This is effect is originally made by Kyoobur9000 (Benjamin Kaufold).

In Audacity, import your audio clip. Go to the Plugin Manager, and the click the plugin Timemachine to. Then apply it to your audio clip with a bit depth of 8 and a sample rate of 1503Hz, then you apply the dithering and muLaw.

In Kdenlive, make sure to add the distort effect, with an amplitude of 200 and a frequency of 30. Then add scratchlines, with a line size of 92 and a maximum number of lines of 100. Then add Technicolour with the default settings. Finally, add Grain with a noise level of 60% and a brightness of 100.