The document provides an introduction to ToySynth, a pure Python software synthesizer discussed at the 2012 Python Conference. It explains the components of ToySynth, including its simple architecture, limited performance, and features for generating sound, such as a music macro language and sequencing capabilities. Users can download the software via a provided link and explore creating their own sound modules.

1. Introduction about ToySynth
Pure Python Software
Synthesizer
2012-09-16
Python Conference JP 2012 Open Space Session
Ransui Iso
Strategic Technology R&D / X-Listing Co, Ltd.
Copyright (c) 2011 Ransui Iso, All rights reserved.

3. First, I play a music
that generated by ToySynth.
Copyright (c) 2011 Ransui Iso, All rights reserved.

4. Johann Sebastian Bach
March 21, 1685 – July 28, 1750
Copyright (c) 2011 Ransui Iso, All rights reserved.

5. ToySynth.
●
Only 2 python modules.
– Components.py
– Sequencer.py
●
Pure python.
– Just use standard python libraries.
– It has simple archtecture, easy to learn.
– Poor performance.
●
It doesn't have a real-time rendering speed to make sound
data.
Copyright (c) 2011 Ransui Iso, All rights reserved.

6. How to get ToySynth.
●
You can download a tiny zip file.
http://alpa.homeip.net/files/PyConJP2012/ToySynth.zip
Copyright (c) 2011 Ransui Iso, All rights reserved.

7. Components.py
●
Component module provides some classes to make
a sound.
– Oscillator
– Amplifier
– Mixer
– FrequencyModulator
– LFO
– Clock
– Renderer
– Sink
– Etc ...
Copyright (c) 2011 Ransui Iso, All rights reserved.

9. Music Macro Language
●
Code system for write musical notation.
t120o4l4cdefedcrefgagfe4
t120o4l4cdefedcrefgagfe4
crcrcrcrl8ccddeeffl4edcr
crcrcrcrl8ccddeeffl4edcr
Copyright (c) 2011 Ransui Iso, All rights reserved.

10. MMLCompiler
●
It's in Sequencer module.
– It convert MML string to byte-code.
– Case insensitive.
– White space is now allowed.
– Poor lexer.
– Only support basic features.
Copyright (c) 2011 Ransui Iso, All rights reserved.

11. Sequencer
●
Executes music byte-code sequence.
Set frequency at specified timing
WaveFile
osc Sequencer Renderer
Sink
MML
Clock
Compiler Music byte-code sequence.
Copyright (c) 2011 Ransui Iso, All rights reserved.

12. Make your own sound module
●
Vibrato.
base_osc = SineWaveOscillator()
base_osc = SineWaveOscillator()
diff_osc = SineWaveOscillator()
diff_osc = SineWaveOscillator()
Frequency diff_osc.frequency=10.0
diff_osc.frequency=10.0
osc Modulator
viv_amp = Amplifeir(
viv_amp = Amplifeir(
source=diff_osc,
source=diff_osc,
gain=2.0,
gain=2.0,
Attenuate=1.0)
Attenuate=1.0)
viv_osc = FrequencyModulator(
viv_osc = FrequencyModulator(
source=base_osc,
source=base_osc,
diff=viv_amp)
diff=viv_amp)
osc amp
frequency : frequency of vibrato.
Gain parameter in amp. : depth of vivrato.
Copyright (c) 2011 Ransui Iso, All rights reserved.

15. Thank you for listening.
Happy Hacking with Python!
Copyright (c) 2011 Ransui Iso, All rights reserved.