56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/**
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* @file channel-converter-bin-diff.ino
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* @author Urs Utzinger
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* @brief On two channels reduce number of samples by binning, then compute difference between two channels
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* @copyright GPLv3
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**/
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#include "AudioTools.h"
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#define BINSIZE 4
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AudioInfo info1(44100, 1, 16);
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AudioInfo info2(44100, 2, 16);
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AudioInfo info_out(44100/BINSIZE, 1, 16);
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SineWaveGenerator<int16_t> sineWave1(16000); // subclass of SoundGenerator with max amplitude of 32000
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SineWaveGenerator<int16_t> sineWave2(16000); // subclass of SoundGenerator with max amplitude of 32000
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GeneratedSoundStream<int16_t> sound1(sineWave1); // stream generated from sine wave
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GeneratedSoundStream<int16_t> sound2(sineWave2); // stream generated from sine wave
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InputMerge<int16_t> imerge;
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ChannelBinDiff bindiffer; // Binning each channel by average length, setup see below
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ConverterStream<int16_t> converted_stream(imerge, bindiffer); // pipe the merged sound to the converter
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CsvOutput<int16_t> serial_out(Serial); // serial output
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StreamCopy copier(serial_out, converted_stream); // stream the binner output to serial port
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// Arduino Setup
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void setup(void) {
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// Open Serial
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Serial.begin(115200);
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while(!Serial);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Debug); // Info, Warning, Error, Debug
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// Setup sine wave
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sineWave1.begin(info1, N_B4);
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sineWave2.begin(info1, N_B5);
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// Merge input to stereo
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imerge.add(sound1, 1);
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imerge.add(sound2, 1);
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imerge.begin(info2);
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// Setup binning
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bindiffer.setChannels(2);
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bindiffer.setBits(16);
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bindiffer.setBinSize(BINSIZE);
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bindiffer.setAverage(true);
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// Define CSV Output
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serial_out.begin(info_out);
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}
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// Arduino loop - copy sound to out with conversion
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void loop() {
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copier.copy();
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} |