PySynth : A toy pure python software synthesizer.

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This slide describes toy software synthesizer. It is made by pure-python, and generates PSG like square-wave form sound from MML.

Technology

Pure Python
Software synthesizer
2011-06-11
Python mini Hack-a-thon #9
at gumi

Who are you?
Ransui Iso @ X-Listing.

I'm Common Lisper,
But use python heavily.

I like Chip-Tune Music very much.
Modern DTM system generates very rich sound,
but the system can't generate PIKO-PIKO
sound well.

So, I made
a toy software synthesizer
to generate PIKO-PIKO sound.

It generates PSG like
square-wave sound.

PSG is 'Programmable Sound Generator”,
which has been commonly use for
computer and game music
In 1980's

Square-wave form is good for PIKO-PIKO sound

Architecture of Synthesizer
Oscillator

Oscillator
MML
Mixer
Interpreter

Oscillator

Oscillator

Raw PCM
binary data

Music Macro Language
● Musical notation scores can translate to MML.
● Note : CDEFGAB and R
● + as #, - as ♭
● Musical Control
● Tempo T
● Volume V
● Octave O
● Default key on length L

How to generate MML to PCM data

MML String

Tokenizer Notation Generator

Sequence of Square Wave
Note instance Generator

RAW PCM
Binary data.

Splitted output module

Software Synthesizer FIFO Output Driver Software

PyQt

Qt Layer
QtMultimedia

OS Layer
ALSA DIrectSound Esound, etc...

Let's see the code!
You can find the python source code at pasetebin.

Raw PCM data generator : http://pastebin.com/h2fxLACS
Sound Output Program : http://pastebin.com/gf0SXULY

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PySynth : A toy pure python software synthesizer.

1. Pure Python Software synthesizer 2011-06-11 Python mini Hack-a-thon #9 at gumi

2. Who are you? Ransui Iso @ X-Listing. I'm Common Lisper, But use python heavily.

3. I like Chip-Tune Music very much. Modern DTM system generates very rich sound, but the system can't generate PIKO-PIKO sound well.

4. So, I made a toy software synthesizer to generate PIKO-PIKO sound.

5. It generates PSG like square-wave sound. PSG is 'Programmable Sound Generator”, which has been commonly use for computer and game music In 1980's

6. Square-wave form is good for PIKO-PIKO sound

7. Architecture of Synthesizer Oscillator Oscillator MML Mixer Interpreter Oscillator Oscillator Raw PCM binary data

8. Music Macro Language ● Musical notation scores can translate to MML. ● Note : CDEFGAB and R ● + as #, - as ♭ ● Musical Control ● Tempo T ● Volume V ● Octave O ● Default key on length L

9. How to generate MML to PCM data MML String Tokenizer Notation Generator Sequence of Square Wave Note instance Generator RAW PCM Binary data.

10. Splitted output module Software Synthesizer FIFO Output Driver Software PyQt Qt Layer QtMultimedia OS Layer ALSA DIrectSound Esound, etc...

11. Let's see the code! You can find the python source code at pasetebin. Raw PCM data generator : http://pastebin.com/h2fxLACS Sound Output Program : http://pastebin.com/gf0SXULY

12. DEMO Have you heard of this?

13. Thank you for LISTNING Happy Hacking!!

PySynth : A toy pure python software synthesizer.

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