode = 3;            // 0 none; 1 optimized logarithmic; 2 optimized linear; 3 optimized sqare root
+static uint8_t pinkIndex = 0;                 // 0: default; 1: line-in; 2: IMNP441
 
 // 
 // AGC presets
@@ -150,7 +151,12 @@ static unsigned long sampleTime = 0;
 #endif
 
 // Table of multiplication factors so that we can even out the frequency response.
-static float fftResultPink[NUM_GEQ_CHANNELS] = { 1.70f, 1.71f, 1.73f, 1.78f, 1.68f, 1.56f, 1.55f, 1.63f, 1.79f, 1.62f, 1.80f, 2.06f, 2.47f, 3.35f, 6.83f, 9.55f };
+#define MAX_PINK 2  // 0 = standard, 1= line-in (pink moise only), 2 = IMNP441, ...
+static float fftResultPink[MAX_PINK+1][NUM_GEQ_CHANNELS] = { 
+          { 1.70f, 1.71f, 1.73f, 1.78f, 1.68f, 1.56f, 1.55f, 1.63f, 1.79f, 1.62f, 1.80f, 2.06f, 2.47f, 3.35f, 6.83f, 9.55f },  // default from SR WLED
+          { 1.30f, 1.32f, 1.40f, 1.46f, 1.52f, 1.57f, 1.68f, 1.80f, 1.89f, 2.00f, 2.11f, 2.21f, 2.30f, 2.39f, 3.09f, 4.34f },  // pink noise adjustment only. Good for line-in when there is nomicrophone distortion
+          { 2.60f, 2.20f, 1.30f, 1.15f, 1.35f, 2.05f, 2.90f, 2.24f, 2.00f, 2.00f, 2.55f, 2.90f, 2.70f, 2.05f, 4.50f, 8.85f }   // optimized for IMNP441
+};
 
 // Create FFT object
 #ifdef UM_AUDIOREACTIVE_USE_NEW_FFT
@@ -307,11 +313,12 @@ void FFTcode(void * parameter)
     }
 
     // post-processing of frequency channels (pink noise adjustment, AGC, smooting, scaling)
+    if (pinkIndex > MAX_PINK) pinkIndex = MAX_PINK;
     for (int i=0; i < NUM_GEQ_CHANNELS; i++) {
 
       if (sampleAvg > 1) { // noise gate open
         // Adjustment for frequency curves.
-        fftCalc[i] *= fftResultPink[i];
+        fftCalc[i] *= fftResultPink[pinkIndex][i];
         if (FFTScalingMode > 0) fftCalc[i] *= FFT_DOWNSCALE;  // adjustment related to FFT windowing function
         // Manual linear adjustment of gain using sampleGain adjustment for different input types.
         fftCalc[i] *= soundAgc ? multAgc : ((float)sampleGain/40.0f * (float)inputLevel/128.0f + 1.0f/16.0f); //apply gain, with inputLevel adjustment
@@ -1292,10 +1299,17 @@ class AudioReactive : public Usermod {
       if (enabled) {
         // Input Level Slider
         if (disableSoundProcessing == false) {                                 // only show slider when audio processing is running
-          if (soundAgc > 0)
+          if (soundAgc > 0) {
             infoArr = user.createNestedArray(F("GEQ Input Level"));           // if AGC is on, this slider only affects fftResult[] frequencies
-          else
+            // show slider value as a number
+            float post_gain = (float)inputLevel/128.0f;
+            if (post_gain < 1.0f) post_gain = ((post_gain -1.0f) * 0.8f) +1.0f;
+            post_gain = roundf(post_gain * 100.0f);
+            snprintf_P(myStringBuffer, 15, PSTR("%3.0f %%"), post_gain);
+            infoArr.add(myStringBuffer);
+          } else {
             infoArr = user.createNestedArray(F("Audio Input Level"));
+          }
           uiDomString = F("<div class=\"slider\"><div class=\"sliderwrap il\"><input class=\"noslide\" onchange=\"requestJson({");
           uiDomString += FPSTR(_name);
           uiDomString += F(":{");
@@ -1491,6 +1505,7 @@ class AudioReactive : public Usermod {
 
       JsonObject freqScale = top.createNestedObject("Frequency");
       freqScale[F("Scale")] = FFTScalingMode;
+      freqScale[F("Profile")] = pinkIndex;
 
       JsonObject sync = top.createNestedObject("sync");
       sync[F("port")] = audioSyncPort;
@@ -1539,6 +1554,7 @@ class AudioReactive : public Usermod {
       configComplete &= getJsonValue(top["dynamics"][F("Fall")],  decayTime);
 
       configComplete &= getJsonValue(top["Frequency"][F("Scale")], FFTScalingMode);
+      configComplete &= getJsonValue(top["Frequency"][F("Profile")], pinkIndex);
 
       configComplete &= getJsonValue(top["sync"][F("port")], audioSyncPort);
       configComplete &= getJsonValue(top["sync"][F("mode")], audioSyncEnabled);
@@ -1581,6 +1597,11 @@ class AudioReactive : public Usermod {
       oappend(SET_F("addOption(dd,'Square Root (Energy)',3);"));
       oappend(SET_F("addOption(dd,'Logarithmic (Loudness)',1);"));
 
+      oappend(SET_F("dd=addDropdown('AudioReactive','Frequency:Profile');"));
+      oappend(SET_F("addOption(dd,'standard',0);"));
+      oappend(SET_F("addOption(dd,'Line-In',1);"));
+      oappend(SET_F("addOption(dd,'IMNP441',2);"));
+
       oappend(SET_F("dd=addDropdown('AudioReactive','sync:mode');"));
       oappend(SET_F("addOption(dd,'Off',0);"));
       oappend(SET_F("addOption(dd,'Send',1);"));

wled00/wled.h

@@ -8,7 +8,7 @@
  */
 
 // version code in format yymmddb (b = daily build)
-#define VERSION 2209061
+#define VERSION 2209081
 
 //uncomment this if you have a "my_config.h" file you'd like to use
 //#define WLED_USE_MY_CONFIG