Modeling/designing a quasi-peak (digital) detector

[MPM]

There is a need and desire to try to simulate a digital quasi-peak detector. In the Internet I found very little information (mostly articles), which, moreover, implies experience and knowledge. Many textbooks contain only the definition of quasi-peak detector and its circuit. Maybe someone can suggest modern literature on this topic? Or maybe there are ready-made models on the Internet (Simulink, although I have not found any:))?