DiY quick and dirty Sine wave generator to test an Automatic Gain Controller/compressor/peak limiter

In this video i made a sine wave generator with an adjustable frequency and amplitude in order to test an audio compressor/peak limiter circuit that I am working on. While I continue to work on automatic gain control which I will detail in a subsequent video, I needed a way to test it and i built this quick and dirty sine wave generator because the built in function generator of my oscilloscope only gives a 2.5 v peak to peak sine wave since its only a 5 v device. While this is good for small signals and logic circuits, i can’t really test a peak limiting circuit on something thats already peak limited and so i made my own. One of these days, i will make my own robust function generator but for now a quick and easy sine wave generator will suffice. As always, Thanks for watching.
#diy #analog #audio #sinewave #functiongenerator #electronics #function #generator

[AnalogDude_]

Pretty cool.

There is pretty much only one method economic interesting to do agr is using a micro controller with adc, dac, enough opamps.
in some some Arduino library for mpc4921 dac, you can find a math formula for a sine wave. it doesn't take much to figure out how to make the others. however changing speed is a subject.

[AnalogDude_]

i just found: AS6C1616C with is a 16 bit or 2 x 8 bit sram chip, but requires 19 address lines, 16Mb.
using 74HCT245 octal transceivers you can make the 8 bit data bus bi-directional between adc / dac and sram, to shut of the sound while recording.