Geir Tjelta's echo effect

This feature is a special case of the "D418-volume register" based digi player: But instead of playing a previously recorded digi sample stream, the player reads the respective 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