Doepfer A-129-5 Vocoder Voiced/Unvoiced Detector User Manual
System a - 100, A-129 /5, Introduction
doepfer
System A - 100
Voiced/Unvoiced Detector
A-129 /5
1
1. Introduction
The A-129 /x series of modules, whose essential
component parts are the A-129 /1 (analysis section)
and A-129 /2 (synthesis section), builds into a modu-
lar vocoder.
Module A-129 /5 (Voiced / Unvoiced Detector) enab-
les the vocoder to distinguish between voiced sounds
and unvoiced sounds - i.e consonants like s, sh, v, f
and z - and to switch between two different carrier
signals to send to the instrument input in module
A-129 /2.
Module A-129 /5 has an adjustable gain control for
the speech signal. There’s also an adjustable treble
boost control, to help speech intelligibility where
desired.
A gate output with associated LED indicator (whose
brightness is proportional to the amount of unvoiced
signal detected) offers further help in the sound-
making process.
A-129 /5
Voiced/Unvoiced Detec.
Gain
Treble
Boost
Speech
Output
Speech
Input
Gate
Output
Voiced / Unvoiced Output
Unvoiced
Unvoiced
Input
Voiced
Input
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