Wave Table Synthesizer(Occilator only). I will make Envelope Generator and MML for play music.
Project: Synthesizer. It is using embed to Chip Tune Synthesizer for NXP LPC1768.
At First
Prepare an amplifier with volume wheel. The amplifier wire at pin1 to pin18(D/A converter) from IC Clip or Breedboard.
Play
Check out this project and deploy your mbed. And then push the reset key.
You hear a sound from amplifier.
Modify
First step, you can see main.cpp. This source file plays an occilator with "wait()". Modify frequency at
#define ADD 0x2000000
on the top of source.
Occilator select 7 waveforms.
- OCC_NONE,
- OCC_SQUARE,
- OCC_SINE,
- OCC_SAW,
- OCC_WT,
- OCC_NOISE,
- OCC_TRIANGLE,
WT means WaveTable Synthesizer.Use "setWave()" function at first.Wavetable will copy in instance.
Change there for waveform.
gOccilator[0]=Occilator::getInstance(OCC_SAW,INTERRUPT_TIME_US);
INTERRUPT_TIME_US depends sampling rate. Don't change.
Total volume of D/A converter is setting this place.
gOccilator[0]->setVolume(volume);
By the way, this sample output 0 to 1V(not3.3V) for deforming distortion.
ToDo
- Envelope generator and LFO(with delay)
- MML(Music Macro Language)
- Sample Song(I will make a Japanese Anime music,perhaps)
Project Goal Date
I will make for Comic Market 90(2016.Aug. in Tokyo).And these thing will be written in a Doujinshi.
Files at revision 10:40bed7449a81
Name | Size | Actions |
---|---|---|
[up] | ||
Noise.cpp | 281 | Revisions Annotate |
Noise.h | 155 | Revisions Annotate |
Occilator.cpp | 2460 | Revisions Annotate |
Occilator.h | 1671 | Revisions Annotate |
Saw.cpp | 277 | Revisions Annotate |
Saw.h | 147 | Revisions Annotate |
Sine.cpp | 282 | Revisions Annotate |
Sine.h | 151 | Revisions Annotate |
Square.cpp | 301 | Revisions Annotate |
Square.h | 210 | Revisions Annotate |
Track.cpp | 0 | Revisions Annotate |
Track.h | 684 | Revisions Annotate |
Triangle.cpp | 292 | Revisions Annotate |
Triangle.h | 167 | Revisions Annotate |
WT.cpp | 596 | Revisions Annotate |
WT.h | 445 | Revisions Annotate |
global.h | 304 | Revisions Annotate |
main.cpp | 1004 | Revisions Annotate |
mbed.bld | 65 | Revisions Annotate |