AETHERPHON, global theremin family

To follow up, I did a little googling and found an interesting post on  
the topic:

http://www.loopers-delight.com/LDarchive/200602/msg00733.html

They are discussing that you can hook a volume pedal into the feedback  
loop to control the amount of feedback in real time.

One way to consider the difference between "Overdub" and "Replace"  
mode is to think back to the design of the old tape delays wherein the  
tape passed by: 1) an erase head, 2) a recording head, and 3) a  
playback head.  (the speed of the loop and/or the distance between the  
recording and playback head determines the delay time.

The "Replace" mode is the "traditional" mode wherein the erase head is  
"on".  "Overdub" mode would be analogous to turning the erase head  
"off", thus rendering a "sound-on-sound" effect.

Of course, the digital overdub results in a clean copy on every pass  
unlike an analog "sound-on-sound".

I forgot to mention that you would use the "Replace" mode along with  
feedback to create the fading loops effect.

Hope this is useful!

-- Kevin



Quoting kkissinger@...:

> Hi!
>
> This topic is a good one and has had me scratching my head for a few
> days since reading about this issue on TW.  I own an RC50 loop station
> and it has two modes of looping, namely "Overdub" and "Replace".
>
> In "Overdub" mode, as the loop repeats one can overdub -- that is add
> the live material to the loop.  The RC50 apparently has a pretty good
> algorithm for keeping the old material from "fading" into the mix --
> my hunch is that the RC50 averages the sound rather than mixes it
> algebraically.  The point is that "Overdub" mode keeps each pass of
> the loop indefinately.
>
> In "Replace" mode, the loop repeats and you are replacing the contents
> of the loop with new material while the old material plays.  Yes, this
> is a little "weird":  You play material on the track, the material
> plays back while you record along with the track, then the new
> material plays back on the next pass -- that is, only the most
> recently recorded track is repeated.
>
> The difficulty is to have a loop that works similar to the old
> echoplex tape loop where a track becomes successively softer on each
> iteration of the loop.  This is accomplished by mixing a portion of
> the looper's output to the looper's input.
>
> Since the RC-50 has a built-in mixer, you could accomplish the "fading
> track" as follows:  (this example for a mono loop)
>
> 1) patch the Theremin's output to the looper's instrument input (the
> input has its own input level so you should be able to back it off if
> need be)
>
> 2) Assign the loop track's output to both the main and sub output busses.
>
> 3) Connect a patch cord from the sub output to the line input.
>
> 4) Adjust the line input level -- a the higher the level, the longer
> it takes for the track to fade out.
>
> Note that this method takes you out of the digital domain, so you will
> get analog loop artifacts (noise buildup, etc) which may or may not be
> a problem depending on the effect you want.
>
> Of course, with a small external mixer, one could get into more
> elaborate schemes with ping-pongs and effects in the echo loop.
>
> Even with a simple loop station, the key to a track fading out with
> each pass is feedback -- that is, you take part of the output signal
> and mix it back into the input.
>
> I, too want the option of successively fading loops, and this solution
> should work.  Anyway, I worked out this solution while sitting at my
> desk (day job) and I'm looking forward to running home and playing
> around with this.
>
> -- Kevin
>
>
> Quoting Oscar <oscar@thereminhispano.com>:
>
>>  Hi people!
>>
>> AS I am asking everywhere else, I am looking for any pedal/group of pedals
>> to achieve the effect of "constant decaying layers" Pamelia uses. I know She
>> uses a DL4, but there must be better choices at the market.
>>
>> TO explain what I am looking for, look this video of the violinist Ed
>> Alleyne Johnson:
>>
>> http://www.youtube.com/watch?v=2fHOwTp0gXs
>>
>> Anyone here knows any delay/looper unit able to make this effect?
>> I mean, with enough seconds ver loop to play a melody and harmonize it.
>>
>> Thanks guys!
>>
>> Óscar
>>
>>
>>
>> SPELLBOUND-L, the glocal thereminist community
>>
>> To contact the moderator, e-mail porphyrous@...
>>
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>
>
>
>
> SPELLBOUND-L, the glocal thereminist community
>
> To contact the moderator, e-mail porphyrous@...
>
>
>
> Yahoo! Groups Links
>
>
>
>