Teensy Audio Peek issue

Arduino-related hardware discussion (including Teensy and other Arduino clones)
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philspitler
Posts: 1
Joined: Fri Oct 21, 2016 8:42 pm

Teensy Audio Peek issue

Post by philspitler » Fri Oct 21, 2016 8:53 pm

Hi, i have an issue that is easy to reproduce.

You will see if you run the code and have "heart.wav" on your SD card that it counts 9 beats when in reality there are only 6 in the file.

Currently the my delay is set to 200ms which should be plenty of time between beats.

Here is the audio file
https://www.dropbox.com/s/z7nu6lg9tv...heart.wav?dl=0

Any thoughts?

Cheers.

Phil

Code: Select all


#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>

// GUItool: begin automatically generated code
AudioPlaySdWav           playSdWav1;     //xy=168,263
AudioAnalyzePeak         peak1;          //xy=491,482
AudioAnalyzePeak         peak2;          //xy=502,344
AudioOutputI2S           i2s1;           //xy=610,203
AudioConnection          patchCord1(playSdWav1, 0, peak2, 0);
AudioConnection          patchCord2(playSdWav1, 0, i2s1, 0);
AudioConnection          patchCord3(playSdWav1, 1, peak1, 0);
AudioConnection          patchCord4(playSdWav1, 1, i2s1, 1);
AudioControlSGTL5000     sgtl5000_1;     //xy=189,662
// GUItool: end automatically generated code

int delaytime = 200; //delay time in milliseconds
boolean lubdub = true;
int led = 2;
int thresholdlevel = 15; // range 0 to 30

int cnt = 0;

void setup() {
  Serial.begin(115200);
  AudioMemory(10);
  pinMode(led, OUTPUT);
  sgtl5000_1.enable();
  sgtl5000_1.volume(0.5);
  SPI.setMOSI(7);
  SPI.setSCK(14);
  if (!(SD.begin(10))) {
    while (1) {
      Serial.println("Unable to access the SD card");
      delay(500);
    }
  }
  delay(1000);
}

// for best effect make your terminal/monitor a minimum of 62 chars wide and as high as you can.

elapsedMillis msecs;

void loop() {
  if (playSdWav1.isPlaying() == false) {
    Serial.println("Start playing");
    playSdWav1.play("heart.WAV");
    delay(10); // wait for library to parse WAV info
  }

  if (msecs > 40) {
    if (peak2.available()) {
      msecs = 0;

      float rightPeak = peak2.read() * 30;
      if ( rightPeak > thresholdlevel) {
        switch (lubdub) {
          case 1:
            digitalWrite(led, HIGH);
            Serial.print("lub   ");
             cnt++;
            Serial.println(cnt);
           
            myDelay(delaytime);

            digitalWrite(led, LOW);
            lubdub = !lubdub;
            break;

          case 0:
            Serial.print("dub  ");
            // Serial.println(rightPeak);
            cnt++;
            Serial.println(cnt);
            myDelay(delaytime);
            lubdub = !lubdub;
            break;
        }


      }
    }
  }
}








void myDelay(unsigned long duration) { //my own delay to uses millis
  unsigned long starter = millis();
  while (millis() - starter <= duration)

  {
    // do nothing but wait
  }
}


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