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72 lines
2.0 KiB
72 lines
2.0 KiB
4 years ago
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/*
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* Matrix mixer example
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*
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*/
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#include <Audio.h>
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#include "mixerMatrix.h"
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#define INS 8
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#define OUTS 2
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#define BLOX 20
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AudioSynthWaveformSine sine1;
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AudioAnalyzePeak peak1;
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// define the mixer with the required number of INS and OUTS
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AudioMixerMatrix Amixer(INS, OUTS);
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AudioAnalyzePeak peak2;
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AudioAnalyzePeak peak3;
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// we need a source of interrupts for the Audio library to operate
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// AudioInputAnalog is convenient for T3s, but doesn't create interrupts on the T4 (yet)
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// I2S (SGTL5000) is used herre as it's the most common
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//AudioInputAnalog adc1;
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AudioOutputI2S i2s1;
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AudioControlSGTL5000 sgtl1;
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// sine to mixer input 1 and peak1
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AudioConnection p1(sine1, 0, Amixer, 0);
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AudioConnection p2(sine1, 0, peak1, 0);
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// mixer outputs 1 & 2 to peaks and I2S
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AudioConnection p3(Amixer, 0, i2s1, 0);
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AudioConnection p4(Amixer, 0, peak2, 0);
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AudioConnection p5(Amixer, 1, i2s1, 1);
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AudioConnection p6(Amixer, 1, peak3, 0);
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void setup()
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{
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// put your setup code here, to run once:
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AudioMemory(BLOX);
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Serial.begin(115200);
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delay(1000);
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Serial.println("Starting matrix mixer example");
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sgtl1.enable();
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sine1.frequency(800);
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sine1.amplitude(1.0);
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Serial.println("Done setup");
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}
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uint32_t loops;
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float Again1 = 1.0, Again2 = 1.0;
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void loop() {
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int procUse = AudioProcessorUsage();
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int memUse = AudioMemoryUsage();
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float peakA = peak1.read();
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float peakB = peak2.read();
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float peakC = peak3.read();
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Serial.printf("%i: proc %i, mem %i, input level %3.2f\n", loops, procUse, memUse, peakA);
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Serial.printf("Gain1 %3.2f, output1 level %3.2f\n", Again1, peakB);
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Serial.printf("Gain2 %3.2f, output2 level %3.2f\n\n", Again2, peakC);
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// set gain for next iteration
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Again1 = (float)random(100, 1000) / 1000.0; // gain 0.1 .. 1.0
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Amixer.gain(0, 0, Again1);
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Again2 = (float)random(100, 1000) / 1000.0; // gain 0.1 .. 1.0
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Amixer.gain(0, 1, Again2);
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delay(5000);
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loops++;
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}
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