53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/AudioBoardStream.h"
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#include "AudioTools/AudioLibs/AudioRealFFT.h" // or AudioKissFFT
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AudioBoardStream kit(AudioKitEs8388V1); // Audio source
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AudioRealFFT fft; // or AudioKissFFT
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StreamCopy copier(fft, kit); // copy mic to tfl
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int channels = 2;
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int samples_per_second = 44100;
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int bits_per_sample = 16;
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float value=0;
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// display fft result
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void fftResult(AudioFFTBase &fft){
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float diff;
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auto result = fft.result();
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if (result.magnitude>100){
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Serial.print(result.frequency);
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Serial.print(" ");
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Serial.print(result.magnitude);
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Serial.print(" => ");
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Serial.print(result.frequencyAsNote(diff));
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Serial.print( " diff: ");
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Serial.println(diff);
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}
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}
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void setup() {
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
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// setup Audiokit
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auto cfg = kit.defaultConfig(RX_MODE);
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cfg.input_device = ADC_INPUT_LINE2;
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cfg.channels = channels;
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cfg.sample_rate = samples_per_second;
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cfg.bits_per_sample = bits_per_sample;
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kit.begin(cfg);
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// Setup FFT
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auto tcfg = fft.defaultConfig();
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tcfg.length = 8192;
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tcfg.channels = channels;
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tcfg.sample_rate = samples_per_second;
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tcfg.bits_per_sample = bits_per_sample;
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tcfg.callback = &fftResult;
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fft.begin(tcfg);
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}
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void loop() {
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copier.copy();
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} |