Hi everyone. I am bulding a theremin device which can work with camera and a Python code. Camera will dedect hands position and will produce amplitude and frequency signal to output to code. I having plan to run code in my computer. It produce sound in computer but I need to generate this signals on physical circuits. There are oscilator and amplifier circuit too. I wonder how will I seperate this two signal and send to my amplifier and oscilator circuit?

 

If the audio is digital there are digital to analog amplifier modules for the sound.
Don't understand why the oscillator signal needs to be exported if it's in code in the Python.

 

If the audio is digital there are digital to analog amplifier modules for the sound.
Don't understand why the oscillator signal needs to be exported if it's in code in the Python.

Thank you, prof want to see amplifier and oscilator circuit. Do you mean DAC? I plan to amplifier make with a digipot. I couldn't solve how I will send amplitude signal to amplifier.

 

Thank you, prof want to see amplifier and oscilator circuit. Do you mean DAC? I plan to amplifier make with a digipot. I couldn't solve how I will send amplitude signal to amplifier.

Yes a DAC.
The prof needs to see actual circuits or just schematics?

 

OK, for the amplitude control to be available as a linear continuously variable signal you will either need to provide it as a high resolution variable frequency on the other sound card channel, or as a constant frequency variable amplitude signal on the second channel, and then use a "precision rectifier " circuit to recover the amplitude value as a DC control level.
The level control will be much simpler to program, and the rectifier circuit is a classic in the public domain.