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MicroDexed
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Code Issues Releases Wiki Activity

Added simple antialias filter.

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pull/4/head
Holger Wirtz 6 years ago
parent 6a920e0107
commit 138d628c44
1 changed files with 23 additions and 20 deletions
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  1. 43
      MicroDexed.ino

43
MicroDexed.ino
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@ -54,40 +54,42 @@ AudioFilterStateVariable filter1;
AudioEffectDelay delay1;
AudioMixer4 mixer1;
AudioMixer4 mixer2;
AudioFilterBiquad antialias;
AudioConnection patchCord0(queue1, peak1);
AudioConnection patchCord1(queue1, 0, filter1, 0);
AudioConnection patchCord2(filter1, 0, delay1, 0);
AudioConnection patchCord3(filter1, 0, mixer1, 0);
AudioConnection patchCord4(filter1, 0, mixer2, 0);
AudioConnection patchCord5(delay1, 0, mixer1, 1);
AudioConnection patchCord6(delay1, 0, mixer2, 2);
AudioConnection patchCord7(mixer1, delay1);
AudioConnection patchCord8(queue1, 0, mixer1, 3); // for disabling the filter
AudioConnection patchCord9(mixer1, 0, mixer2, 1);
AudioConnection patchCord1(queue1, antialias);
AudioConnection patchCord2(antialias, 0, filter1, 0);
AudioConnection patchCord3(filter1, 0, delay1, 0);
AudioConnection patchCord4(filter1, 0, mixer1, 0);
AudioConnection patchCord5(filter1, 0, mixer2, 0);
AudioConnection patchCord6(delay1, 0, mixer1, 1);
AudioConnection patchCord7(delay1, 0, mixer2, 2);
AudioConnection patchCord8(mixer1, delay1);
AudioConnection patchCord9(queue1, 0, mixer1, 3); // for disabling the filter
AudioConnection patchCord10(mixer1, 0, mixer2, 1);
#if defined(TEENSY_AUDIO_BOARD)
AudioOutputI2S i2s1;
AudioConnection patchCord110(mixer2, 0, i2s1, 0);
AudioConnection patchCord111(mixer2, 0, i2s1, 1);
AudioConnection patchCord111(mixer2, 0, i2s1, 0);
AudioConnection patchCord112(mixer2, 0, i2s1, 1);
AudioControlSGTL5000 sgtl5000_1;
#elif defined(TGA_AUDIO_BOARD)
AudioOutputI2S i2s1;
AudioAmplifier volume_r;
AudioAmplifier volume_l;
AudioConnection patchCord10(mixer2, volume_r);
AudioConnection patchCord11(mixer2, volume_l);
AudioConnection patchCord12(volume_r, 0, i2s1, 1);
AudioConnection patchCord13(volume_l, 0, i2s1, 0);
AudioConnection patchCord11(mixer2, volume_r);
AudioConnection patchCord12(mixer2, volume_l);
AudioConnection patchCord13(volume_r, 0, i2s1, 1);
AudioConnection patchCord14(volume_l, 0, i2s1, 0);
AudioControlWM8731master wm8731_1;
#else
AudioOutputPT8211 pt8211_1;
AudioAmplifier volume_master;
AudioAmplifier volume_r;
AudioAmplifier volume_l;
AudioConnection patchCord10(mixer2, 0, volume_master, 0);
AudioConnection patchCord11(volume_master, volume_r);
AudioConnection patchCord12(volume_master, volume_l);
AudioConnection patchCord13(volume_r, 0, pt8211_1, 0);
AudioConnection patchCord14(volume_l, 0, pt8211_1, 1);
AudioConnection patchCord11(mixer2, 0, volume_master, 0);
AudioConnection patchCord12(volume_master, volume_r);
AudioConnection patchCord13(volume_master, volume_l);
AudioConnection patchCord14(volume_r, 0, pt8211_1, 0);
AudioConnection patchCord15(volume_l, 0, pt8211_1, 1);
#endif
Dexed* dexed = new Dexed(SAMPLE_RATE);
@ -231,6 +233,7 @@ void setup()
#endif
// Init effects
antialias.setLowpass(0, 6000, 0.707);
filter1.frequency(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0);
//filter1.resonance(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0));
filter1.resonance(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61);

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