MATRIXSYNTH: Blacet 2020 Frequency Divider


Sunday, January 06, 2013

Blacet 2020 Frequency Divider

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"The Blacet Frequency Divider is a reissue of the original 1970’s model, with a few enhancements added such as a Dry/Mix control, Level control, selectable output low-pass filtering, and a power up reset for the second divider chain.
The Frequency Divider converts a monophonic analog signal applied to the “IN” jack into digital pulses which are divided by two sections of CMOS digital counters. One section, controlled by the six pots on the right of the module, mixes divisions 1, 1.5, 2, and 3 together to form complex sub octave waveforms. The Level and Mix controls blend these waveforms with the original signal. Low-pass filtering via a PCB dipswitch can be added in three levels if external filtering is not being used. The output signal is present at the lower “OUT” jack.

The second counter section, controlled by the rotary switch on the left of the module, divides the input signal by 2 thru 4096. For example, a 440 Hz signal divided by 4096 would result in a 0.1 Hz signal at the upper two “OUT” jacks. The “RST” input resets the counter to zero."



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