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Forums > C64 Composing > reverb / delay techniques
2013-12-08 20:05
mstram
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Registered: Dec 2013
Posts: 112
reverb / delay techniques

** warning tracker noob ** :)

How do you do it ?

I'm studying the 'cabrinigreen' tune now.

It looks like the instrument is duplicated, with the duplicated instrument's ADSR values altered ?

Then in the pattern, the note to be "echoed" is duplicated, using the copied instrument.

If that's the basic idea, then how are the ADSR values related to the "size" of the delay, i.e. "hall / room" etc as shown in other sequencers ?
 
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2013-12-10 08:05
Dane
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Registered: May 2002
Posts: 421
Quote: I'm no musician but I've heard methods where they repeat the last 2 or 3 notes, instead of echoing each. sometimes this 2-3 echoed note follows a longer string of unechoed notes. sometimes the whole melody is interleaved 3 note then 3 echo, etc.

Yep, used this technique loads of times, combined with 2 channel echo (when possible) and instruments with built-in echo (like in Jeff's example).
2013-12-11 01:21
iLKke
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Registered: May 2012
Posts: 28
Quoting Groepaz
no. the original speccy only has the beeper - and with that you can only play 1 bit samples :)

There's a lot of things people have done with the crappy speccy beeper over the years.

Check out these sound engines:
http://freestuff.grok.co.uk/beepola/help/tonegen.html
2013-12-11 03:19
SIDWAVE
Account closed

Registered: Apr 2002
Posts: 2238
i
2013-12-11 07:07
Oswald

Registered: Apr 2002
Posts: 5017
beeper & ay/ym is heavily underrated around here.
2013-12-11 09:38
CreaMD

Registered: Dec 2001
Posts: 3034
Quoting Dane
Yep, used this technique loads of times, combined with 2 channel echo (when possible) and instruments with built-in echo (like in Jeff's example).


1. I also love to use this type of echoes using multiple notes. Very subtle.

2. For more intense 1 channel echoes I love to postpone echoed note after the played note..

like this

C
(if the sequence is looped, you can add echoed F here ;-)
D
ECHOED C (lower volume)
E
ECHOED D (lower volume)
F
ECHOED E (lower volume)

3. also stopping the long tone abruptly.. add add echo after pause sound quite cool.. I use that from time to time

P.S.: I love what Tim Follin did with speccy's "BEEPER".. Chronos tune for example.. *INSANE*
2013-12-11 19:35
Hein

Registered: Apr 2004
Posts: 933
A reverb:
Set a short release on an instrument that has gate-on bit set.
Trigger a gate-off in your track and on the tick after the gate off command, set your release to a high value. This results in a fast lowering of volume and before the release cycle is finished you can 'reverb' the sound with the new long-lasting release cycle. Sort of. :)

C-4 01 6f8  <-set SR to F8
---         <-gateoff
       64f  <-set SR to 4F

You can expand this by setting a high attack value and trigger a gate-on further on.

Obviously, the speed of the track influences the outcome.
Some data:
http://www.sid.fi/sidwiki/doku.php?id=sid-knowledge
2013-12-11 22:39
Hate Bush

Registered: Jul 2002
Posts: 453
did you use that technique on a lead channel of 'close but no cigar' or is it the lead/arps frequency clash that creates that fantastic reverb effect? or do both contribute?
2013-12-12 00:08
Hein

Registered: Apr 2004
Posts: 933
That's the combination of the 2 things I guess, the arps going along with the melody filling up the gaps of the melody and track command gate-off in the melody one tick before the next note.

It also helps not to use hardrestart on the melody and chords, giving them the continuous sound whereas the drums n bass are tighter controlled by hardrestart, but its not that tight, the HR ADSR is set to 00F6, so there's an extra bit of release when a new note is triggered.
2013-12-12 14:36
Mixer

Registered: Apr 2008
Posts: 422
use http://www.6581.fi/sidwiki/doku.php?id=sid-knowledge

I no longer update www.sid.fi/sidwiki. It will eventually go away.
2013-12-12 18:26
theWizard
Account closed

Registered: Jul 2007
Posts: 109
2 notes same pitch 1 after 1 call produces a reverb or galway does it with 3 notes in quick progression ( with decreasing volume example wizball or it would eventually wash out ) , in terms of the c64 , 1 vblank then call the same note again will produce a sort of reverb well actually i wouldnt call it a reverb effect more of an early phaser , which player routine are you asking about or you asking in general?
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