Audio peak limiter with “tub sound”

[ronsimpson]

Audio peak limiter with “tube sound”

I am working on audio processing again.
Some people like the “warm sound” of a tube, or the “analog” sound of R-R tape, or some people claim they can hear “input transformer sound”. I am not here to argue the merits of this.
I need a soft peak limiter that is similar to a tube amp, with out the tube! I have an adjustable peak limiter working that is not soft enough.
Question: Have any of you made a “tube effect” using solid state? How? Advice! Thanks.

 

[audioguru]

You say TUB but do you mean Vacuum Tube? (TOOB)
They had high even hormonics distortion and soft clipping.

An opamp has soft clipping when a diode is in the negative feedback path.

 

[Sceadwian]

**broken link removed**

Google is your friend.

 

[audioguru]

The diodes give fuzz distortion beginning at 20% of max output power.

 

[Sceadwian]

So just make sure the audio signal is very low current. Buffer it if need be. Though audioguru would know best if there's a simpler circuit to do this than I.

 

[audioguru]

The same site has a low distortion Fast Peak Limiter circuit for people who don't like the distortion added by vacuum tubes:
**broken link removed**

 

[mneary]

Tub sound? Do you mean shower sound?