In analog electronics, this is typically built around an operational amplifier configured with multiple input resistors meeting at an inverting node, effectively adding voltages together. In digital logic, it takes the form of cascaded full adders that compute the binary sum of data words. They are fundamental building blocks in audio mixers, control loops, and arithmetic logic units.
Route the pitch and modulation control voltages through a summator before feeding them into the oscillator.
Also heard as
- summing amplifier
- adder
Related terms
Full adder
A digital logic circuit that adds three single-bit binary numbers and outputs a sum and a carry bit.
Half adder
A digital logic circuit that adds two single-bit binary numbers and produces a sum and a carry output.
Arithmetic logic unit
The digital circuit block inside a processor that performs integer math and bitwise operations.