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96 lines
3.2 KiB
96 lines
3.2 KiB
/* AudioTestSinCos.ino Bob Larkin 19 April 2020
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* Generates 1024 samples of Sin and Cos from the
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* AudioSynthSinCos_F32. Samples sent to the USB
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* Serial.print. Also, the sine and cosine signals are
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* connected to the AudioAnalyzePhase_32 and a third
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* Queue to Serial.print the, close to 90 degree,
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* phase difference.
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*/
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#include "Audio.h"
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#include <OpenAudio_ArduinoLibrary.h>
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#include "DSP_TeensyAudio_F32.h"
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#define NBLOCKS 8
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// Necessary foraudio stream
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AudioInputI2S i2s1;
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AudioConvert_I16toF32 convert;
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AudioConnection pcI16(i2s1, 0, convert, 0);
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// And the experiment
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AudioSynthSineCosine_F32 sincos1;
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AudioRecordQueue_F32 queue1;
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AudioRecordQueue_F32 queue2;
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AudioRecordQueue_F32 queue3;
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AudioAnalyzePhase_F32 phase1;
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AudioConnection_F32 patchCord1(sincos1, 0, queue1, 0);
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AudioConnection_F32 patchCord2(sincos1, 1, queue2, 0);
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AudioConnection_F32 patchCord3(sincos1, 0, phase1, 0);
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AudioConnection_F32 patchCord4(sincos1, 1, phase1, 1);
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AudioConnection_F32 patchCord5(phase1, 0, queue3, 0);
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float dt1[128*NBLOCKS]; // Place to save sin
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float dt2[128*NBLOCKS]; // and cos
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float dt3[128*NBLOCKS]; // and phase angle
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float *pq1, *pd1, *pq2, *pd2, *pd3, *pq3;
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int i, k;
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void setup(void) {
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AudioMemory(5); //allocate Int16 audio data blocks
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AudioMemory_F32(20); //allocate Float32 audio data blocks
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Serial.begin(300); delay(1000);
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// simple() is not needed here, as it is default unless amplitude or
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// phaseS_C_r is changed. But, it can be used to restore simple after
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// involking changes. Here it is just a sample of usage.
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sincos1.simple(true);
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// Default amlitude +/- 1.0
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sincos1.frequency(1212.345);
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// If either or both of the following two are uncommented, the
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// detailed, slower, sincos will be used:
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// sincos1.amplitude(0.9);
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// sincos1.phaseS_C_r(120.00*M_PI/180.0); // Test non-90 degree, like 120 deg
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// Set next to 1 to print errors in update(), or 0 for no print. For debug only
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phase1.showError(0);
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queue1.begin();
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queue2.begin();
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queue3.begin();
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i = 0; k=0;
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}
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void loop(void) {
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// Collect 128xNBLOCKS samples and output to Serial
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// This "if" will be active for i on (0, NBLOCKS-1)
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if (queue1.available() >= 1 && queue2.available()
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&& queue3.available() && i>=0 && i<NBLOCKS) {
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pq1 = queue1.readBuffer();
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pd1 = &dt1[128*i];
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pq2 = queue2.readBuffer();
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pd2 = &dt2[128*i];
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pq3 = queue3.readBuffer();
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pd3 = &dt3[128*i++];
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for(k=0; k<128; k++) {
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*pd1++ = *pq1++; // Save 128 words in dt1[]
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*pd2++ = *pq2++;
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*pd3++ = *pq3++;
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}
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queue1.freeBuffer();
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queue2.freeBuffer();
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queue3.freeBuffer();
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}
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if(i == NBLOCKS) { // Wait for all NBLOCKS
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i = NBLOCKS + 1; // Should stop data collection
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queue1.end(); // No more data to queue1
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queue2.end(); // No more data to queue2
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Serial.println("1024 Sine, Cosine, Phase Data Points:");
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for (k=0; k<128*NBLOCKS; k++) {
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Serial.print (dt1[k],7);
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Serial.print (",");
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Serial.print (dt2[k],7);
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Serial.print (",");
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Serial.println(dt3[k],7);
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}
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}
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}
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