38 lines
885 B
C++
38 lines
885 B
C++
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#include "AudioTools.h"
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#include "AudioTools/FFT/AudioRealFFT.h" // using RealFFT
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#include "AudioTools/AudioLibs/MiniAudioStream.h"
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AudioInfo info(44100, 2, 16);
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AudioRealFFT afft; // or AudioKissFFT
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//CsvOutput<int16_t> out(Serial);
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MiniAudioStream out;
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StreamCopy copier(out, afft);
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int bin_idx = 0;
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// privide fft data
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void fftFillData(AudioFFTBase &fft) {
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fft.clearBins();
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FFTBin bin{1.0f,1.0f};
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assert(fft.setBin(bin_idx, bin));
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// restart from first bin
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if (++bin_idx>=fft.size()) bin_idx = 0;
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}
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void setup() {
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
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// Setup FFT
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auto tcfg = afft.defaultConfig(RX_MODE);
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tcfg.copyFrom(info);
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tcfg.length = 1024;
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tcfg.callback = fftFillData;
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afft.begin(tcfg);
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// setup output
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auto ocfg = out.defaultConfig(TX_MODE);
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ocfg.copyFrom(info);
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out.begin(ocfg);
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}
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void loop() { copier.copy(); }
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