How can I make a very simple FSK(Frequency Shift Key) generator?

Processing Coding Questions
#1

I’m trying to make a very bare bones replica of a linux program(I use windows so I can’t use it) called minimodem.

What I’m trying to replicate is the part at 18 seconds, the transmitting part: youtube.com/watch?v=pwuyMJfyNmY

How would I go about creating a function that I can enter a string of text into and then it translates it to FSK modulation, at a baud rate that’s changeable, and then play it? Is that even possible in processing? Thanks.

1 Like
#2

Hi 8bit_coder,

I would use the charAt() function.

In your draw loop, you first get the first character and a rectangle next to it.
Then you draw the first 2 characters and a rectangle next to it.
And so on and so on…

Try something by yourself and come back if you are stuck somewhere, you’ll get more answers :slight_smile:

1 Like
#3

Cool project concept.

Are you planning on using the minim library or the Sound library?

#4

I’m trying to use Minim to make it

#5

Great!

What are the project details for the design – e.g. do you have a lookup table for which character should be what frequency? Do you know what the per-character duration should be?

If you are looking to generate tones, you might want to look at ugens

specifically: