Doepfer

Hello everybody. What is the most usual way of processing an external signal, such as a guitar or drum machine, using the A-100 filters. Do I need a special module with an external audio input? 

Thank you,
Sidney

Hi Sidney,

 

The A-119 External Input module will be very helpful in getting the signal
into the Doepfer. What you then do with it is really up to you and your
style of music. You can use a filter of your choice to subtle or drastic
effect, maybe liven it up with a LFO. Take a wave shaper (A-136 / A-137) if
you want distortion, a BBD module (A-188 range) for sounds ranging from mild
flanging to total destruction or more traditional modules like the A-199
spring reverb or the A-125 or A-101-3 phasers. 

 

Hope this helps,

 

York

 

  _____  

Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] Im
Auftrag von sidney.honi
Gesendet: Sonntag, 18. Juli 2010 03:46
An: Doepfer_a100@yahoogroups.com
Betreff: [Doepfer_a100] External signal processing

 

  

Hello everybody. What is the most usual way of processing an external
signal, such as a guitar or drum machine, using the A-100 filters. Do I need
a special module with an external audio input? 

Thank you,
Sidney





[Non-text portions of this message have been removed]

Hi York. It helped a lot. In fact I am still planning an A-100 system after I've seen some Doepfer sound clips and videos. Also read about some analog synths that were used to process external audio. Seems that the A-100 is capable of this kind of processing that  opens many interesting possibilities. I am putting the A-119 in my A-100 modules list. 

Thank you,

Sidney

--- In Doepfer_a100@yahoogroups.com, "York Luethje" <ybl@...> wrote:

>
> Hi Sidney,
> 
>  
> 
> The A-119 External Input module will be very helpful in getting the signal
> into the Doepfer. What you then do with it is really up to you and your
> style of music. You can use a filter of your choice to subtle or drastic
> effect, maybe liven it up with a LFO. Take a wave shaper (A-136 / A-137) if
> you want distortion, a BBD module (A-188 range) for sounds ranging from mild
> flanging to total destruction or more traditional modules like the A-199
> spring reverb or the A-125 or A-101-3 phasers. 
> 
>  
> 
> Hope this helps,
> 
>  
> 
> York
> 
>  
> 
>   _____  
> 
> Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] Im
> Auftrag von sidney.honi
> Gesendet: Sonntag, 18. Juli 2010 03:46
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] External signal processing
> 
>  
> 
>   
> 
> Hello everybody. What is the most usual way of processing an external
> signal, such as a guitar or drum machine, using the A-100 filters. Do I need
> a special module with an external audio input? 
> 
> Thank you,
> Sidney
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

Hi Sidney

> Hello everybody. What is the most usual way of processing an external signal, such as a guitar or drum machine, using the A-100 filters. Do I need a special module with an external audio input? 

My answer is  a little late - I was travelling for three weeks.

There are two aspects on the signal that you should obey:
1.) The (guitar-)signal as an source for modulation
2.) The (guitar-)signal as an audio signal to be worked on

The signal #1 should be as much dynamic as possible.
The signal #2 most times should be as less dynamic as possible (keep in 
mind: a standard source signal in the modular system like a VCO isn't 
dynamic at all!).

The A-119 (which york luethje recommended) is mostly thinking about the 
signal #1. It amplifies the incoming signal to a suitable average level. 
Then it derives an evelope voltage from the level of the signal (which 
can be used to control a filter in the mannor of an auto wah), and also 
it derives a gate signal, which again can be used for triggering 
standard envelopes, S&H-circuits, ... etc pp.

You should always consider to use an audio compressor for the signal #2 
because it reduces the dynamic of the original signal.

So in fact you might end with the following cabling setup example for a 
autowah:
* Guitar -> input of A119
* audioout of A119 -> input of some compressor
* output of your compressor -> VCF audio input (this is signal #2)
* envelope out of A119 -> VCF control input (this derived from signal #1)
Of course an autowah is a stupid example, but it explains the basic 
principle.

You also may achieve the function an audio compressor also with a 
combination of three or four A-100 modules. But this would be wasting 
money to my opinion, because any typical compressor (eg. the Alesis 
3630) out there is cheaper than two A100 modules.


Florian