1/19/2008
Copyright
2005 – Tim Hoerning
42
Echo
•Often there is no distinction between delay units and
echoes. What usually makes a device more of an echo is how it
attempts to simulate a
tape echo
–The feedback gain can be increased to be greater than
unity. This will cause the echoes to increase in volume and eventually
saturate or oscillate
–The is some times a filter in the feedback loop to
simulate the gradual deterioration
of signal quality that would occur with a tape-echo unit.
–Sometimes the delay time is varied slightly to simulate
tape warble.
Input
Delay
+
Delay Mix
+
Feedback Gain - Regeneration
Filter
