Vocoder Voiced / Unvoiced Detector

Note: Per Doepfer's A-129 Vocoder-Subsystem page, the A-129 series is no longer available.

The Voiced / unvoiced detector (A-129/5) can recognise voiced and unvoiced sections in the speech signal, and switch the carrier signal accordingly. The incoming speech signal is processed through a pre-amplifier with adjustable gain and a treble boost unit. The treble boost improves the vocoder effect. The voiced/unvoiced recognition system controls a voltage controlled switch (like A-150) which is used to switch between the voiced and unvoiced carrier signal (e.g. VCO and Noise). Additionally the voiced/unvoiced information is available a a gate signal. A LED displays the unvoiced state.

For more detailed information please look at the English user's manual: http://www.doepfer.de/a100_man/A1295man.pdf


  • 30 mA +12V
  • ? mA -12V
  • 0 mA 5V
  • 45 mm deep
  • Ø 3.50 (2 Votes) Average Rating

This Module is discontinued.

$99 Price in € submitted Oct 6th 2012, 13:36 by CitizenKlaus | last Change Jun 19th 2017, 13:06 by modulargrid

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