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58 lines
1.6 KiB
58 lines
1.6 KiB
/* AudioTestPeakRMS.ino Bob Larkin 2 May 2020
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*
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* Generates sine wave and measures RMS, Peak and Peak
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* to Peak values.
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* NOTE: This is for the floating point _F32 versions of
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* AnalyzePeak and AnalyzeRMS *NOT* the Teensy Audio Library
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* versions with 16-bit Fixed point data blocks.
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*/
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#include "Audio.h"
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#include <OpenAudio_ArduinoLibrary.h>
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#include "analyze_peak_f32.h"
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#include "analyze_rms_f32.h"
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AudioInputI2S i2s1;
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AudioSynthWaveformSine_F32 sine1;
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AudioAnalyzeRMS_F32 rms1;
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AudioAnalyzePeak_F32 peak1;
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AudioConnection_F32 patchCord1(sine1, 0, rms1, 0);
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AudioConnection_F32 patchCord2(sine1, 0, peak1, 0);
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uint16_t n = 0;
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void setup(void) {
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AudioMemory(5); //allocate Int16 audio data blocks
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AudioMemory_F32(5); //allocate Float32 audio data blocks
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Serial.begin(300); delay(1000);
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// Default amlitude +/- 1.0
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sine1.frequency(1000.0);
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// Set next to 0 to suppress print errors in update()
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rms1.showError(1);
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peak1.showError(1);
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}
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void loop(void) {
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if (n & 1) {
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while(!rms1.available() ) ; //Wait
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Serial.print("RMS value = ");
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Serial.println(rms1.read(), 7 );
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while(!peak1.available() ) ; //Wait
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Serial.print("Peak value = ");
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Serial.println(peak1.read(), 7 );
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}
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else {
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while(!rms1.available() ) ; //Wait
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Serial.print("RMS value = ");
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Serial.println(rms1.read(), 7 );
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while(!peak1.available() ) ; //Wait
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Serial.print("Peak to peak value = ");
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Serial.println(peak1.readPeakToPeak(), 7 );
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}
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n++;
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// The RMS and Peak data collection runs during
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// delay() because of hardware interrupts
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delay(1000);
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}
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