hi, I remembered this http://www.soundonsound.com/sos/Feb02/articles/synthsecrets0202.asp
and just now I found this http://kurtjameswerner.tumblr.com/post/50274769999/chuck-tr-808-emulator-bass-drum-bd-emulation

The amplitude envelope should also be exponential probably

Each line should end in a semicolon to separate them, not a carriage return. If you have carriage returns instead of semicolons in the file, you can load it using the cr option:

[read <filename> cr(

This will treat the carriage returns as semicolons.

im having a lot of trouble myself emulating that one "CRACK" sound that you get slamming the stick down so it "whips" on the edge of the rim, and smacks real hard into the head.

snare emulation definitely is not trivial.

Hey fellas!
Presenting my first complete patch, but a pretty useful one (at least for me!).

Quark is an aleatoric midi sequencer which at a given tempo plays notes, randomly taken from a selected musical scale. Additional randomization options are available, such as volume, note duration and even dynamic scale changes. All open instances of the sequencer can be synced to each other and can additionally trigger Hydrogen to play in sync.

Quark was created to be used in a modular audio environment of a GNU/Linux system. On other systems sync between sequencer instances and Hydrogen might have little meaning. Quark was tested on GNU/Linux only.
From Pd perspective, the patch uses basic objects, but visually is a little messy. It is one of my first patches and by the time I found out about subpatches and abstractions, it was easier to leave it as it is. At the same time it is not a big patch at all, fitting on a laptop screen, and important sections are commented.

For full description of how it works, venture here:
http://www.louigiverona.ru/?page=projects&s=software&t=puredata&a=puredata_quark

http://www.pdpatchrepo.info/hurleur/Quark.pd

Basically you want to create an oscillator (bandlimited) then feed that through a resonant filter, then to your speakers.
Bear in mind lop~ isn't resonant, other people have created externals that are, or there is the moog~, although this will sound nothing like the monotron filter, from what I remember Korgs might be 12dB/octave (might be wrong!). Good luck in designing your own Analogue modeling filter, I tried and it was solid!

To replicate the monotron ribbon controller, it's probably simplest to control the frequency of the oscillator
create another oscillator (a simple sine wave), this will be your LFO. connect that up to either filter cutoff or amplitude
Amplitude would require you to multiply the output of your main oscillator by the output of LFO
Cutoff would mean multiplying the LFO output by The value you are inputting into your filter cutoff input.
You could incorporate a button switch so you could flick between them like the monotron

It is a very simple synth to emulate, I recommend reading this site to explain the basics of subtractive synthesis in PD , it also mentions bandlimited oscillators, which will stop them aliasing THIS IS VERY IMPORTANT!

http://en.flossmanuals.net/pure-data

A guy from this forum also wrote this site
http://obiwannabe.co.uk/html/music/6SS/six-simple-synthesisers.html

You will soon grow bored of replicating the monotron, and move into doing minimoog replications, and maybe even modular stuff.
I saw a video of someone who did a Swarmatron replication, very impressive. Wish I had that patch...

Hi,

I'm fairly new to designing synthetizer with Pure Data and I was wondering if you could help with this undertaking of reproducing the basic fonctionalities of a Monotron with Pure Data, which is a small analog synthetizer that reproduces vintage synth sounds, as described here : http://www.korg.com/monotron. The page also contains the basic schematics, the full schematics are available here.

I've began to grasp what are oscillators, VCF and LFOs, but I still don't understand quite well how to plug them all together to emulate the analog circuitry of the synth. Understand that I don't want to absolutely reproduce the Monotron: a simple, vintage sounding synth would be a good start.

Thank you for your time.

Why not try out Pd Vst and email the developer?
http://crca.ucsd.edu/~jsarlo/pdvst/

@purewater said:

No one knows huh?

What do you expect after four hours?

Are you trying to emulate the sound, or emulate the music theory (the scales, and rhythms associated with Indian music)

if it's to emulate the sound, you'll need to familiarize yourself with the physics of the instrument. how it generates it's sound and what gives it it's tone. This is not easy.

You may want to begin with some of Obiwannabe's tutorials on synthesizing other sounds in Pd, which will give you a feel for how you need to approach this task.

http://obiwannabe.co.uk/tutorials/html/tutorials_main.html

of course another way to do this is to create a sampler that triggers recorded samples of a raga. A search of this forum for samplers should get you started.

you can emulate vynil cracks on Reason using the Noise Oscillator on the thor synthesizer using static and sending random note on messages to the gate, it sounds a lot like vynil cracks if you want i can send you a combinator patch.

i havent tried to emulate this on PD...

http://crca.ucsd.edu/~msp/techniques/latest/book-html/node111.html

cha-ching! i'm just saying spend a minute or two with puckette's book, it's some good shit

http://crca.ucsd.edu/~msp/techniques/latest/book-html/node124.html