Geir Tjelta's echo effect

This page illustrates a special case of a "D418/volume register" based digi-samples player: But instead of playing a previously recorded sample buffer, the player reads the output of the regular 3rd SID voice (waveform & envelope) and uses that as a base for the dynamically generated "digi-output" - thus creating an echo effect from whatever is playing on voice 3.

• Black Keys Matter
• Sub Hunter Highscore echoed
• Echofied 6581

SID chip voices (including effect of the filter)

SID volume setting (the voice 3 data used as a base did not pass through the filter)