Hi, I’m attempting to simulate the strange distortion that these sirens have. The speaker drivers are compression drivers.
Voices have a weird buzzy like tone above the base frequency.
The actual siren tone is a square wave, but the distortion adds harmonics that make it sound different.
I have tried things like a highpass(1000hz)+half wave rectification, it makes the square wave sound ok, but the voices sound off.
I also tried a slew rate limiter E.X. “snd-congen track 0 (/ 1.0 4000))”
But it still sounds off, and adds harmonics below the voice’s base frequency.