Doepfer A-129-1/2 Vocoder Basic Modules Uživatelský manuál stáhnout pdf

doepfer

System A - 100

Modular Vocoder

A-129 /1/2

1. Introduction

The A-129 /x series of modules forms a modular

vocoder. ‘Vocoder’ is an abbreviation of ‘voice coder’.

The basic components are an analysis section

(A-129 /1) and a synthesis section (A-129 /2).

Like a ring modulator, the vocoder needs two input

signals: a speech element which serves as the raw

material for the tonal shaping, and is patched into the

analysis section; and a

carrier signal

, which is pat-

ched via the instrument input into the synthesis sec-

tion.

The speech signal is chopped up and analysed in the

A-129/1 module, and then combined with the carrier

signal in the A-129/2 synthesis section. As a result of

this procedure, the carrier signal assumes the tonal

character of the speech signal, but with its own pitch

maintained.

Since the A-129 is a modular vocoder, and the

connections between the analysis and synthesis sec-

tion are external, using patch-leads, you can use this

interface to

patch in

your choice of

modules

(eg.

attenuator, slew limiter, CV-to-MIDI / MIDI-to-CV inter-

faces,, inverter, etc.).

The

Five-way VC slew limiter / offset generator /

attenuators (A-129 /3) and Slew controllers (A-

129/4) are particularly designed for this purpose.

There’s also the possibility of connecting the frequency

bands of the analysis and synthesis sections arbitra-

rily, so that, for instance, a low frequency band in the

speech signal can control a high frequency band in the

carrier signal.

The

Voiced / unvoiced detector

(

A-129 /5

)

can re-

cognise voiced and unvoiced sections in the speech

signal, and switch the carrier signal accordingly.

The A-129 /2 synthesis section can also be used as a

stand-alone voltage-controlled filter bank (see

chapter 6, User examples).

1 2 3 4 5 6 7 8 9 10

Shrnutí obsahu

Strany 1 - 1. Introduction

doepferSystem A - 100Modular Vocoder A-129 /1/211. IntroductionThe A-129 /x series of modules forms a modularvocoder. ‘Vocoder’ is an abbreviation

Strany 2 - A-129 /1

A-129 /1/2 Modular VocoderSystem A - 100doepfer10Using with the other modules ( /3, /4, /5)While extremely usable vocoder sounds can be produ-ced wi

Strany 3

A-129 /1/2 Modular VocoderSystem A - 100doepfer22. A-129 /1, /2 - OverviewA-129 /2 VOC-SBand 1Low PassBand 2Band 3Band 4Band 5Band 6Band 7Band

Strany 4 - 3. Basic principles

doepferSystem A - 100Modular Vocoder A-129 /1/23In / Outputs:A-129 /1! Speech In : Input for the speech signal" CV Outputs : 15 CV outputs w

Strany 5 - 4. In / Outputs

A-129 /1/2 Modular VocoderSystem A - 100doepfer43. Basic principlesThe fundamental modules in this vocoder are theanalysis section A-129 /1 and the

Strany 6

doepferSystem A - 100Modular Vocoder A-129 /1/25H In most standard vocoders the voltage si-gnals from the analysis section are fedstraight into the

Strany 7 - 5. User examples

A-129 /1/2 Modular VocoderSystem A - 100doepfer6§ High PassSocket § on the analysis section is the high passfilter output. Unlike the other sockets

Strany 8

doepferSystem A - 100Modular Vocoder A-129 /1/275. User examplesBasic principlesTo get the best results from the vocoder, it’s essentialto take not

Strany 9 - Rhythmic trigger

A-129 /1/2 Modular VocoderSystem A - 100doepfer8Using just the basic modulesJust with the A-129 /1 and A-129 /2 modules (and anA-119 external input)

Strany 10 - Modular Vocoder

doepferSystem A - 100Modular Vocoder A-129 /1/29Fig. 3: "Frequency displacement""Chopped up” speechThe patch in Fig. 4 produces chopp

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