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System A - 100

Voiced/Unvoiced Detector

A-129 /5

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.

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

Input

Voiced

Input

Summary of content (6 pages)

PAGE 1
System A - 100 doepfer Voiced/Unvoiced Detector A-129 /5 1. Introduction A-129 /5 Voiced/Unvoiced Detec. Speech Input Gain Speech Output Treble Boost Gate Output Unvoiced Input Unvoiced Voiced Input Voiced / Unvoiced Output 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 modular vocoder.
PAGE 2
A-129 /5 Voiced/Unvoiced Detector System A - 100 2. Voiced/Unvoiced Detector overview Controls: 1 Gain : A-129 /5 VUV Gain Speech Output 0 10 0 10 ➀ ➁ Gate Output Treble Boost Unvoiced Unvoiced Input Voiced Input Voiced / Unvoiced Output 2 gain control for the speech input signal patched into socket ! 2 Treble Boost : control to increase the treble content of the speech input signal Voiced / Unvoiced Detec.
PAGE 3
System A - 100 doepfer Voiced/Unvoiced Detector A-129 /5 3. Controls 4. In / Outputs 1 Gain ! Speech Input Use control 1 to set the level of input gain for the speech signal at socket !. The speech signal is patched into Speech-input !. 2 Treble Boost " Speech Output Control 2 is used to increase the level of the high frequencies in the speech signal input. Often, using this control makes speech more easily intelligible.
PAGE 4
A-129 /5 Voiced/Unvoiced Detector System A - 100 doepfer $ Unvoiced Input 5. User examples This unvoiced carrier signal input $ is used to patch in the sound source you wish to use for the carrier signal for unvoiced sounds. Vocoder block diagram including A-129 /5 As a rule, you’d tend to use the output from a noise module (A-117, A-118), a high-frequency sawtooth wave, or the 6 Oscillator output from an A-117 module.
PAGE 5
System A - 100 doepfer A-119 A-117 A-118 Freeze Contr. Input Speech Gain Input Speech Treb. Output Boost Slew CV A-129 /5 Unvoiced In Unv./Voic. Out Speech LP In BP 1 BP 2 A-129 /1 fig. 2: Man. Slew Rate Follow Slew Freeze Slew Control Out Atten. High Out A-129 /5 A-129 /4 Voiced In A-110 A-111 Voiced/Unvoiced Detector Slew Contr. In CV In 1 CV Out 1 Offset A-129 /3 LP BP 1 Instr. In BP 2 Voc.
PAGE 6
A-129 /5 6 Voiced/Unvoiced Detector System A - 100 doepfer