Demonstrating the Telefunken High Com Noise Reduction System

Testing the obscure High Com Noise Reduction System developed by Telefunken in the 70s and 80s, trying to compete with Dolby.

Song: Alan Walker - Fade (License-free NCS Release)
I chose this song as the synthesizer in "Fade" by Alan Walker also shows the weaknesses of a companding Noise Reduction system if it is not adjusted perfectly.

My deck is a TC450M High Com from 1979, the very first High Com equipped deck ever made using a period correct BASF Chromdioxid Super II cassette from the same year.

This is a direct hookup, recorded on my computer's line in jack. That recording has not been tampered with. I have not set the bias on that deck to match the cassette.. Even uses the original belt.

You can download the entire, unedited audio track recorded digitally for your own analysis here: https://drive.google.com/file/d/0B7xY...