4U044 - VCFB whether the unit is oscillating

whether the unit is oscillating or processing an external control voltage

For more information about the circuit

Front panel

the gate outputs were fed to the input stages of a multi-state programmer

The lower (lower out) mixes the other bands (29 Hz

4U044 - VCFB whether the unit is oscillating4U044 VCFB The VCFB, or, Voltage Controlled Filterbank is a very interesting and unique module. From an early catalogue: "Upon special request, three or more filters can be linked to achieve the function of multiple band pass spectrum filters (equivalent to voltage control paramteric equalization). Filter banks of thiy type are expectionally versatile because the multiple band pass functions can be dynamically adjusted around any portions of the audio