inklen
Full Member level 1
So, as some of you may know (and thank you guys!) I built - finally - a mic preamp and it works like a charm. It has a gain ~60dB. But now what I'd like to do is to have this gain "dynamic". I mean, when there's low level SPL let the preamp work at its maximum but when the input signal is "loud" the preamp would better lower its "amplification ability" to keep the output at the proper level (and not clipped).
I'm trying to read books and I only finished ones for beginners where opamps are just touched. And I'm curious how to solve this. One idea (probably weird) is to have 2 mics and 2 pramps on the same board/circuit and have different gain ratios (different feedback resistors). In this case the sum of two signals could be somehow mixed. But I'm not sure.
I'm sure this has been done before. I'd appreciate any articles and circuits just to have an idea how it should be done.
Thank you!
I'm trying to read books and I only finished ones for beginners where opamps are just touched. And I'm curious how to solve this. One idea (probably weird) is to have 2 mics and 2 pramps on the same board/circuit and have different gain ratios (different feedback resistors). In this case the sum of two signals could be somehow mixed. But I'm not sure.
I'm sure this has been done before. I'd appreciate any articles and circuits just to have an idea how it should be done.
Thank you!