Simple SPL

A static library for VisualAge C++ v4 that handles digital signal processing, it is specifically designed for radio exploration but should have applications in any audio related signal processing, and is surprisingly well featured considering its age.

Features

Filters

low pass, high pass, band pass, band stop, 'mediana' filters (min/med/max amplitude), simple equalizer

Spectrum

FHT (with accumulation)

Oscillators

sine/cosine, white noise, pink noise, On/Off pulser

Helper functions set

including simple auto calculation of LPF/HPF by desired slope (dB/oct)

Addons

AM detectors (1/2 half-period), amplifier, input wave window reverse

Effects

fade in/out (linear/exponential)

Version

• Simple SPL 1.0.0 (2002-04-16) - vyxsspl-1.0.0.zip

Links

• A copy of the original SSPL homepage - Via Archive.org

Licence

• Closed source freeware
• Author: Vadim Yegorov