Ingo,

Excellent stuff.

Many thanks

David

David Salter
Senior Project Manager
Reuters Ltd
Tel +44 20 7542 2402
Mob +44 7990562402
email david.salter@...
RM david.salter.reuters@...



________________________________

From: Doepfer_a100@yahoogroups.com [mailto: Doepfer_a100@yahoogroups.com ]
On Behalf Of selfoscillate
Sent: 10 April 2006 08:06
To: Doepfer_a100@yahoogroups.com
Subject: 1 more bbd examples, now with 256 and 512 stages



hello altogether,

here are some more a188/1 bbd module sound examples,
this time with mn3209 (256 stages) and mn3204 (512 stages).


part 1:

the simplified audio path is: vco -> vca -> bbd -> out

the vco is an a110, playing a 16 note sequence.
the vca is an a131, controlled by an a143/2 adsr envelope.
first you hear the dry bbd input signal, then the bbd output.

1.
another 16 step sequence modulates the delay time.
a110 waveform is triangle. the feedback on the
512 stages example is inverted.

http://www.selfoscillate.de/a100files/a188-1-256-sequenced1.mp3
file size: 346 kb.

http://www.selfoscillate.de/a100files/a188-1-512-sequenced1.mp3
file size: 349 kb.


2.
same as above, but with a different sequence for the delay time.
feedback is inverted.

http://www.selfoscillate.de/a100files/a188-1-256-sequenced2.mp3
file size: 369 kb.


3.
delay time is controlled by an a149/1.
feedback is inverted.

http://www.selfoscillate.de/a100files/a188-1-256-rnd1.mp3
file size: 568 kb.


4.
a slow triangle wave from an a147 lfo modulates the delay time.
a110 waveform is sawtooth.

http://www.selfoscillate.de/a100files/a188-1-256-lfo1.mp3
file size: 475 kb.

http://www.selfoscillate.de/a100files/a188-1-512-lfo1.mp3
file size: 389 kb.


5.
in this example the delay time is set to maximum, no
delay time modulation takes place. the bbd output
is filtered with an 48db lowpass filter (a108).
the a108 cutoff is modulated by the same pitch cv as the a110
(in other words: keytracking). a110 waveform is triangle.
you hear the 48db output of the a108.

http://www.selfoscillate.de/a100files/a188-1-512-filtered1.mp3
file size: 502 kb.


part 2:

now a basic karplus-strong-patch.
the simplified audio path is: noise -> vca -> bbd -> out

the noise is coming from an a117.
the vca is an a131, controlled by an a143/2 adsr envelope.
the pitch cv from the above examples now modulates the delay time.

6.
the a143/2 is set to the shortest envelope possible.
during recording the attack time is set from zero to 5,
then the decay time is also set from zero to 5.
after that the attack time is set back from 5 to zero,
and finally also the decay time is set back from 5 to zero.

http://www.selfoscillate.de/a100files/a188-1-256-karplus1.mp3
file size: 912 kb.

http://www.selfoscillate.de/a100files/a188-1-512-karplus1.mp3
file size: 829 kb.


7.
same as abobe, but with inverted feedback.

http://www.selfoscillate.de/a100files/a188-1-256-karplus2.mp3
file size: 809 kb.

http://www.selfoscillate.de/a100files/a188-1-512-karplus2.mp3
file size: 831 kb.


best wishes

ingo








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