Doepfer A-167 Analog Comparator

Doepfer A-167 Analog Comparator creates a gate signal out of two input signals. Depending on the higher level signal, a gate output is created: so for example you can create on-off signals by the level of two LFO's, audio signals, or basically any input signal.

€64.80
Availability: In stock
SKU
A-167
Doepfer A-167 Analog Comparator is available to buy in increments of 1

Doepfer A-167 Analog Comparator creates a gate signal out of two input signals. Depending on the higher level signal, a gate output is created: so for example you can create on-off signals by the level of two LFO's, audio signals, or basically any input signal.


Doepfer A-167 Analog Comparator is a module that compares analog voltages and derives a gate signal. The state of the gate output (low/high) depends upon which of the voltages is higher. It is possible to compare two external voltages (+In and -In) or an external voltage (+In or -In) with a manually adjustable value (Offs. control). Both analog inputs +In and -In are equipped with an attenuator. Internally the module generates the voltage k1*(+In) - k2*(-In) + Offset and und sets or resets the gate output depending on the result of this internal voltage (>0V or The Gap control is used to adjust a so-called "hysteresis". As long as this control is set to zero the switching levels for both on and off state of the gate signal are identical. As soon as the Gap control is turned up the switching levels for on and off state fall apart and a so-called hysteresis appears. The sketch at the bottom of this page shows the Gap function.


Normal and inverted gate outputs are available. In addition the internal voltage k1*(+In) - k2*(-In) + Offset is available at the Analog Sum socket. Consequently the module can be used as subtractor and offset generator too.


Applications: Generation of gate signals depending upon analog voltages. E.g. a gate signal that depends upon the present value of a LFO (triangle), ADSR or random signal can be generated and used to control a voltage controlled switch that on the other hand switches different control voltages or audio signals. The module can even be used to add the free-running mode to each ADSR ,e.g. A-140 similar to a LFO but with separate controls for rising and falling edge and exponential waveforms - in contrast to the linear waveforms of a LFO. See the patch examples below.


For more detailed information please look at the English user's manual

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