MODULE 2140 - RESONANT FILTER

The 2140 Resonant Filter is an audio filter with an output mixer capable of producing virtually any two pole pass characteristic. The setting of the frequency control determines the filter center frequency, which can be varied from 20 Hz to 20kHz. A resonant peak may be added to the response by the Q control. The height of this peak is variable from zero to » +40 dB. The output mixer sums the simultaneous filter functions to produce a single output. An incredibly wide variety of responses can be produced, a few of which are shown below. Several 2140’s can be cascaded in series/ parallel combinations to produce interesting complex resonant formants. Lower input levels should be used at high Q’s to prevent clipping.

For a detailed description of the modulation possibilities available with the 2140 module, please refer to the section dedicated to the 2145 module.