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@sample upd

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Dooho Yi 2021-09-30 14:52:21 +09:00
parent 5121ce427a
commit 080ba731b4
1 changed files with 22 additions and 6 deletions
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28
@sampler/src/main.cpp
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@ -16,7 +16,19 @@
#define IDLE_FREQ 22000
#define IDLE_AMP 0 // --> creative muvo 2 doesn't need this. they just stay on!
#define GAIN_MAX 1.0 // if 1.0 is too loud, give max. limit here.
#define GAIN_FACTOR 1.0 // if 1.0 is too loud, give a multiplier here.
//==========<list-of-configurations>===========
//
// 'USE_EXTERNAL_ANALOG_REFERENCE'
// --> this was used probably to make output swing greater Vpp == 3.3v
// but, with this + small headphones, i cannot hear anything.
// and, this might be dangerous in some case -> this is suspicous of 1 broken teensy 3.6
// so, unless you are so sure, don't enable this.
// !WARNING! : teensy36 could be destroyed! don't enable it.
//
//==========</list-of-configurations>===========
#define USE_EXTERNAL_ANALOG_REFERENCE
//teensy audio
#include <Audio.h>
@ -165,7 +177,7 @@ void receiveEvent(int numBytes) {
int velocity = str_velocity.toInt(); // 0 ~ 127
float amp_gain = (float)velocity / 127.0;
//
amp_gain = amp_gain * GAIN_MAX;
amp_gain = amp_gain * GAIN_FACTOR;
//
amp1.gain(amp_gain);
amp2.gain(amp_gain);
@ -203,7 +215,8 @@ void printDirectory(File dir, int numTabs) {
// Serial.print(entry.name());
if (entry.isDirectory()) {
Serial.println("/");
printDirectory(entry, numTabs+1);
//non-recursive listing...
// printDirectory(entry, numTabs+1);
} else {
// files have sizes, directories do not
Serial.print("\t\t");
@ -247,11 +260,14 @@ void setup() {
//audio
AudioMemory(20);
// dacs1.analogReference(EXTERNAL);
#if defined(USE_EXTERNAL_ANALOG_REFERENCE) && !defined(TEENSY36)
Serial.println("- ======== 'USE_EXTERNAL_ANALOG_REFERENCE' ========");
dacs1.analogReference(EXTERNAL);
// <-- this was used probably to make output swing greater Vpp == 3.3v
// but, with this + small headphones, i cannot hear anything.
// and, this might be dangerous in some case -> this is suspicous of 1 broken teensy 3.6
// so, unless you are so sure, don't enable this.
#endif
mixer1.gain(0,1.0);
mixer1.gain(1,1.0);
@ -261,8 +277,8 @@ void setup() {
mixer2.gain(1,1.0);
mixer2.gain(2,0);
mixer2.gain(3,0);
amp1.gain(GAIN_MAX);
amp2.gain(GAIN_MAX);
amp1.gain(GAIN_FACTOR);
amp2.gain(GAIN_FACTOR);
//let auto-poweroff speakers stay turned ON!
sine1.frequency(IDLE_FREQ);