eringee

06-02-2016, 04:46 AM

Hi everyone - getting into the Teensy Audio Library is super fun, but I find the synthesis aspects a little opaque at times

Can someone tell me why this code doesn't fade away nicely, but instead clips at the end of the bell-tone? I've been trying to get the bell to fade away and can't understand what's wrong...

I'm working with the DAC not the audioshield, so you'll have to change a bit of code if you want to use the shield...

Thanks for giving me such nice tools to learn with!

Erin

#include <Audio.h>

#include <Wire.h>

#include <SPI.h>

#include <SD.h>

#include <SerialFlash.h>

int ringabell = 0;

int testLed = 13;

boolean noteGo;

boolean noteStop;

// GUItool: begin automatically generated code

AudioSynthWaveform waveform1; //xy=283,52

AudioSynthWaveform waveform2; //xy=299,262

AudioEffectEnvelope envelope1; //xy=429,51

AudioSynthWaveformSineModulated sine_fm1; //xy=435,126

AudioSynthWaveformSineModulated sine_fm2; //xy=451,266

AudioEffectEnvelope envelope3; //xy=511,360

AudioEffectEnvelope envelope2; //xy=529,192

AudioMixer4 mixer1; //xy=690,230

AudioOutputAnalog dac1; //xy=861,250

AudioConnection patchCord1(waveform1, envelope1);

AudioConnection patchCord2(waveform2, sine_fm2);

AudioConnection patchCord3(envelope1, sine_fm1);

AudioConnection patchCord4(sine_fm1, envelope2);

AudioConnection patchCord5(sine_fm2, envelope3);

AudioConnection patchCord6(envelope3, 0, mixer1, 1);

AudioConnection patchCord7(envelope2, 0, mixer1, 0);

AudioConnection patchCord8(mixer1, dac1);

// GUItool: end automatically generated code

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

AudioMemory(8);

waveform1.begin(0.25, 400, WAVEFORM_SINE);

waveform2.begin(0.25, 400, WAVEFORM_SINE);

sine_fm1.frequency(200);

sine_fm1.amplitude(0.5);

sine_fm2.frequency(200);

sine_fm2.amplitude(0.5);

mixer1.gain(0, 0);

//mixer1.gain(1, 0);

envelope1.attack(2);

envelope1.hold(1);

envelope1.decay(3000);

envelope1.sustain(0);

envelope1.release(0.0);

envelope2.attack(2);

envelope2.hold(1);

envelope2.decay(3000);

envelope2.sustain(0);

envelope2.release(0.0);

envelope3.attack(2);

envelope3.hold(1);

envelope3.decay(200);

envelope3.sustain(0.1);

envelope3.release(500);

pinMode(testLed, OUTPUT);

}

elapsedMillis every1; //note that this occurs outside the setup

void loop() {

// put your main code here, to run repeatedly:

if(every1 >= 1) {

ringabell = ringabell+1;

if(ringabell == 2) {

sine_fm2.amplitude(0.5);

envelope3.noteOn();

digitalWrite(testLed, HIGH);

}

if(ringabell == 1200) {

sine_fm2.amplitude(0.0);

noteStop=1;

digitalWrite(testLed, LOW);

}

if(ringabell >= 3000) ringabell = 0;

every1 = every1-1;

}

if(noteStop==1) {

envelope3.noteOff();

noteStop=0;

}

}

Can someone tell me why this code doesn't fade away nicely, but instead clips at the end of the bell-tone? I've been trying to get the bell to fade away and can't understand what's wrong...

I'm working with the DAC not the audioshield, so you'll have to change a bit of code if you want to use the shield...

Thanks for giving me such nice tools to learn with!

Erin

#include <Audio.h>

#include <Wire.h>

#include <SPI.h>

#include <SD.h>

#include <SerialFlash.h>

int ringabell = 0;

int testLed = 13;

boolean noteGo;

boolean noteStop;

// GUItool: begin automatically generated code

AudioSynthWaveform waveform1; //xy=283,52

AudioSynthWaveform waveform2; //xy=299,262

AudioEffectEnvelope envelope1; //xy=429,51

AudioSynthWaveformSineModulated sine_fm1; //xy=435,126

AudioSynthWaveformSineModulated sine_fm2; //xy=451,266

AudioEffectEnvelope envelope3; //xy=511,360

AudioEffectEnvelope envelope2; //xy=529,192

AudioMixer4 mixer1; //xy=690,230

AudioOutputAnalog dac1; //xy=861,250

AudioConnection patchCord1(waveform1, envelope1);

AudioConnection patchCord2(waveform2, sine_fm2);

AudioConnection patchCord3(envelope1, sine_fm1);

AudioConnection patchCord4(sine_fm1, envelope2);

AudioConnection patchCord5(sine_fm2, envelope3);

AudioConnection patchCord6(envelope3, 0, mixer1, 1);

AudioConnection patchCord7(envelope2, 0, mixer1, 0);

AudioConnection patchCord8(mixer1, dac1);

// GUItool: end automatically generated code

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

AudioMemory(8);

waveform1.begin(0.25, 400, WAVEFORM_SINE);

waveform2.begin(0.25, 400, WAVEFORM_SINE);

sine_fm1.frequency(200);

sine_fm1.amplitude(0.5);

sine_fm2.frequency(200);

sine_fm2.amplitude(0.5);

mixer1.gain(0, 0);

//mixer1.gain(1, 0);

envelope1.attack(2);

envelope1.hold(1);

envelope1.decay(3000);

envelope1.sustain(0);

envelope1.release(0.0);

envelope2.attack(2);

envelope2.hold(1);

envelope2.decay(3000);

envelope2.sustain(0);

envelope2.release(0.0);

envelope3.attack(2);

envelope3.hold(1);

envelope3.decay(200);

envelope3.sustain(0.1);

envelope3.release(500);

pinMode(testLed, OUTPUT);

}

elapsedMillis every1; //note that this occurs outside the setup

void loop() {

// put your main code here, to run repeatedly:

if(every1 >= 1) {

ringabell = ringabell+1;

if(ringabell == 2) {

sine_fm2.amplitude(0.5);

envelope3.noteOn();

digitalWrite(testLed, HIGH);

}

if(ringabell == 1200) {

sine_fm2.amplitude(0.0);

noteStop=1;

digitalWrite(testLed, LOW);

}

if(ringabell >= 3000) ringabell = 0;

every1 = every1-1;

}

if(noteStop==1) {

envelope3.noteOff();

noteStop=0;

}

}