Dooho Yi
91f92c0e6c
migration from 'smp_v1p0' dev. for 'sampler' -> skip irrelavant note msg. and keep playing
136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
// Granular Effect Example - Pitch shift or freeze sound
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//
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// This example is meant to be used with 3 buttons (pin 0,
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// 1, 2) and 2 knobs (pins 16/A2, 17/A3), which are present
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// on the audio tutorial kit.
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// https://www.pjrc.com/store/audio_tutorial_kit.html
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//
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// Data files to put on your SD card can be downloaded here:
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// http://www.pjrc.com/teensy/td_libs_AudioDataFiles.html
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//
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// This example code is in the public domain.
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#include <Audio.h>
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#include <Wire.h>
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#include <SPI.h>
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#include <SD.h>
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#include <SerialFlash.h>
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#include <Bounce.h>
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AudioPlaySdWav playSdWav1; //xy=163,135
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AudioMixer4 mixer1; //xy=332,167
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AudioEffectGranular granular1; //xy=504,155
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AudioOutputI2S i2s1; //xy=664,185
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AudioConnection patchCord1(playSdWav1, 0, mixer1, 0);
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AudioConnection patchCord2(playSdWav1, 1, mixer1, 1);
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AudioConnection patchCord3(mixer1, granular1);
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AudioConnection patchCord4(granular1, 0, i2s1, 0);
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AudioConnection patchCord5(granular1, 0, i2s1, 1);
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AudioControlSGTL5000 sgtl5000_1; //xy=236,248
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Bounce button0 = Bounce(0, 15);
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Bounce button1 = Bounce(1, 15);
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Bounce button2 = Bounce(2, 15);
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#define GRANULAR_MEMORY_SIZE 12800 // enough for 290 ms at 44.1 kHz
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int16_t granularMemory[GRANULAR_MEMORY_SIZE];
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// Use these with the Teensy Audio Shield
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#define SDCARD_CS_PIN 10
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#define SDCARD_MOSI_PIN 7
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#define SDCARD_SCK_PIN 14
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// Use these with the Teensy 3.5 & 3.6 SD card
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//#define SDCARD_CS_PIN BUILTIN_SDCARD
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//#define SDCARD_MOSI_PIN 11 // not actually used
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//#define SDCARD_SCK_PIN 13 // not actually used
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// Use these for the SD+Wiz820 or other adaptors
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//#define SDCARD_CS_PIN 4
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//#define SDCARD_MOSI_PIN 11
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//#define SDCARD_SCK_PIN 13
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#define NUM_FILES 4
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const char *filenames[NUM_FILES]={"SDTEST1.WAV", "SDTEST2.WAV", "SDTEST3.WAV", "SDTEST4.WAV"};
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int nextfile=0;
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void setup() {
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Serial.begin(9600);
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AudioMemory(10);
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pinMode(0, INPUT_PULLUP);
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pinMode(1, INPUT_PULLUP);
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pinMode(2, INPUT_PULLUP);
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sgtl5000_1.enable();
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sgtl5000_1.volume(0.5);
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mixer1.gain(0, 0.5);
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mixer1.gain(1, 0.5);
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// the Granular effect requires memory to operate
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granular1.begin(granularMemory, GRANULAR_MEMORY_SIZE);
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SPI.setMOSI(SDCARD_MOSI_PIN);
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SPI.setSCK(SDCARD_SCK_PIN);
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if (!(SD.begin(SDCARD_CS_PIN))) {
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// stop here, but print a message repetitively
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while (1) {
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Serial.println("Unable to access the SD card");
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delay(500);
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}
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}
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}
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void loop() {
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if (playSdWav1.isPlaying() == false) {
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// start the next song playing
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playSdWav1.play(filenames[nextfile]);
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Serial.print("Playing: ");
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Serial.println(filenames[nextfile]);
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delay(5); // brief delay for the library read WAV info
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nextfile = nextfile + 1;
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if (nextfile >= NUM_FILES) {
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nextfile = 0;
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}
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}
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// read pushbuttons
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button0.update();
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button1.update();
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button2.update();
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// read knobs, scale to 0-1.0 numbers
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float knobA2 = (float)analogRead(A2) / 1023.0;
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float knobA3 = (float)analogRead(A3) / 1023.0;
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// Button 0 starts Freeze effect
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if (button0.fallingEdge()) {
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float msec = 100.0 + (knobA3 * 190.0);
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granular1.beginFreeze(msec);
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Serial.print("Begin granular freeze using ");
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Serial.print(msec);
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Serial.println(" grains");
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}
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if (button0.risingEdge()) {
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granular1.stop();
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}
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// Button 1 starts Pitch Shift effect
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if (button1.fallingEdge()) {
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float msec = 25.0 + (knobA3 * 75.0);
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granular1.beginPitchShift(msec);
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Serial.print("Begin granular pitch phift using ");
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Serial.print(msec);
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Serial.println(" grains");
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}
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if (button1.risingEdge()) {
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granular1.stop();
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}
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// Continuously adjust the speed, based on the A3 pot
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float ratio;
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ratio = powf(2.0, knobA2 * 2.0 - 1.0); // 0.5 to 2.0
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//ratio = powf(2.0, knobA2 * 6.0 - 3.0); // 0.125 to 8.0 -- uncomment for far too much range!
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granular1.setSpeed(ratio);
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}
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